Home > Sheet and Plates > Stainless Steel 347/347H Sheet and Plates
Harsh Metalloys, a reputable manufacturer and supplier based in Mumbai, India, specializes in high-quality Stainless Steel 347/347H Sheets and Plates. These products are perfect for environments that experience high temperatures, high pressures, and corrosive conditions. SS 347 is an austenitic stainless steel that’s stabilized with niobium (columbium) to help prevent intergranular corrosion, while SS 347H is the high-carbon variant that offers better creep resistance and mechanical strength when exposed to elevated temperatures. Manufactured according to ASTM A240 standards, these sheets and plates come in a variety of thicknesses, widths, and finishes to cater to the diverse needs of industries like petrochemical, power generation, and chemical processing.
Stainless Steel 347/347H Sheets and Plates are composed of 17–20% Chromium and 9–13% Nickel, with Niobium (Nb ≥ 10xC) added for resistance to carbide precipitation. SS 347H features a higher carbon content (0.04–0.10%) compared to SS 347, which boosts its creep strength in high-temperature applications. These alloys boast tensile strengths ranging from 515–690 MPa and offer excellent oxidation and corrosion resistance up to 870°C. They are non-magnetic in their annealed state, highly formable, weldable, and resistant to scaling, making them ideal for extended exposure to high heat and chemical environments.
Stainless Steel Sheets and Plates Specification : ASTM A240 / ASME SA240
Dimension Standard : JIS, AISI, ASTM, GB, DIN, EN, etc
Width : 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc
Length : 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc
Thickness : 0.3 mm to 120 mm
Form : Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc.
Surface Finishing : Hot rolled plate (HR), Cold rolled sheet (CR),2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, Chequered, embossed, hair line, sand blast, Brush, etching, SATIN (Met with Plastic Coated) etc.
| C | Cr | Mn | Ni | P | S | Si | Cb/Ta | |
|---|---|---|---|---|---|---|---|---|
| 347 | 0.08 max | min: 17.0 max: 20.0 | 2.0 max | min: 9.0 max: 13.0 | 0.04 max | 0.30 max | 0.75 max | min:10x C max: 1.0 |
| 347H | min: 0.04 max: 0.10 | min: 17.0 max: 20.0 | 2.0 max | min: 9.0 max: 13.0 | 0.03 max | 0.30 max | 0.75 max | min:10x C max: 1.0 |
| Grade | Tensile Strength ksi (MPa) min | Yield Strength 0.2% ksi offset ksi (MPa) min | Elongation (% in 50mm) min | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
|---|---|---|---|---|---|
| 347/347H | 75 (515) | 30 (205) | 40 | 201 | 95 |
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These durable 347 hot rolled sheets are known for their excellent heat and corrosion resistance, making them perfect for industrial fabrication, heat exchangers, and high-temperature structural applications.
The precision of cold rolled 347H plates offers a superior surface finish, enhanced strength, and great oxidation resistance, which is essential for industries like aerospace, chemical, and power generation.
With their anti-slip design, 347 chequered plates blend toughness and corrosion resistance, making them ideal for flooring, walkways, and industrial platforms in high-temperature settings.
These versatile 347 perforated sheets facilitate airflow and filtration while resisting corrosion, commonly used in architectural designs, chemical processing, and heat exchanger applications.
Thin 347H shim sheets provide precise thickness control, heat stability, and corrosion resistance, making them perfect for machinery alignment and gasket applications.
These smooth, polished 347 plates not only look great but also offer durability and oxidation resistance, making them suitable for decorative, architectural, and industrial applications in high-temperature environments.
Stainless Steel 347/347H Sheet and Plates are widely used in industries that demand high-temperature resistance and corrosion protection. Applications include heat exchangers, boiler components, pressure vessels, superheaters, and furnace parts. These materials are especially suitable for environments where thermal cycling and welding are common, such as in petrochemical plants, power generation units, and chemical processing equipment. Their stabilized composition ensures long-term reliability under stress and heat, making them ideal for structural components, flue gas scrubbers, and high-temperature ducts. Aerospace, marine, and refinery industries also use these sheets and plates for their excellent durability and strength.
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