Stainless Steel Coil 304 / 304L / 316 / 316L

DONGSAHNG supply cold and hot rolled stainless steel coil in wide range sizes, we have capability to offer narrow width and thin thickness coil with the tightest tolerance, stainless steel mainly includes 304, 304L, 316, 316L, 321, 2205, S31803, 310S, 904 and other grades.

A wide selection of standard and special surface finishes can be provided for stainless steel coil & strip, such as 2B, 2D and BA finish, material from leading manufacturer, such as BAOSTEEL, TISCO and POSCO, cold rolled and hot rolled coil are available.

Coil Standards

ASTM A240, Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications. The steel shall conform to the requirements as to chemical composition specified. The material shall conform to the mechanical properties specified.

ASTM A480, Standard Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip. The steel shall be made by one of the following processes: electric-arc, electric-induction, or other suitable processes. Heat and product analyses shall conform to the chemical requirements for each of the specific elements. The material shall undergo mechanical tests such as tension test, hardness test, and bend test. Special tests like intergranular corrosion test, permeability test, Charpy impact testing and tests for detrimental intermetallic phases in wrought duplex stainless steels shall be also be performed when required.

Stainless Steel Grades

There are over 150 stainless steel grades for use in many industries, due to excellent properties of stainless steel, high strength resistance and corrosion resistance are key properties, meanwhile, stainless steel have multiple benefits, durable material, easy to fabricate and low maintenance。

Material is available in austenitic stainless steel, ferritic stainless steel, duplex steel and martensitic stainless steel grades, Austenitic is the most widely used stainless steel group. Some common stainless steel grades are listed below, they are widely used for coil and strip, more grades can be offered.

Grade C Si Mn P S Cr Ni Mo
304 ≤.080 ≤1.00 ≤2.00 ≤.045 ≤.030 18.00-20.00 8.00-10.50  
304L ≤.030 ≤1.00 ≤2.00 ≤.045 ≤.030 18.00-20.00 8.00-12.00  
316 ≤.080 ≤1.00 ≤2.00 ≤.045 ≤.030 16.00-18.00 10.00-14.00 2.00-3.00
316L ≤.030 ≤1.00 ≤2.00 ≤.045 ≤.030 16.00-18.00 10.00-14.00 2.00-3.00
321 ≤.080 ≤1.00 ≤2.00 ≤.045 ≤.030 17.00-19.00 9.00-12.00  
409 ≤.080 ≤1.00 ≤1.00 ≤.040 ≤.030 10.50-11.75 ≤.500  
409L ≤.030 ≤1.00 ≤1.00 ≤.040 ≤.030 10.50-11.75 0.5  
430 ≤.120 ≤1.00 ≤1.00 ≤.040 ≤.030 16.00-18.00  

Coil Slitting

Striping processing, commonly known as “slitting “, refers to the winding of a metal coil by unwinding, slitting, leveling, winding, and processing into a desired width。 Slitting processing is a basic metal processing technology that combines high-quality equipment with skilled craftsmanship。 it can be obtained with strict tolerance, perfect surface control , safe packaging as well as fine transportation。

  • Max thickness: 18 mm
  • Min thickness: 0.1 mm
  • Max width: 2150 mm
  • Min width: 8 mm
  • Width tolerance: 0 – 0.1 mm
  • Burr: T<1mm: ≤0.05mm; T≥1mm: ≤5%T
stainless steel coil slitting

Stainless Steel Coil Finishes and Dimensions

Surface finishThickness (mm)Width (mm)
2B – Cold rolled, heat treated, pickled, skin passed0.3 – 6.0max. 2032
2D – Cold rolled, heat treated, pickled0.4–6.35max. 1524
No.1 – Hot rolled, annealed, and descaled0.4–8.0max. 2032
BA – Cold rolled, bright annealed0.25–3.5max. 1524
Polished, brushed0.5–4.0max. 1524

For special grades, stainless steel coil thickness ranges are described below.

GradesThickness (mm)
1 – 60
3 – 30
317L3 – 20
1.5 – 10
254 SMO2 – 20
stainless steel coil