St3sp · Q235B · DC01 · 0.5–6 mm · width 20–630 · GOST 6009
Slit strip
Strip slit lengthwise from coil, 20–630 mm wide and 0.5–6 mm thick, for electric-welded tube, profiles and banding
201 · 304 · 316L · 2B · BA · 0.3–3 mm · ASTM A240
Stainless coil
Cold-rolled stainless coil in grades 201, 304, 304L and 316L with a 2B or BA finish, 0.3–3 mm thick
GOST 5582-75GOST 5632-2014GB/T 3280-2015GB/T 4237-2015ASTM A240/A240MEN 10088-2:2014201304304L316L
Parameters
| Parameters | |
|---|---|
| Thickness | 0.3–3.0 mm cold-rolled; 3–8 mm hot-rolled to specification |
| Width | 1 000, 1 219, 1 250, 1 500 mm |
| Steel grade | 201, 304, 304L, 316L |
| Surface | 2B, BA; No.1 for hot-rolled |
| Protective film | polyethylene, single- or double-sided to specification |
| Edge | trimmed edge |
| Coil inside diameter | 508 or 610 mm |
Sizes and weight
| t, mm | Weight, kg/m² | Sheet 1 500×6 000, kg |
|---|---|---|
| 0.3 | 2.36 | 21.2 |
| 0.4 | 3.14 | 28.3 |
| 0.5 | 3.93 | 35.3 |
| 0.6 | 4.71 | 42.4 |
| 0.8 | 6.28 | 56.5 |
| 1 | 7.85 | 70.6 |
| 1.2 | 9.42 | 84.8 |
| 1.5 | 11.8 | 106 |
| 2 | 15.7 | 141.3 |
| 2.5 | 19.6 | 176.6 |
| 3 | 23.5 | 212 |
Theoretical weight at steel density 7.85 g/cm³. Actual batch weight is by scale and mill certificate.
Description
Stainless coil is cold-rolled strip of corrosion-resistant steel that after rolling has been bright annealed or annealed and pickled, then skin-passed. The 2B finish is matt silver after pickling and skin-passing, the base finish for industrial equipment; BA is mirror-like after bright annealing in a protective atmosphere, for decorative and food-contact surfaces. Hot-rolled coil 3–8 mm thick is supplied with a No.1 finish to specification. The surface is covered with protective film.
The grades differ in composition and resistance. 304 (06Cr19Ni10, 08Kh18N10) is the base chromium-nickel austenitic steel for food, chemical and household equipment; 304L has reduced carbon, for welded structures without subsequent heat treatment. 316L (022Cr17Ni12Mo2, 03Kh17N14M3) contains molybdenum and withstands chloride and acidic media. 201 (12Cr17Mn6Ni5N) is chromium-manganese steel in which nickel is partly replaced by manganese and nitrogen: suitable for decorative and indoor uses, with lower corrosion resistance than 304. Mills in China roll to GB/T 3280; export batches are certified to ASTM A240 and EN 10088-2.
Inspection at the mill before shipment: the grade on the outer wrap with a positive material identification (PMI) analyser by chromium, nickel and molybdenum content — substitution of 201 for 304 is detected only this way; thickness with a micrometer at the edges and in the middle of the width; width with a tape; uniformity of the 2B or BA finish, absence of scratches, rolled-in particles and stains under the film. The mill test certificate (MTC) is checked against the heat number on the tag: grade, chemical composition, yield strength, tensile strength, elongation, hardness. Marking on the film, the wrapping and the strapping are checked. The weight in the calculated table below is at a density of 7.85 g/cm³; for austenitic grades the design density is higher (7.93 for 304, 7.98 for 316L per the ASTM A480 table), and tonnage is taken by weighing.
Applications
- vessels, tanks and pipework for the food industry
- equipment for chemical and pharmaceutical plants
- welded stainless tube via slit strip
- kitchen and retail equipment, sinks, hoods
- lift cars, handrails, interior cladding
- heat exchangers and boiler plant components
Packing and shipment
The surface is covered with protective film; the coil is wrapped in moisture-proof paper, the end faces are closed with rings, strapped with steel band around the circumference and through the eye; mill tag with heat number, grade, finish, thickness, width and weight.
