ASTM A706 Grade 80 Rebar
A706 Grade 80: Two Questions, One Bar
A706 Grade 80 asks two separate questions, and they are answered by different people. The first is a material question: is this grade available in the bar size your design uses, in the edition your project is bound to, with the chemistry and mechanical evidence the specification requires? The second is an approval question: does your adopted design code permit this grade for these members, and what does it demand of detailing, splicing and welding at this strength? Passing the first does not answer the second. The A706 grade name is not an approval, it is not a substitute for A615 Grade 80, and no bar designation on its own qualifies a structure.
Before this grade is released
- Material availability and design approval are separate questions.
- A706 and A615 Grade 80 are not interchangeable.
- Chemistry and mechanical results must tie to the supplied heat.
Information current as of
Two Approvals, Two Owners
A supplier confirms the bar exists. Your design authority confirms you may use it.
Where A706 Grade 80 goes wrong is not usually a material defect — it is a process gap. Someone confirms the grade can be supplied, treats that as sign-off, and the code-permission question is never formally closed. The options below are grouped by which question they answer and who owns it. None of them is a strength comparison, and the two comparisons offered are specifications, not alternatives.
ASTM A706 Grade 80 rebar
Current specificationChoose it when
When the design depends on A706's controlled chemistry, ductility and tensile-to-yield framework, and your adopted code permits the grade for these members at the size your detailing uses.
Before you commit
Two separate confirmations: that the size is carried at this grade in your edition, and that the design code permits it for the member. Neither is implied by the grade name.
ASTM A615 Grade 80 rebar
Same strength, different specificationChoose it when
Where the design specifies carbon-steel bar to A615 at the higher strength and does not rely on A706's controlled chemistry or ductility provisions.
Before you commit
Not an automatic swap in either direction. A shared strength label is not a shared chemistry, ductility or welding framework, and the detailing basis changes with the specification.
ASTM A706 rebar (standard overview)
The specification routeChoose it when
Orient the Grade 80 decision inside the A706 specification itself — its chemistry framework and how it differs from carbon-steel bar.
Before you commit
The overview is orientation, not acceptance. Your project's edition and adopted design code still decide what may be supplied and how it may be detailed.
Compare this specificationASTM steel grades
Cross-product taxonomyChoose it when
Compare this grade decision against the wider ASTM grade reference before assessing designations across product families.
Before you commit
The reference is orientation, not acceptance, and it does not establish that any grade is suitable for a structure.
Compare this specificationQuestion one — material scope
Is this bar available, in my size, to my specification?
- Does the edition your project is bound to carry Grade 80?
- Is your bar size within the set carried at this grade?
- Will chemistry and mechanical evidence be issued per heat?
Answered by: the supplier, at quotation and on test.
Question two — design approval
Does my code permit this grade here, and what does it require?
- Does your adopted code permit the grade for these members?
- What ductility and detailing provisions does it attach?
- What splice, lap and welding rules apply at this strength?
Answered by: your design authority, before fabrication.
The qualification rule
Do not let a supply confirmation close a design question. Treat availability, size and test evidence as one track and code permission, detailing and welding as another, and keep them on separate sign-offs. A706 Grade 80 and A615 Grade 80 are different specifications and are not interchangeable — a swap changes the chemistry control and ductility framework your detailing may be relying on. No bar designation on its own qualifies a structure.
High-Strength A706 Qualification Checklist
Close the material scope, then close the detailing approval
This checklist runs the two questions in order and refuses to merge them. It holds at 'verify first' until the bar size is stated — because a size not carried at this grade stops the assessment — and it will not clear until you have named the design-code basis the grade's use rests on. Selecting an A615 edition against this specification returns a conflict.
Material scope & approval inputs
Required fields marked *Use the edition the project or purchase specification requires.
Confirm the size is carried at this grade in your edition.
Commit to one ordered system per lot; label any conversion informational.
State the design authority's position — the checklist will not clear on material scope alone.
Required test / document evidence
Nominal mass refers to the base bar and is either supplied by you or confirmed against the governing standard and the supplied MTC. This checklist does not estimate weight, does not qualify a weld, does not provide lap lengths, and does not approve the grade for any member.
Qualification status
Add the governing A706 edition
The grade is set; the edition determines whether Grade 80 is carried, which bar sizes are permitted, and the chemistry and mechanical framework that applies. State the edition the project specifies.
