Nial Sheets and Plates is a reliable manufacturer and supplier of top-notch Stainless Steel 309H Angles based in Houston, USA. We cater to industries that demand exceptional high-temperature strength and oxidation resistance. Our Stainless Steel 309H Angles are meticulously crafted to ensure they perform consistently in structural and support applications that face elevated temperatures and thermal cycling. With our rigorous quality control, advanced fabrication techniques, and prompt delivery, we proudly serve the petrochemical, power generation, furnace, and heat treatment sectors with Stainless Steel 309H Angles that guarantee durability, structural integrity, and long-lasting performance even in extreme heat conditions.
Stainless Steel 309H Angles are high-carbon austenitic stainless steels, featuring around 22–24% chromium and 12–15% nickel, with a higher carbon content than standard 309, enhancing their creep strength and high-temperature resilience. They boast excellent oxidation resistance, remaining effective in continuous service up to 1000°C. Their mechanical properties include a tensile strength of approximately 550–750 MPa and a yield strength close to 205 MPa, along with good toughness and structural integrity at elevated temperatures, making them perfect for load-bearing applications in hot environments.
Specifications : ASTM A276, ASTM A479 / ASME SA276, ASME SA479
Angle Size Range : 20 x 20 mm to 100 x 100 mm
Angles Thickness : 3 to 12 mm (depending on size)
Channel Size Range : Base: 80 to 150 mm; Side: 40 to 75 mm
Channel Thickness : 5 to 6 mm (depending on size)
Length : 3MTR, 4MTR, 5MTR, 6MTR, or Custom Cut Sizes
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 309 | min. | – | – | – | – | – | 18.0 | – | 8.0 | – |
| max. | 0.10 max | 2.0 max | 0.75 max | 0.045 max | 0.03 max | 20.0 | 10.5 | – | ||
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 309 | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % | 92 | 201 |
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 309 | S30900 | – | – | 1.4828 | – | – | – |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Nial Sheets and Plates based in Houston, USA, is a leading supplier and stockist of high-quality metal products, including Sheets, Plates, Coils, Foils, Angles, Channels, Circles, and Slitting Coils, all offered with exceptional service and tailored to meet our customers specific requirements. With a focus on delivering superior products, we cater to a wide range of industries, providing reliable solutions for diverse applications. Our extensive inventory includes Known for our unique finishing techniques and commitment to quality. We are dedicated to ensuring customer satisfaction through dependable service and top-notch products.
The stainless steel 309H angle provides excellent high heat resistance, making it ideal for hot environments. The high chromium and nickel content provides outstanding oxidation and corrosion resistance, as well as durability under extreme conditions. High carbon content increases its creep strength, making it suitable for long-term exposure to high temperatures. It exhibits excellent weldability and formability, making it easy to manufacture for structural applications. Furthermore, its strong mechanical properties and resistance to heater fatigue make it reliable for industries such as power generation, chemical processing and manufacturing, ensuring longevity and it works well.
These Stainless Steel 309H Angles find extensive use in situations where structural support must withstand ongoing exposure to high temperatures and oxidation. They’re commonly utilized in structural frameworks for furnaces, kilns, heat exchangers, and thermal processing equipment. Power plants and petrochemical industries rely on them for burner supports, ducting, and flue gas systems. They’re also ideal for heat treatment fixtures and supports that need to maintain strength during thermal cycling. The chemical and refinery sectors depend on them for equipment that faces hot corrosive gases. Thanks to their high-temperature stability and oxidation resistance, Stainless Steel 309H Angles are a trustworthy choice for demanding heat-intensive applications.
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Houston, TX 77041
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