Grade equivalents
| GOST | GB (China) | ASTM | EN | Note |
|---|---|---|---|---|
| St3sp | Q235B | A1011 CS Type B / A36 | S235JR | Correspondence by mechanical properties; the chemical composition and impact toughness requirements differ between the standards — check against the MTC. |
| 09G2S | Q355B (Q345B) | A572 Grade 50 | S355JR | Nearest analogue: yield strength is comparable, but 09G2S carries more manganese and silicon alloying. |
| 08ps | DC01 / SPCC | A1008 CS Type B | DC01 | Cold-rolled low-carbon steel for general use; deep drawing calls for DC03–DC04 or 08Yu. |
| 08ps ZN (GOST 14918) | DX51D+Z | A653 CS Type B | DX51D+Z | Galvanized base for bending and roll forming; the zinc class is specified separately (Z100–Z275). |
| 250 / 350 (GOST 14918) | S250GD+Z / S350GD+Z | A653 SS Grade 37 / 50 | S250GD+Z / S350GD+Z | Structural galvanized grades with a specified yield strength; ASTM SS is the nearest analogue by strength. |
| 08Kh18N10 | 06Cr19Ni10 | 304 | 1.4301 | Austenitic chromium-nickel steel; the GOST grade allows a higher carbon content than 304L. |
| 03Kh17N14M3 | 022Cr17Ni12Mo2 | 316L | 1.4404 | Molybdenum-bearing low-carbon austenitic steel; close correspondence. |
| 12Kh17G9AN4 | 12Cr17Mn6Ni5N | 201 | 1.4372 | Nearest analogue: chromium-manganese steel with nitrogen, nickel partly replaced by manganese; corrosion resistance is lower than that of 304. |
Equivalents are the closest match, not identical: chemistry and tolerances differ between standards. The exact grade and standard are written into the contract.
Related items
DC01 · 08ps · SPCC · 0.4–3 mm · width 1 000–1 500 · GOST 19904
Cold-rolled coil
Cold-rolled annealed coil in DC01, 08ps and SPCC, 0.4–3 mm thick, for pressing, painting and galvanizing
Buyer questions
How to read a mill test certificate (MTC) for coil
Four blocks in the certificate must agree: the heat number and coil number with the tag on the coil; the grade and standard with the specification; the chemical composition with the limits of the standard for that grade; the mechanical properties (yield strength, tensile strength, elongation) with the values required by the standard. For galvanized coil the zinc coating weight is added, for colour-coated coil the type and thickness of the paint layer. The bureau checks the MTC against the heat at the mill before shipment and hands over the original with the batch.
How hot-rolled coil differs from cold-rolled
Hot-rolled coil is rolled above the recrystallisation temperature: thickness from 1.5 mm, surface with mill scale, wider thickness tolerance. Cold-rolled coil is made from hot-rolled by pickling and cold reduction followed by annealing: thickness from 0.3 mm, smooth surface, tighter tolerance, and the steel is more ductile after annealing. Welded tube, profiles and structures take hot-rolled; pressing, body panels, galvanizing and painting take cold-rolled.
How coil tonnage is calculated
The theoretical weight of one square metre is 7.85 kg per millimetre of thickness; the coil weight is the strip area multiplied by that figure. Shipment and payment go by the actual weight from weighing, recorded in the certificate and on the tag; the difference from the theoretical weight comes from the thickness tolerance. The specification states tonnes, not the number of coils, and separately the maximum weight of one coil and the inside diameter to suit your decoiler.
What the bureau inspector checks at the mill before shipment
Thickness with a micrometer on the outer wrap at several points across the width and on the coil end face; width with a tape; telescoping and tightness of winding; condition of the edge and surface; the heat number on the tag against the MTC; for galvanized coil the uniformity of the coating and absence of bare spots, for stainless coil the grade with a positive material identification (PMI) analyser; packing and strapping. The result is an inspection report with photographs. Rejects recorded in the report are replaced; the replacement is supplied by the mill under its contract with the bureau.
How the batch is sized
The batch is sized to your volume — send your specification: grade and standard, thickness with tolerance, width, surface condition, for coated coil the zinc class and polymer type with the RAL colour, plus the inside diameter and maximum weight of a coil. Mills roll coil to order by width and thickness, so the more precise the specification, the fewer approvals are needed. The bureau selects a mill for that specification and returns confirmed delivery terms.
Price request
Send your specification and we will quote your batch
Steel pricing depends on grade, size, tonnage and delivery terms on the day of contract. A number on the page would be wrong by the time you read it.
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