Approval items still open
- Whether your adopted design code permits this grade for the members in question.
- The ductility and detailing provisions the code attaches to using it at this strength.
- The splice, lap and anchorage rules that apply at this grade.
- Whether welded splices are intended, and the procedure and qualification required.
- The inspection and testing hold points the project imposes on the supplied lot.
Boundaries of this assessment
- Two approvals are needed and neither substitutes for the other: material availability and conformity, and design-code permission for the member. A supplier can confirm the first only.
- A706 Grade 80 is not an automatic swap for A615 Grade 80. Different specifications, different chemistry control, different ductility and welding provisions.
- The A706 grade name is not a seismic or high-strength-use approval — your adopted design code determines whether the grade may be used, and where.
- A706's controlled chemistry supports welding, but the procedure, filler class and qualification remain separate requirements that must be specified.
- High-strength grades are typically carried in a restricted size set, and the edition in force determines which — confirm before detailing is finalised.
Nothing is transmitted yet, and this checklist does not approve the grade for your structure. When the design authority's position is on record, send the summary to the commercial department for a confirmed quotation.
Specification, Grade & Detailing
What the specification fixes, and what your code still has to permit
The A706 specification fixes the chemistry framework, the mechanical requirements and the grades and sizes it carries. It does not tell you whether your code allows this grade in your member, what the detailing provisions are at this strength, or whether a weld is qualified. Read the tables in that order — it is the order the decisions bind.
Specification identity
Which specification governs — and which similar-looking one does not
| Standard / grade | Applicability & limitation | What it means for your assessment | Enquiry field / next action |
|---|---|---|---|
| ASTM A706/A706M Grade 80 | A low-alloy reinforcing-bar specification with controlled chemistry, restricted carbon equivalent and a mechanical framework including a tensile-to-yield relationship, carried in its own grade and size set. | Material scope can be assessed from the edition. Design permission cannot. | State edition, grade and permitted size. |
| ASTM A615/A615M Grade 80 | A carbon-steel specification at a comparable strength label, with its own chemistry and mechanical framework and no controlled ductility provisions of the A706 kind. | Not a swap. Moving between specifications changes the basis for any detailing that relied on A706's controlled properties. | Confirm the governing specification in writing. |
| ASTM A706 at another grade | The specification carries more than one grade designation, each with its own requirement in the edition in force. | A different grade number is a different requirement and reopens the mechanical and detailing assessment. | State the exact grade specified. |
| Non-ASTM national grades | Strength and ductility labels in other national standards describe different frameworks and test regimes. | A similar label carries no chemistry, ductility or welding equivalence and does not establish splice behaviour. | State the governing standard and grade. |
The table states specification scope from public standard information. Confirm the exact edition, the grades and sizes it carries, and its requirements against the current standard documents before specifying — no unsupported numeric values are published here.
Detailing approval
The items only your design authority can close
| Approval item | Applicability & limitation | What it means for your assessment | Owner / status |
|---|---|---|---|
| Code permission for the grade | Determined by the structural code your project adopted and the member in question — never conferred by the bar designation or a quotation. | This is the item most often left unclosed because a supply confirmation felt like approval. Record it separately. | Design authority — before fabrication. |
| Ductility & detailing provisions | Follow from the adopted code and the member; they act on the bar choice rather than sitting apart from it. | Confirm what the code requires at this grade, and that your detailing applies it. | Design authority — on record. |
| Splice, lap & anchorage rules | Calculated for the grade, size, concrete and confinement in your structure, not taken from a generic table. | Because these are size-dependent, a late size change reopens them. Fix the size early. | Designer + detailer. |
| Welding procedure & qualification | A706's controlled chemistry makes welding practical, but the procedure specification, filler class and welder qualification are separate requirements. | State the procedure required so qualification can be checked at submittal, not after fabrication. | Designer + fabricator. |
| Inspection & testing hold points | Set by the project's QA plan and the authority having jurisdiction, in addition to the specification's own requirements. | Agree what is witnessed, what is reviewed on paper, and what triggers a hold. | QA + buyer. |
No lap length, bend diameter, carbon-equivalent limit or mechanical value is published on this page. Each depends on your grade, size, concrete, code basis and edition, and belongs with your design authority and the current standard.
