Yunus Sheets and Plates, located in Istanbul, Turkey, stands out as a top manufacturer and supplier of Stainless Steel 309H Angles. They specialize in high-quality stainless steel products that are built for strength, durability, and performance in high-temperature environments. Known for their precision in manufacturing and commitment to international standards, the company delivers dependable solutions for industries that need materials tough enough to handle harsh conditions. The Stainless Steel 309H Angles are crafted to offer outstanding corrosion resistance and impressive mechanical properties, even at elevated temperatures. With state-of-the-art production facilities and rigorous quality control measures, Yunus Sheets and Plates guarantees that their angles are long-lasting and high-performing, making them perfect for use in construction, petrochemical, power generation, and mechanical engineering sectors.
These Stainless Steel 309H Angles are a type of high-temperature austenitic stainless steel, primarily made up of iron, chromium (23–25%), nickel (12–15%), along with carbon, manganese, silicon, and small amounts of phosphorus and sulfur. This alloy is known for its excellent tensile and yield strength, remarkable toughness, and outstanding resistance to oxidation and scaling when exposed to high temperatures. The higher carbon content enhances creep resistance and mechanical stability under thermal stress. Stainless Steel 309H Angles are designed to maintain their shape and durability even in extreme conditions, making them ideal for structural and industrial applications that require both high-temperature performance and long-lasting mechanical reliability.
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.
Yunus Sheets and Plates based in Istanbul, Turkey, 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 angles find extensive use in industries where high-temperature strength and corrosion resistance are crucial. In the petrochemical and chemical fields, they are commonly found in heat exchangers, furnace components, and reactor vessels. The power generation sector employs them in boilers, superheaters, and high-temperature structural supports. In construction, these angles are utilized in frameworks, bridges, and architectural structures that are exposed to heat and oxidation.
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