ASME SA240 / ASTM A240 UNS S31609 316H Stainless steel sheet

ASME SA240 / ASTM A240 UNS S31609 Stainless Steel Sheet plate strip

Gangsteel proudly presents sa240/a240 uns s31609, a high-performance austenitic stainless steel sheet, plate, and strip compliant with sa240/a240 uns stainless grades standards, including ASTM A240 and ASME SA240. Renowned for its superior corrosion resistance, excellent weldability, and high-temperature strength, this material is ideal for demanding applications like pressure vessels, heat exchangers, and chemical processing equipment. As a trusted uns stainless supplier, Gangsteel maintains a robust inventory exceeding 600 tons and leverages advanced manufacturing to deliver tailored solutions globally, ensuring rapid delivery and precision.

Gangsteel examines the ASME SA240/ASTM A240 UNS S31609 properties, covering its chemical composition, density, mechanical properties, corrosion resistance, weldability, surface finishes, equivalent materials, specifications, applications, and competitive pricing per kg. Whether you're sourcing for high-temperature or corrosive projects, UNS S31609 offers a reliable, cost-effective solution. Discover related grades such as sa240/a240 uns s31725 and others in our extensive portfolio to meet diverse project needs.

Why Choose ASME SA240/ASTM A240 UNS S31609 Stainless Steel Sheet?

ASME SA240/ASTM A240 UNS S31609 (Type 316H), an austenitic stainless steel, features 16.0-18.0% chromium, 2.0-3.0% molybdenum, and higher carbon (0.04-0.10%) for enhanced high-temperature strength. Tailored for applications like pressure vessels, heat exchangers, and piping in elevated temperatures, it benefits from molybdenum for pitting resistance and low carbon for weldability, surpassing grades like sa240/a240 uns s30400 in corrosive environments. Its austenitic structure ensures excellent formability and toughness up to 870°C (1600°F).

Gangsteel notes that UNS S31609 offers superior high-temperature creep resistance compared to sa240/a240 uns s31600 due to elevated carbon, and it is more cost-effective than high-alloy grades like sa240/a240 uns s31725. While sensitive to sensitization at high temperatures, proper heat treatment mitigates risks.

Key benefits include:

• Superior Corrosion Resistance: Molybdenum (2.0-3.0%) enhances pitting resistance in chloride environments, outperforming sa240/a240 uns s30400.
• High-Temperature Strength: Elevated carbon improves creep resistance up to 870°C (1600°F), ideal for pressure vessels.
• Excellent Weldability: Low carbon minimizes carbide precipitation, comparable to sa240/a240 uns s31600.
• Formability: Austenitic structure ensures easy fabrication for complex designs.

Case Study: A petrochemical plant in India used UNS S31609 sheets for heat exchanger tubing, achieving a 15% cost reduction compared to sa240/a240 uns s31725 while maintaining high-temperature performance.

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ASME SA240/ASTM A240 UNS S31609 Density

Gangsteel confirms that the density of ASME SA240/ASTM A240 UNS S31609 is approximately 8.00 g/cm³ (0.289 lb/in³), typical for austenitic stainless steels with molybdenum, aligning with sa240/a240 uns s31600 (8.00 g/cm³) and higher than ferritic sa240/a240 uns s41003 (7.70 g/cm³). This density supports precise weight calculations for pressure vessels.

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Corrosion Resistance of ASME SA240/ASTM A240 UNS S31609

Gangsteel emphasizes that ASME SA240/ASTM A240 UNS S31609 offers excellent corrosion resistance in moderately corrosive environments due to its 16.0-18.0% chromium and 2.0-3.0% molybdenum content, with a pitting resistance equivalent number (PREN) of ~24.0-26.0. Ideal for chemical processing and marine applications, it outperforms sa240/a240 uns s30400 but is less resistant to severe chloride environments than sa240/a240 uns s31725. Its high-temperature oxidation resistance is comparable to sa240/a240 uns s31600.

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Weldability of ASME SA240/ASTM A240 UNS S31609

Gangsteel notes that the low carbon content (0.04-0.10%) in ASME SA240/ASTM A240 UNS S31609 ensures excellent weldability, with molybdenum enhancing pitting resistance post-weld. It outperforms duplex grades like sa240/a240 uns s31803 in formability but requires post-weld annealing to avoid sensitization. Suitable for TIG, MIG, and shielded metal arc welding, it uses ER316L fillers.

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ASME SA240/ASTM A240 UNS S31609 Stainless Steel Surface Finishes

Gangsteel offers a range of surface finishes for ASME SA240/ASTM A240 UNS S31609 to enhance its versatility:

These finishes make sa240/a240 uns s31609 suitable for applications like 2B for pressure vessels or BA for decorative panels.

