Steel Coil · SAE 1006
SAE 1006 Steel Coil — A Chemistry Range, Not a Coil Specification
SAE 1006 fixes what the steel is made of. It does not fix what you will receive. The gauge, the rolled condition, the edge, the coil mass and the test basis all sit outside the four-digit number — and those are the terms the coil is actually accepted against when it lands on your line.
Price on request · Rolled condition and test basis agreed before quoting
Is This Your Route?
You have been handed a chemistry designation and asked to buy coil
This page is for the buyer or process engineer who already knows the steel they need is a low-carbon grade, and who now has to turn a four-digit number into a coil order that a mill can roll and your works can accept.
The four-digit SAE carbon-steel system is a composition-based naming convention. In the 10xx series the final two digits describe carbon content in hundredths of a percent, and the leading digits place the steel in the plain-carbon family. A designation in that series is a statement about what is in the steel.
That is genuinely useful — but notice what it is silent about. Nothing in the number tells a mill how thick to roll the coil, whether it is to be delivered hot-rolled or cold-reduced, what edge condition to produce, what coil mass to wind, or which tests to run before it is released. An enquiry reading "SAE 1006 coil, quote please" has specified the material and left the entire product undefined.
The practical consequence is that two suppliers can both ship material that genuinely meets the chemistry and still send you coils that behave differently — because each one filled in those missing fields with its own default. The buyer who writes those defaults down first is the buyer who gets a coil that matches the line it is going on.
What this page will not do
- It publishes no chemistry range, no tensile figure and no elongation value. Those numbers belong to the governing standard's current edition, and this page does not restate them from memory.
- It does not present a chemistry designation as interchangeable with a delivery-standard designation. Where both exist, both belong on the order.
- It does not promise a ductility or drawability result. How far a given heat forms is established by the mill's testing against the specified basis, not by the designation on its own.
This is your route if…
- You are buying low-carbon coil as feedstock for wire drawing, tube forming, roll forming or light presswork.
- Your requirement arrived as a chemistry designation from a drawing, a parent specification or a customer instruction.
- You need the order to carry terms the designation does not contain — gauge, rolled condition, edge and coil mass.
- You need to state the inspection basis up front, because the receiving inspection will be run against it.
Look elsewhere if…
- The decision is really about corrosion resistance rather than chemistry, which is a coating question before it is a composition one. Compare the full coil grade set
- You need cut-to-length flat product rather than a coil to feed a forming line. See the steel sheet range
- The requirement is heavy-gauge plate for a fabricated structure rather than light-gauge forming stock. See the steel plate range
Chemistry vs Delivery
Two specification layers, and only one of them is in the number
A chemistry designation and a delivery standard answer different questions. This grid separates them, then checks whether the combination you have chosen holds together. It returns no chemistry range and no mechanical value.
Close the delivery layer before you quote
Three fields the chemistry designation cannot supply. Each one changes the coil you receive even when the analysis is correct.
This checks whether the delivery fields are named. It does not calculate a chemistry range or a mechanical value, and it makes no judgement about whether the material suits your part — that is what testing against a named basis establishes.
Delivery-layer check
Choose the rolled condition, the test basis and the edge condition your order will carry. The check reports which of them are still open, and why each one matters to the coil you receive.
Nothing here is a specification against a standard. It is a check that the terms your receiving inspection will be run against have actually been written down.
Why the two layers are written separately
The chemistry layer says what the steel is made of. The delivery layer says what shape it arrives in and what has been done to it — the rolling route, the condition, the tolerances and the testing. A single order line normally carries both, which is exactly why they get read as one statement. They are not. A chemistry range that is entirely correct can still be delivered in a rolled condition your press cannot use, and a delivery condition that suits your line can still be paired with a chemistry your application does not call for.
Substitution Limits
Four swaps that read as equivalent and are not
Each of these is a move someone makes to keep an order moving — usually on the paperwork, usually under time pressure. Each one changes the requirement rather than the wording of it.
The designation is treated as the whole specification
A chemistry designation is quoted, and the remaining fields — gauge, condition, edge, coil mass, test basis — are left to the supplier because they are assumed to follow from it. Nothing follows from it.
Boundary: the order is only as complete as the least-specified field on it. A chemistry designation does not imply a delivery standard.
One rolled condition is swapped for another
Hot-rolled and cold-reduced are not two ways of producing the same product. The rolling route changes surface, thickness tolerance behaviour and the condition the material is in when it reaches a forming line.