Bounded comparison
The adjacent routes worth opening before you commit
Each route answers a specific neighbouring question — the A706 specification itself, the carbon-steel standard, and the detailing references your schedule depends on. None of them is interchangeable with your requirement unless the design authority approves the change.
The A706 specification
Open referenceASTM A615 — the carbon-steel route
Open referenceBend diameter guidance
Open referenceLap length guidance
Open referenceComparison is bounded to the stated specification, grade and size basis. A shared strength label does not make A615 and A706 Grade 80 equivalents, and neither substitutes for the other without approval.
Where it matters
The taller and more congested the frame, the more the approval question costs to get wrong
High-rise cores and transfer zones are where high-strength reinforcement is most tempting and where the constraints bite hardest. Splice zones are congested, laps are long, and the code provisions attached to using a high grade in a heavily loaded member are exactly what determines whether the detailing closes. If the code-permission question is answered late — after schedules are issued — the cost is not a re-typed bar mark; it is re-detailed laps across a frame. Close it in design. The imagery here illustrates the application setting; it is not a statement about any project's design basis.
Test Documentation & Verification
What makes one quote for this grade objectively comparable
At a high-strength low-alloy grade the documentation carries the assessment. State the same document set to every source, keep what the specification requires separate from what the delivered heat achieved, and define what receipt inspection actually checks.
| Evidence / document | What it verifies | When it is required | Enquiry action |
|---|---|---|---|
| Mill Test Certificate (MTC / EN 10204 3.1) | Identity, chemistry and mechanical results for the heat that produced the bar lot. | Where the project requires certified material — effectively always where a design relies on controlled properties. | Request at enquiry; content confirmed against the delivered lot. |
| Chemistry & carbon-equivalent information | The chemistry of the supplied heat against the specification's restricted limits. | Where the design or the welding procedure depends on chemistry being within controlled limits. | Request chemistry and carbon equivalent per heat. |
| Tensile, yield & elongation results | The measured mechanical performance of the heat, including the relationship the specification controls. | Where the assessment leans on ductility or the tensile-to-yield relationship rather than strength alone. | Request results tied to the heat. |
| Bend / rebend results | Bend acceptance of the lot at the diameters the detailing uses. | Where the detailing approaches the minimum bend diameter or the project requires bend evidence. | Request results at the scheduled diameters. |
| Welding procedure & qualification records | That welded splices have a specified procedure, filler class and qualified welders behind them. | Where the design relies on welded splices rather than standard laps or couplers. | Provide from the fabricator; accompanies the material certificate. |
| Marking & bundle traceability records | Bar size, grade and heat marking, and the tags connecting bundles to their records. | For dimensional checks, schedule control and site traceability. | Confirm marking and traceability requirements. |
Specification vs supplied heat
The specification sets the requirement; the mill certificate evidences the delivered heat. Where an assessment leans on controlled properties, the second is what it rests on.
Issued on test
Certificates and test records are issued against the actual delivered lot — they cannot be asserted in advance of it.
Two sign-off tracks
Material conformity and design approval are evidenced by different parties. Keep them on separate records so neither is mistaken for the other.
Rebar bend diameter guide
Resolve the minimum bend diameter question for a high-strength bar before the detailing is scheduled for fabrication.
Open referenceRebar lap length guide
Work through how lap and splice length is arrived at for your grade, size and code basis — and why it is not a fixed value.
Open referenceRebar weight reference
Check unit mass for the bar size once the size is confirmed, for schedule and shipment planning.
Open referenceWhere This Grade Gets Assessed
The applications where the approval question is most expensive to answer late
These are the settings where an A706 Grade 80 route is most often considered, and where the code-permission and detailing provisions matter most — congested high-rise frames, dynamically loaded bridges, and precast elements with controlled lifting design. Each states the limit that still has to be confirmed.
Rebar for high rise buildings
Where it bites
High-rise cores and columns combine high axial demand with congested splice zones, which is exactly where a code's restrictions on high-strength reinforcement and its splice rules bite hardest.
Fit limit
The structural system, code basis and splice strategy come from the design; this page does not certify a bar for a given frame.
Open applicationBridge rebar
Where it bites
Bridges add dynamic loading and heavy continuity demand, so ductility and splice provisions interact with the grade rather than sitting apart from it.
