At Mitchell Stainless in Hamilton, New Zealand, we supply stainless steel fasteners designed to perform in challenging, high-temperature environments. Our Stainless Steel 309 Bolts are a reliable choice for applications that demand excellent heat and oxidation resistance. Commonly used in industrial and thermal processing settings, these bolts are backed by Mitchell Stainless’ commitment to quality products and responsive local service. We work closely with our customers to understand their requirements and supply fastening solutions they can trust, even when conditions are extreme and performance is critical.
Stainless Steel 309 Bolts are produced from an austenitic stainless steel alloy with high chromium and nickel content. This composition provides outstanding resistance to oxidation and scaling at elevated temperatures. The material offers good tensile strength, toughness, and structural stability under heat. Compared to standard stainless grades, 309 maintains its mechanical properties more effectively during continuous high-temperature exposure, making it suitable for applications where heat resistance and durability are essential.
|
Material |
Specification |
Standards |
Size |
Length |
|
Stainless Steel 309 Bolts |
ASTM, ASME and API |
ASTM B 193 / ASME SB 193 |
M02 to M30 |
3 mm To 200 mm |
| Element | SS 309 |
| Tensile Strength (MPa) min | 480 |
| Yield Strength 0.2% Proof (MPa) min | 275 |
| Elongation (% in 50mm) min | 16 |
| Rockwell B (HR B) max Hardness | 95 |
| Brinell (HB) max Hardness | 201 |
| Element | SS 309 |
| Ni | 0.75 |
| C | 0.15 |
| Mn | 1.00 max |
| P | 0.04 max |
| S | 0.03 max |
| Si | 1.00 max |
| Cr | 11.5 – 13.5 |
| Mo | – |
| N | – |
Contact us to get a quick quote for your requirement.
Stainless Steel 309 Bolts are fasteners with a high heat resistance that have good resistance to oxidation. They are perfect for severe environments and provide strength and reliability in mechanical and thermal conditions.
Stainless Steel 309 Bolts are Fasteners with a high heat resistance that have good resistance to oxidation. They are perfect for severe environments and provide strength and reliability in mechanical and thermal conditions.
Custom Stainless Steel 309 Hex Bolt is a high heat resistant fastener in the shape of a square head with a specific shape, making it strong and reliable for severe heat and difficult areas.
The stainless steel 309 expansion anchor bolt is high temperature fastening and is made use of when fixing concrete or masonry construction. When tight clamped the same expands on the hole. Ensures perfect gripping.
The stainless steel 309 hex flange head bolt offers a hex-head feature with built-in flanges. It thus spreads the load with more weights, providing increased weight distribution and good heat resistance for overheating applications.
Stainless Steel 309 Full Threaded Bolts have full threads along their length, providing consistent clamping force and resistance to heat. They are perfect for high-temperature applications where durability and reliable performance are expected.
After manufacturing our quality control team performs extensive destructive and non-destructive tests on Stainless Steel 309 Bolts. By using advanced tools and techniques for the best possible performance and durability. Once the quality is checked these bolts are packed in a safe manner. With proper packaging material so that no damage occurs during transportation. We ensure timely and hassle-free delivery so that our customers receive their orders on time. All necessary documents are also provided to the client at the time of delivery so that there is transparency and reliability in our services.
Stainless Steel 309 Bolts are widely used in high-temperature industrial applications. Common uses include furnaces, kilns, heat exchangers, boilers, and thermal processing equipment. They are also found in petrochemical plants, power generation facilities, and industrial exhaust systems. At Mitchell Stainless, we often supply 309 bolts for engineering projects that require reliable fastening performance under sustained heat. Their excellent oxidation resistance and strength make them a dependable solution for demanding industrial environments.
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