Boundary: the rolled condition is a requirement in its own right. Swapping it changes the product, not just the process.
A chemistry-only certificate is taken as proof of forming behaviour
A certificate showing analysis conforms does not evidence how the coil forms. Forming behaviour is established by mechanical testing against the named basis — a different test, and a separate line on the order.
Boundary: analysis and forming tests answer different questions. Neither substitutes for the other on a receiving inspection.
A supplier default is accepted as the requirement
Where a field is left open, the mill fills it with whatever is standard for that product line. That default may be perfectly good material — but it was chosen for production economics, not for your press.
Boundary: an unstated field is not neutral. Leaving it open is a decision, made by someone who has not seen your part.
The common thread in all four is that a designation gets treated as though it were a specification. A designation names one property or one family. A specification names everything the coil has to satisfy before it is accepted — and only the second one can be inspected against.
Writing the Order
The fields an enquiry has to carry before it can be quoted
These are the terms a mill needs and a receiving inspection checks. Anything left out is filled in by default — and a default supplied in place of a requirement is a mismatch discovered after the coil has been cut.
| Order field | Why it has to be on the enquiry |
|---|---|
| Chemistry designation and its source | Name the designation and the document it came from, so the supplier reads it the same way your drawing did. |
| Delivery standard and edition | If a product or delivery standard is invoked, state it with the edition. A designation read against one edition is not automatically the same requirement under another. |
| Thickness and width, with tolerances | Nominal dimensions alone do not define acceptance. The tolerance class is what receiving inspection measures against. |
| Rolled condition | Hot-rolled, pickled or cold-reduced changes the surface, the tolerance behaviour and the forming characteristics you will work with. |
| Edge condition | Mill edge and slit edge present differently at the entry to a line and affect how the strip tracks. |
| Coil mass and geometry | Inner diameter, outer diameter and mass range determine whether the coil can be loaded on your decoiler as supplied. |
| Quantity and destination | Quantity drives the production route, and the destination determines the documentation and handling the shipment needs. |
| Tests and documents required | State the test basis and the certificate type up front, so the evidence matches what your inspection will require. |
Inspection and documents
- State the test basis on the order — analysis, mechanical tests, or both — rather than accepting whichever the supplier routinely issues.
- Confirm the standard and edition the certificate will cite, and that it matches the one your order or project invokes.
- Check that the certificate covers the heat or lot actually shipped to you, not a representative heat from the campaign.
- Decide at enquiry stage which documents you need, so they are produced alongside the material rather than recovered afterwards.
- Keep a record of what was not tested. A certificate is silent about the absence of a test.
What an inspection certificate does and does not tell you
A certificate records results obtained against a stated basis. It does not tell you that the basis was the one your project requires, and it does not tell you what was not tested. Before you release material on the strength of it, confirm the standard and edition cited and the heat or lot it covers.
GCC Supply
Moving a chemistry-specified coil into the Gulf
A low-carbon coil adds one planning constraint a heavy product does not have: the surface and the coil geometry have to survive a sea transit and still suit the line they were bought for. Handling and documentation form part of the order, not an afterthought to it.
United Arab Emirates
Local and re-export enquiries, where the receiving works will measure the coil against the delivery terms rather than the chemistry alone.
Steel coil supply for United Arab Emirates
Saudi Arabia
Programme volumes where the rolled condition and the documentation set are reviewed before material is released to the forming line.
Steel coil supply for Saudi Arabia
Qatar
Project-driven demand where the specification and its supporting documents are prepared in step rather than assembled afterwards.
Steel coil supply for Qatar
Oman
Port-oriented supply where coil geometry and surface protection are harmonised to the industrial application and the route in.
Steel coil supply for Oman
Bahrain
Industrial supply where an accurate document set matters as much as the material, because the receiving inspection runs against it.
Steel coil supply for Bahrain
Kuwait
Contractor supply linking the coil to the drawing or roll-former it feeds, so condition and tolerance are fixed at enquiry stage.
Steel coil supply for KuwaitThese pages set out the supply route and the enquiry handling for each destination. They do not claim local warehousing, stockholding, a branch presence or a delivery timescale — those are confirmed against your own order. The reason the coil geometry matters here is specific: a coil that cannot be loaded on the decoiler at the receiving works has not met its specification, even where every dimensional tolerance is correct.
Reference Notes
What the designation does cover, and where it stops
Read as a scope statement rather than a specification, the designation is accurate and useful. The difficulty only begins when it is read as more than it is.