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Chemical Composition of ASME SA240/ASTM A240 UNS S31609

Gangsteel ensures that the ASME SA240/ASTM A240 UNS S31609 chemical composition is optimized for corrosion resistance and high-temperature strength, compliant with sa240/a240 uns stainless grades.

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Mechanical Properties of ASME SA240/ASTM A240 UNS S31609

Gangsteel notes that the ASME SA240/ASTM A240 UNS S31609 mechanical properties provide high-temperature strength and ductility, ideal for pressure vessels. Annealing at 1010-1120°C (1850-2050°F) optimizes performance.

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Specifications and Forms of ASME SA240/ASTM A240 UNS S31609

Gangsteel supplies sa240/a240 uns s31609 in various forms, compliant with ASTM A240 and ASME SA240:

• Sheet and Plate: 0.1-6 mm (sheet), 0.5-50 mm (plate), width up to 2000 mm, length 2000-12000 mm. Finishes include 2B, No.1, No.4, BA.
• Coil: 0.1-6 mm thickness, up to 2000 mm width, for welded components.
• Bar: 6-300 mm diameter, up to 12000 mm length, hot-rolled or cold-drawn.
• Custom Components: Flanges, fittings, and stainless cutting sheet part with ±0.05 mm tolerances.

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Applications of ASME SA240/ASTM A240 UNS S31609

Gangsteel highlights that ASME SA240/ASTM A240 UNS S31609 excels in high-temperature and corrosive applications:

• Pressure Vessels: Shells and heads for high-pressure systems.
• Heat Exchangers: Tubing and plates for elevated temperatures.
• Chemical Processing: Piping and reactor components.
• Power Generation: Boiler tubes and exhaust systems.
• Welded Components: Cost-effective for general use.

Case Study: A petrochemical plant in India used UNS S31609 for pressure vessel heads, saving 15% compared to sa240/a240 uns s31725 while maintaining high-temperature performance.

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Comparison of ASME SA240/ASTM A240 UNS S31609 with Related Grades

Gangsteel presents a comparison of sa240/a240 uns s31609 with six austenitic grades:

• UNS S31609 vs UNS S31725: Superior high-temperature strength due to higher carbon, while sa240/a240 uns s31725 offers better pitting resistance.
• UNS S31609 vs UNS S31726: Similar to S31725, but S31726 has higher nitrogen for strength.
• UNS S31609 vs UNS S31753: S31753 has lower carbon for better weldability.
• UNS S31609 vs UNS S32050: S32050 has higher molybdenum for superior corrosion resistance.
• UNS S31609 vs UNS S32615: S32615 has higher nickel for enhanced formability.
• UNS S31609 vs UNS S32654: S32654 has higher chromium and molybdenum for exceptional corrosion resistance.

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Equivalent Materials for ASME SA240/ASTM A240 UNS S31609

Gangsteel ensures ASME SA240/ASTM A240 UNS S31609 aligns with global standards:

Keywords: ASME SA240/ASTM A240 UNS S31609 equivalent, UNS S31609 equivalent, EN X5CrNiMo17-12-2, GB 022Cr17Ni12Mo2, JIS SUS 316H

FAQ

Q: How does UNS S31609 compare to UNS S31600 in high-temperature applications?

A: UNS S31609 (316H) has higher carbon (0.04-0.10%) than sa240/a240 uns s31600 (≤ 0.08%), enhancing creep resistance and strength at temperatures up to 870°C (1600°F), making it ideal for pressure vessels and heat exchangers. UNS S31600 is better for general corrosion resistance but less suited for prolonged high heat.

Q: Is UNS S31609 suitable for chemical processing, and how does it compare to UNS S31725?

A: Yes, sa240/a240 uns s31609 is suitable for chemical processing due to its molybdenum (2.0-3.0%) for pitting resistance. Compared to sa240/a240 uns s31725, with higher molybdenum (4.2-5.0%) and nitrogen (0.18-0.24%), UNS S31609 offers better high-temperature strength but lower pitting resistance, making it ideal for heat-exposed piping, while S31725 suits severe chloride environments.

Q: What is the price difference between UNS S31609 and UNS S32050, and what drives this difference?

A: UNS S31609 is priced at USD 4-6 per kg (FOB), 25-40% less expensive than sa240/a240 uns s32050 (USD 6-8 per kg) due to lower molybdenum (2.0-3.0% vs. 6.0-7.0%) and nickel (10.0-14.0% vs. 24.0-26.0%). Factors like alloy content, market demand for super-austenitic grades, and production complexity drive the price difference.

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Contact Us

Gangsteel invites you to contact them at admin@gangsteel.com for sa240/a240 uns s31609 quotes and custom solutions.

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