Fit limit
The bridge's governing design code and exposure class are confirmed from the project and assessed against it.
Open applicationPrecast concrete rebar
Where it bites
Precast adds controlled casting, form-release and lifting stresses — conditions where the permitted detailing and bend limits at a high strength become fabrication constraints.
Fit limit
The precast element type and its lifting design are confirmed against the project; the grade does not override them.
Open applicationApplication fit is confirmed against the governing specification, the permitted bar size, and the design code in force when the enquiry is quoted. No generic or unsupported suitability claims are made on this page.
GCC Availability & Destination Planning
Plan the destination, documents and delivery basis for an A706 Grade 80 enquiry
For each GCC destination the specification, documents and commercial terms are aligned to your project basis at quotation. Availability of a restricted-size high-strength grade is confirmed from your complete specification — never claimed in advance.
United Arab Emirates
Technical submittal and availability enquiry.
Add the delivery location, importer/customs inputs, Incoterm and document set before the A706 Grade 80 enquiry is issued.
Saudi Arabia
Large EPC quantities and cross-border documentation.
Confirm the delivery location, importer inputs, Incoterm and documents so a restricted-size high-strength enquiry is quoted on one consistent basis.
Qatar
Infrastructure technical-approval readiness.
Add the technical submittal and document package the project requires for a controlled-chemistry high-strength bar.
Kuwait
Contractor and fabricator hand-off.
State the delivery location, Incoterm, documents and required date so the order can be planned against the specification basis.
Bahrain
Contractor procurement and industrial supply.
Provide destination, importer/customs inputs, Incoterm and documents before quotation of the A706 Grade 80 rebar.
Oman
Port-oriented project supply planning.
Confirm the destination, required documents and Incoterm so the quotation basis is fixed for the specified grade.
Destination, documents, port or delivery line, Incoterm and the required delivery date are fixed at quotation from your specification. No served markets, local stock, local branches or delivery times are claimed in advance.
Commercial & Availability Inputs
What turns an A706 Grade 80 enquiry into a confirmed offer
Availability, packing, documents, Incoterm and delivery are agreed from your full specification. Price is always on request — no live stock, lead-time or pricing claims are made before quotation.
| Quotation input | What it fixes | Status |
|---|---|---|
| Governing edition & grade | Which A706/A706M edition and which grade designation the offer is made against. | Required before quotation. |
| Bar size & availability check | The nominal size and confirmation that it is carried at this grade in the edition. | Required before quotation. |
| Design-code approval basis | The design authority's position on using the grade for these members. | Required before the enquiry is issued. |
| Welding requirement | Whether welded splices are used, and the procedure and qualification required. | Required where welding applies. |
| Quantity & unit | Total tonnes or bar count for the schedule. | Required for quotation. |
| Packing & bundle marking | Bundled, strapped and tagged with size, grade and heat marking. | Confirmed from the order. |
| Inspection & documents | The MTC plus chemistry, carbon-equivalent, mechanical and marking records required. | Fixed at quotation per the standard and service. |
| Availability (stock / mill) | Whether the enquiry is met from current availability or scheduled production — a material question at a restricted-size grade. | Confirmed at quotation — never claimed in advance. |
| Incoterm & named place/port | The commercial and delivery basis for the consignment. | Fixed with the destination. |
| Required date | The delivery window the programme depends on. | Confirmed against availability. |
Price, stock, lead time, mill/origin and routing are quotation-dependent unless current verified evidence is present.
Commercial department
The commercial desk checks each A706 Grade 80 enquiry for edition and grade consistency, confirmation that the bar size is carried at this grade, the design-code approval basis, the welding requirement where it applies, the required document set and the delivery basis before quoting. Continue to the exporter route when packing, named place, Incoterm, export-document and shipment-planning fields are needed.
