Stainless steel rolled from slabs on a hot strip mill, then annealed and pickled to a dull No. 1 (1D) finish and sold as coil or cut sheet, typically 2–12 mm thick. Most of it is re-rolled cold into thinner sheet; the rest is used directly for tanks, structures, pipe and plate parts where the rougher surface does not matter.
Also called
Stainless HRC
SS hot rolled coil
HRAP
No.1 finish
1D finish
Black coil
304 HR coil
Stainless HR sheet
AR
لفائف وصفائح مدرفلة على الساخن من الفولاذ المقاوم للصدأ
ZH
不锈钢热轧卷板
DE
Warmgewalztes Edelstahl-Band und -Blech
FR
Bobines et tôles laminées à chaud en acier inoxydable
ES
Bobinas y chapas laminadas en caliente de acero inoxidable
IT
Coils e lamiere laminati a caldo in acciaio inossidabile
TR
Paslanmaz çelik sıcak haddelenmiş rulo ve sac
RU
Горячекатаный рулон и лист из нержавеющей стали
Main formsBlack coil (unannealed), hot-rolled annealed and pickled coil (HRAP), cut sheet and plate, slit coil
Typical sizesThickness about 2–12 mm (to ~16 mm on some mills); width 1000–2000 mm
Main standardsASTM A240, ASTM A480, EN 10088-2, EN 10028-7, EN ISO 9444-2, JIS G4304, GB/T 4237
Typical usesFeed for cold rolling, welded pipe, tanks and pressure equipment, structural and industrial parts
Overview
Stainless hot-rolled coil starts as a continuously cast slab, reheated and rolled on a hot strip mill — a Steckel mill or a continuous multi-stand mill — to a thickness of a few millimetres, and coiled. This 'black' coil is covered in oxide and is hard; it is then annealed (solution treated for austenitic grades) and pickled in acid to remove the scale and the chromium-depleted layer under it, giving the hot-rolled annealed and pickled (HRAP) product with the No. 1 or 1D finish: dull, slightly rough and non-reflective.
HRAP is the feed for cold rolling and much of it never leaves the producing group. Traded hot-rolled coil and sheet go to pipe and tube mills, tank and vessel fabricators, and industrial users who need thicknesses above the cold-rolled range. Thicker material cut from coil is often sold as plate; the finish and tolerances then follow the coil standards, not those of quarto plate.
Prices of stainless flat products are set by nickel, chromium and molybdenum as well as by steel demand, and most contracts quote the base price plus an alloy surcharge. China and Indonesia now produce more than half of the world's stainless steel, which sets the tone for Asian export prices of 304 coil. MESteel publishes monthly prices for 304 hot-rolled coil and 316L hot-rolled coil, and the stainless steel futures price traded in China.
The GCC imports all its stainless flat steel — mainly from China, Indonesia, India, Korea, Taiwan and Europe — through service centres and stockists in the UAE and Saudi Arabia that cut, slit and distribute it to pipe mills, fabricators, desalination and oil and gas contractors.
Forms & sizes
Hot-rolled stainless is ordered by grade, finish, thickness, width and coil weight, or by sheet size. Thickness tolerances for continuously hot-rolled material are in EN ISO 9444-2 and ASTM A480.
HRAP coil
2.0–12 mm, widths 1000, 1219, 1250, 1500, 1524 and 2000 mm, coils of 10–25 t
Black coil
Unannealed, unpickled, sold mainly to re-rollers
Sheet
Cut lengths 2000, 2438, 2500, 3000, 6000 mm; 4 × 8 ft and 5 × 10 ft
TSI METAL INDUSTRIES LLCAESteel Mills - Agents & Traders · Tube Manufacturer · Stockist - Distributor · Dubai
Gold
SellsCold Rolled, Hot Rolled Plates, Hot Rolled, Beams & Sections +8 BuysCold Rolled, Chemicals for descaling and pickling, Angles, Hot Rolled Plates +8
Steel Mills - Agents & Traders · Stockist - Distributor · Base Materials · Dubai
