AISI 309 Stainless Steel Strip And Coils
Nov 28, 2025
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If you are looking for AISI 309 stainless steel strip and coil, GNEE is your professional supplier, offering high-quality cold-rolled and hot-rolled 309 stainless steel. Our 309 stainless steel features excellent high-temperature resistance (up to 1100°C), superior oxidation and scaling resistance, and good corrosion resistance in mildly corrosive environments, making it ideal for furnaces, heat exchangers, and automotive exhaust system components.
Our Products: 309 Flat Strip, 1.4828 Spring Strip, X15CrNiSi20-12 Stamping Strip, Brushed Finishing Strip, 309 Cold Rolled Coil, Hot Rolled Coil, Stainless Steel Coil Roll, Stainless Steel Coil Spring.
AISI 309 Stainless Steel Strip and coils in stock
| Standard |
ASTM A240, ASTM A276, ASTM A480, ASTM A484 |
|---|---|
| Grade |
1Cr20Ni14Si2, SUH309, X15CrNiSi20-12 |
| Thickness |
Coil: 0.3mm-6mm (0.01-0.24 in), Customized, Strip: 0.1mm-6mm (0.004-0.24 in) |
| Full Width |
Coil: 600mm-2000mm (23.62-78.74 in), Customized, Strip: 10mm-1000mm (0.39-39.37 in) |
| Diameter |
Bar: 3mm-200mm (0.12-7.87 in), Customized |
| Length |
Customized |
| Surface Finish |
2B, Brushed, Customized, NO. 4, No.1, No.8, Polished |
| Form |
Bright Annealed Strip/Coil, Cold Drawn Bar, Cold rolled strip/coil, ect., Flat Plate and Sheet, Hot rolled strip/coil, Round/Square/Flat/Hexagonal Bar |
Chemical Compositions
| C | Ni | Si | S | Mn | P | Cr | Mo |
|---|---|---|---|---|---|---|---|
| 0.20 max | 12.0 – 15.0 | 0.75 max | 0.03 max | 2.00 max | 0.045 max | 22.0 – 24.0 | – |
Mechanical Properties
| Property | SS309 Strip/Coil/Bar (Imperial) | SS309 Strip/Coil/Bar (Metric) |
|---|---|---|
| Tensile Strength | 70 – 106 ksi | 485 – 730 MPa |
| Yield Strength | 30 ksi | 205 MPa |
| Vickers Hardness | 129 – 210 HV | 129 – 210 HV |
| Brinell Hardness | 123 – 201 HB | 123 – 201 HB |
| Rockwell Hardness | HRB 70 – 90 | HRB 70 – 90 |
| Elongation | 40% | 40% |
| Elastic Modulus | 28 – 29 x 10⁶ psi | 193 – 200 GPa |
What is 309 stainless steel used for?
Type 309 is employed for parts requiring both corrosion and heat resistance and oxidation resistance up to 2000 °F. Strength at elevated temperatures is similar to that of 18-8 Stainless Steels. This alloy posses excellent resistance to oxidation as well as high tensile and creep strengths at elevated temperatures.
Our products conform to ASTM A240, JIS G4305, and EN 10088-2 standards and are certified by ISO 9001, SGS, BV, and factory testing (MTC 3.1/3.2). Thickness ranges from 0.3mm to 6mm, width from 1000mm to 1500mm, and length or roll form can be customized. We offer free samples for you to verify product quality before placing bulk orders.
Packaging and Transportation
Packaging: Each sheet or roll is wrapped in moisture-proof paper, lined with plastic film, and secured with steel straps. The outer layer is protected by wooden pallets or crates to ensure safety during international transport.
Identification: Each package includes the furnace number, grade, dimensions, and standard information.
Delivery Time: Typically within 7-15 business days after receiving prepayment.
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