309S Stainless Steel Cold Rolled Coil
Grade：300 Series
Technique：cold Rolled
Sample:Availabled
Tolerance：5%
SurfaceBa/2b/No.1/No.3/No.4/8K/Hl/2D/1d
Thickness：0.15-100mm
Packing：Standard Sea-Worthy Packing
Delivery Time：8-14 Days
Length：Customers′ Requirement
What is 309S Stainless Steel Cold Rolled Coil?
309S stainless steel cold rolled coil is a high-strength, high-hardness stainless steel sheet manufactured by cold rolling process, with excellent corrosion resistance and smooth surface. Its surface can be processed in a variety of ways, such as mirror, brushed, frosted, etc., to meet different needs.
stainless steel 309S coil stock
Stainless Steel 309S Cold Rolled Strips Advantages
🔹After removing the hot-rolled oxide scale, the 2B surface roughness of 309S stainless steel cold-rolled coil is Ra≤0.8μm (BA surface Ra≤0.2μm), and it can be used for high-end kitchenware (such as oven liner) and the inner wall of heat treatment equipment without additional polishing, saving 30% of surface treatment costs.
🔹The surface defect rate of 309S stainless steel coil after cold rolling is <0.3% (industry average 1%), and the fluidity during welding is good, reducing defects such as pores and slag inclusions, and the welding qualification rate is ≥98%. The hardness is increased from HRB 95 to 110, and the tensile strength is ≥520MPa, which not only maintains the bending toughness (elongation ≥40%), but also improves the wear resistance.
Why Choose GNEE
🔹Customized processing:
Slitting accuracy ±0.1mm, minimum width 50mm, suitable for precision instrument parts;
Surface deep processing: sandblasting, brushing, anti-fingerprint treatment to meet high-end decoration needs.
🔹Testings (Destructive, Non Destructive):
Chemical Analysis – Spectro Analysis
Hardness Test
Micro Test, Macro Test
Mechanical Testing Such as Tensile, Elongation, Reduction of Area
Positive Material Identification – PMI Testing
🔹Free "309S Cold Rolled Coil Processing Manual", including bending radius calculation (R=2t), welding parameter table (ER309L welding wire recommended, current 100-130A), if you need it, please contact us immediately!
Stainless Steel Hot Rolled Coil Specification
309 Stainless Steel Coil Specifications:
| Grades | Stainless Steel J1, J2, J4, 201, 202, 301, 304, 304H, 304L, 309, 309S, 310, 310S, |
| Thickness | 0.02mm – 5.0mm |
| Width | 3.2mm – 1500mm |
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, AS PER CUSTOMER'S REQUIREMENT |
| Type of Material | Stainless steel mild steel, deep drawn steel, extra deep drawn steel, quarter hard steel, semi hard steel, full hard steel. |
| Form | Coil / Strip |
| Test Certificate | Yes. |
| Finish | NO.1, 2B, 2D, 2H, 2R, No.4, HAIRLINE, SCOTCH BRITE, SATIN FINISH, NO.8, BA. |
Chemical Composition of Stainless Steel 309 Coil
| Grade | Fe | Cr | Ni | Mn | Si | C | P | S |
| SS 309 | 60% | 23% | 14% | 2% | 1% | 0.20% | 0.045% | 0.030% |
ASTM A240 SS 309S Coil Mechanical Properties
| Yield Strength 0.2% Offset0 |
Ultimate Tensile Strength |
Elongation in 2 in. |
Hardness | ||
| psi (min.) | (MPa) | psi (min.) | (MPa) | % (min.) | (max.) |
| 45,000 | 310 | 85,000 | 586 | 50 | 202 (HBN) |
Stainless Steel 309S Coil Physical Properties
| Grade | Density (lb / cu. in.) | Specific Gravity | Specific Heat (Btu/lb/Deg F – [32-212 Deg F]) | Electrical Resistivity (microhm-cm (at 68 Deg F)) | Melting Point (Deg F) | Modulus of Elasticity Tension |
| 309S | 0.287 | 7.9 | 0.12 | 468 | 2650 | 29 |
309S stainless steel coil factory
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