The designation describes composition, not delivery
A chemistry designation in the four-digit system identifies a steel by what it contains. It is a naming convention shared across the industry, which is exactly why it is useful — and exactly why it cannot carry the delivery terms as well.
The product you receive is defined by the delivery terms
Thickness and width with tolerances, rolled condition, edge, coil mass and surface condition are what determine whether the coil suits your process. None of them are implied by the chemistry.
Testing follows the basis your order names
Chemical analysis and mechanical testing are separate examinations answering separate questions. Which one — or which combination — is run is a decision made on the order, not a consequence of the designation.
Editions change, and the edition is part of the requirement
Where a standard is invoked, the edition it is read against is part of what was ordered. Two parties citing the same number without agreeing the edition can disagree about conformance without either being wrong.
This page deliberately does not reproduce chemistry ranges, tensile values or elongation figures. Those belong to the current edition of the governing standard, and a number copied onto a marketing page is a number nobody is accountable for. Take them from the standard edition your order invokes.
Where each question belongs
Chemistry designation
What the steel is made of. Settled by the designation and evidenced by analysis.
Delivery standard and edition
The product requirements the coil must meet. Settled by the standard, not the chemistry.
Dimensions and tolerances
Whether the coil fits the line. Settled by the tolerance class on the order.
Rolled condition and edge
How the material presents and tracks. Settled by the route and the edge specified.
Test basis
What evidence you receive. Settled by the tests named, not the designation.
FAQ
Questions the designation does not settle
Does naming SAE 1006 on an enquiry fully describe the coil I will receive?
No. The designation fixes a chemistry range. Thickness, width, rolled condition, edge condition, coil mass and the inspection basis are separate terms, and each one changes what arrives even when the chemistry is correct.
Should the enquiry say 'SAE 1006' or something else?
Say both: the chemistry designation you were given, and the delivery terms the coil has to meet. If your drawing or parent specification quotes a different designation, send that as well rather than converting it yourself — the conversion is a decision, not a translation.
Can I order the coil without stating a rolled condition?
You can, but the supplier then selects one. That selection will be driven by what is economic to produce rather than by your forming operation, which is the opposite of how the condition should be chosen.
Is a mill test certificate enough evidence on its own?
A certificate is evidence of what was tested, against the basis it was tested to. Before you rely on it, confirm that the basis matches the one your order or project requires, and that the certificate covers the heat or lot you were actually shipped.
What should be carried into the quotation request?
The chemistry designation with its source standard, the delivery standard and edition if one is invoked, thickness and width with tolerances, rolled condition, edge, coil mass range, quantity, destination and the tests or documents you will need.
Where It Is Used
Applications where the chemistry is the starting point
In each of these the buyer begins from a composition requirement and then has to decide the delivery terms. That order of decisions is what this page exists to support.
Wire and wire-product feedstock
Coil bought as the input to drawing and downstream wire operations, where a composition requirement arrives first and the delivery terms are set to suit the drawing line.
Tube and section forming
Coil fed to a forming line producing tube or open sections, where gauge tolerance and edge condition affect how the strip tracks and welds.
Roll-formed profiles
Coil for continuous roll forming, where the coil geometry and the consistency of the strip determine whether the line can run without re-setting.
Light presswork and drawn parts
Applications where a low-carbon composition is the starting requirement and the forming operation then decides what the delivery terms have to be.
General fabrication stock
Coil held as general forming stock against a composition requirement, where the buyer needs the delivery terms fixed so the material is usable across more than one job.
Re-export and trading
Coil bought against a chemical designation for onward supply, where the documentation set and the stated delivery terms have to stand up to a third party's inspection.
Where the order leads next
Steel sheet
Cut-to-length flat product, where the coil has already been decoiled and cut rather than supplied to your forming line.
See steel sheetSteel plate
Heavy-gauge plate for fabricated structures, where the requirement is load-bearing rather than light-gauge forming stock.
See steel plateSteel coil grades
The full set of designations, if the open question is which grade rather than how the delivery terms are written.
Compare coil gradesRequest a Quote
Send the chemistry designation with the document it came from, any delivery standard and edition you are invoking, the thickness and width with tolerances, the rolled condition, the edge, the coil geometry, the quantity, the destination and the test basis. Or send it with those fields still open and say so. Price is on request.
Enquiries on this route are handled through the steel coil desk — the main steel coil enquiry desk. The form here reaches the same team.
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