EN 1.4961 Austenitic Stainless Steel – High-Strength Heat-Resistant Alloy

Description

EN 1.4961 is a high-strength austenitic stainless steel, designed for elevated-temperature applications requiring exceptional creep resistance and mechanical strength. Composed of 18.0-20.0% chromium, 11.0-13.0% nickel, and small additions of molybdenum, niobium, and titanium, it delivers superior performance at temperatures up to 800°C. Unlike standard high-temperature grades like EN 1.4306, it offers enhanced tensile strength and creep resistance, making it suitable for high-pressure, high-heat components. It is non-magnetic at room temperature, has good weldability and formability, and provides reliable corrosion resistance in mild high-heat environments. It is widely used in power generation, petrochemical, and industrial heating applications where high strength and thermal stability are critical.

Chemical Composition (wt%)

C ≤ 0.08, Cr: 18.00-20.00, Ni: 11.00-13.00, Mo: 2.00-2.50, Nb: 0.30-0.60, Ti: 0.10-0.20, Mn ≤ 2.00, Si ≤ 1.00, P ≤ 0.045, S ≤ 0.030

Mechanical Properties

Tensile Strength ≥ 550 MPa, Yield Strength ≥ 220 MPa, Elongation ≥ 35%, Hardness ≤ 220 HB

Advantages

Superior high-temperature creep strength and tensile strength; excellent oxidation resistance at 800°C; good weldability and formability; non-magnetic; reliable corrosion resistance in mild high-heat environments; suitable for high-pressure components.

Applications

High-temperature boiler tubes, petrochemical pressure vessels, power generation equipment, heat exchangers, and industrial heating systems requiring high strength and thermal stability.

Equivalent Grades

AISI 316Nb, UNS S31651, GB 06Cr17Ni12Mo2Nb

 

Stainless Steel Suppliers

If you have project requirements for stainless steel, we welcome your order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.Email: info@gneestainless.com

 

Testing and Documentation: Factory test certificate, EN 10204 3.1, chemical report, mechanical report, destructive testing report, non-destructive testing report, PMI test report, visual inspection report, third-party inspection report, NABL certified laboratory report.
Packaging: Wooden crate packaging, bubble wrap packaging, steel strapping, or packaging according to customer requirements.