Steel rebar exporterOffice 3303, Churchill Executive Tower, Business Bay, Dubai, United Arab Emirates
Monday – Saturday: 8.00 AM – 6.00 PM · Sunday: Closed
Verifiable Outcomes
What each concern is checked against, and what you can rely on
Each risk on this page is mapped to the check that actually addresses it, then to a practical outcome. No superiority claims and no structural-suitability claims are made.
| Buyer concern | Check on this page | Outcome you can rely on |
|---|---|---|
| Treating material availability as design approval | The checklist runs the two questions as separate steps and will not clear on the material side alone. | The code-permission question is closed by the design authority, not assumed from a supply confirmation. |
| Swapping A615 Grade 80 for A706 Grade 80 | Selecting an A615 edition against this specification returns a conflict with the specification difference set out. | The substitution is caught at assessment stage rather than at inspection. |
| Detailing a size that is not carried at this grade | The permitted bar size is treated as an availability field, and the checklist holds until one is supplied. | A size that cannot be sourced is found before the detailing is frozen. |
| Assuming controlled chemistry qualifies a weld | The checklist separates the specification's welding provisions from the procedure, filler and qualification the design still requires. | Weld qualification is treated as its own record alongside the material certificate. |
| Accepting chemistry and ductility from the designation | The evidence matrix requires results tied to the supplied heat, separate from the specification's requirement. | Conformity is demonstrated on the delivered lot rather than inferred. |
| Missing equipment to verify what is delivered | The evidence matrix states what each record proves and what has to be checked against the actual consignment. | Receipt inspection has a defined check rather than a signature. |
From assessment to delivery
- 1
Separate the two questions
Establish that this is a material-availability question and a design-approval question, and that they are answered by different parties.
- Owner:
- QA + design team
- Input:
- Design intent and governing standard
- Output:
- Two tracked questions
- Risk:
- Supply confirmation read as design approval
Next: Confirm the edition carries the grade
- 2
Confirm the edition carries the grade and size
Check that the A706/A706M edition your project is bound to carries Grade 80, and in the bar size the detailing uses.
- Owner:
- Buyer + designer
- Input:
- Edition, bar size/designation
- Output:
- Availability position fixed
- Risk:
- Size not carried at this grade
Next: Obtain the code's permission position
- 3
Obtain the design code's permission
Confirm whether the adopted code permits this grade for these members and what ductility and detailing provisions it attaches.
- Owner:
- Design authority
- Input:
- Adopted code, member type
- Output:
- Permission and provisions on record
- Risk:
- Grade assumed permitted by default
Next: Apply the splice and anchorage rules
- 4
Apply splice, lap and anchorage rules
Detail the laps, splices and anchorage to the code's provisions for this grade, size and concrete — not from a generic table.
- Owner:
- Designer + detailer
- Input:
- Layout, bar size, congestion
- Output:
- Compliant detailing
- Risk:
- Lap lengths assumed rather than calculated
Next: Resolve welding and qualification
- 5
Resolve welding requirement and qualification
State whether welded splices are used and what procedure, filler class and qualification the design requires.
- Owner:
- Designer + fabricator
- Input:
- Splice type, welding procedure
- Output:
- Welding requirement and records
- Risk:
- Chemistry read as weld qualification
Next: Define the test documentation set
- 6
Define the test documentation set
Specify the chemistry, mechanical, bend and marking records required against the supplied heat, in the ordered unit system.
- Owner:
- QA + buyer
- Input:
- Required documents and tests
- Output:
- Per-lot evidence set
- Risk:
- Designation substituted for results
Next: Fix destination and delivery basis
- 7
Fix destination, dispatch evidence and date
Confirm the delivery location, Incoterm, document release and required date so the enquiry is complete and comparable.
- Owner:
- Buyer + commercial
- Input:
- Destination, Incoterm, date
- Output:
- Qualified enquiry ready to issue
- Risk:
- Unstated evidence or port
Next: Issue the qualified RFQ
Technical reference note
Which authoritative requirement most changes an A706 Grade 80 assessment
A source-backed note on the requirement this page is built around — stated with its source, its checked date and its limits.
The requirement that changes the assessment
The governing fact for this page is that the A706 specification controls material properties, and only material properties. ASTM A706/A706M sets chemistry within restricted limits, places a limit on carbon equivalent, and frames its mechanical requirements around a tensile-to-yield relationship rather than a strength figure alone. Each of those is a property of the bar, evidenced per heat on the mill certificate, and each is why designers choose this specification when detailing depends on predictable ductile and splice behaviour.
