Alloy 309/309S/309H Stainless Steel Coil
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Gnee Super Alloy (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of alloy 309/309s/309h stainless steel coil in China. If you're going to wholesale high quality alloy 309/309s/309h stainless steel coil made in China, welcome to get free sample from our factory. Good service and reasonable price are available.
Alloy 309, 309S, and 309H stainless steel coils are known for their high-temperature resistance and corrosion resistance. These alloys are suitable for various high-temperature applications and environments.
309S (UNS S30908) is the low carbon version of the alloy. It is utilized for ease of fabrication. 309H (UNS S30909) is a high carbon modification developed for enhanced creep resistance. It most instances the grain size and carbon content of the plate can meet both the 309S and 309H requirements.

nd 309H stainless steel coils:
| Property | 309 Stainless Steel Coil | 309S Stainless Steel Coil | 309H Stainless Steel Coil |
|---|---|---|---|
| Standard | ASTM A240, ASME SA240 | ASTM A240, ASME SA240 | ASTM A240, ASME SA240 |
| Grade | 309 | 309S (Low carbon version of 309) | 309H (High carbon version of 309) |
| Thickness | 0.1mm - 12mm | 0.1mm - 12mm | 0.1mm - 12mm |
| Width | 600mm - 2000mm | 600mm - 2000mm | 600mm - 2000mm |
| Length | Coil or cut to length | Coil or cut to length | Coil or cut to length |
| Surface Finish | No.1, 2B, No.4, HL, BA, Mirror | No.1, 2B, No.4, HL, BA, Mirror | No.1, 2B, No.4, HL, BA, Mirror |
| Edge Finish | Mill Edge, Slit Edge | Mill Edge, Slit Edge | Mill Edge, Slit Edge |
| Heat Treatment | Solution Annealed | Solution Annealed | Solution Annealed |
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