None of them, however, constitutes permission to use the bar. Whether a high-strength grade may be used in a given member, what detailing provisions attach to that decision, and what a splice or anchorage has to satisfy — those come from the structural code the project adopted, applied to the specific structure. This is why the material question and the approval question must be signed off separately: a supplier can close the first completely and still leave the second entirely open. Where the design depends on welded splices, the procedure and qualification are a third record again, sitting alongside the material certificate rather than being evidenced by it.
Primary authority
ASTM International — ASTM A706/A706M, Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement — store.astm.org/a0706_a0706m-23.html
Checked · confirm the current active edition and the grades it carries on the publisher's site
What this note does and does not cover
Covers: the A706 specification's scope, its controlled-chemistry and mechanical framework, and the separation between the material specification and the project's adopted design code.
Does not cover: your adopted structural code, whether it permits this grade for your members, or national standards outside ASTM — each is a separate authority you must consult directly.
Limit: the public ASTM page is a scope and abstract reference, not a substitute for the purchased full standard. Nothing here approves the grade for a member, qualifies a weld, or supplies a lap length.
Practical consequence: confirm the edition and the size it carries against the specification, obtain the code's permission position from your design authority, and require chemistry and mechanical evidence tied to the supplied heat before acceptance.
FAQ
The questions a QA or design team asks before releasing this grade
Written for the assessment that has to be closed before fabrication, not after.
Can A706 Grade 80 be swapped for A615 Grade 80?
No, not as an automatic substitution. They share a strength label but are different specifications with different chemistry control, ductility frameworks and welding provisions. If your detailing depends on A706's controlled properties, moving to A615 removes the basis for it. Any substitution needs the structural designer to confirm the governing specification and approve the change.
Does confirming the bar is available also confirm it is approved for my structure?
No — those are two separate questions. A supplier can confirm the material scope: that the grade is carried in your edition, at your bar size, with the required chemistry and test evidence. Whether the grade may be used for a given member, and under what detailing provisions, is determined by your adopted design code and is your design authority's decision. A quotation is not an approval.
What should the test documentation include for this grade?
At minimum the mill test certificate covering the supplied heat, with the chemistry and carbon-equivalent information and the tensile, yield and elongation results your project requires, tied to the actual lot and stated in the ordered unit system. Where welded splices are used, the welding procedure and qualification records sit alongside this rather than being replaced by it.
Does A706's chemistry mean welded splices need no further qualification?
No. The controlled chemistry is what makes welding a practical route, but the welding procedure specification, filler class, joint detail and welder qualification are requirements in their own right. Treat welding as its own specification field and state the procedure you require, so the qualification can be checked at submittal stage rather than questioned after fabrication.
Why does the bar size matter so much at this grade?
Because a high-strength grade is typically carried in a restricted size set rather than the full range, and the edition your project is bound to determines which sizes apply. If the detailing is built around a size that is not available at this grade, the schedule has to change — and because lap and anchorage provisions are size-dependent, that reopens detailing rather than being a simple substitution.
How do I make two quotes for this grade objectively comparable?
Require the same edition, grade designation, bar size and unit system from every source, and specify the document set identically — mill certificate, chemistry and carbon-equivalent information, mechanical results and marking records, all tied to the supplied heat. Ask each to state any deviation from the specified edition or size in writing, and treat availability, lead time and origin as quotation-dependent until confirmed rather than assumed comparable.
Qualified RFQ
Request a quote for ASTM A706 Grade 80 Rebar
Copy the RFQ summary you have built, then send it to the commercial department. The enquiry is ready for review once the edition, grade, permitted bar size, ordered unit system, design-code approval basis, quantity, destination and required evidence are complete.
Price, stock, origin and lead time remain quotation-dependent unless current verified evidence is present. A quotation is not an approval to use this grade in your structure.
Office 3303, Churchill Executive Tower, Business Bay, Dubai, United Arab Emirates
Monday – Saturday: 8.00 AM – 6.00 PM · Sunday: Closed
Copyable RFQ summary
- Standard / edition
- To be confirmed
- Grade
- Grade 80
- Bar size / designation
- To be confirmed
- Ordered unit system
- To be confirmed
- Design-code approval
- Not stated
- Quantity
- To be confirmed
- Destination
- To be confirmed
- Nominal mass (kg/m)
- Confirm per standard / MTC
Add any remaining open items — the code permission position, splice and anchorage provisions, welding qualification, availability, price, origin or lead time — as explicit fields before sending.