1.4919 – High-Strength Austenitic Steel: High-Temp Pressure Vessel Alloy

Overview

1.4919 is a high-strength, heat-resistant austenitic stainless steel, engineered for high-temperature and high-pressure applications in European industrial sectors. Composed of 19.00-22.00% chromium, 10.00-13.00% nickel, and 2.50-3.50% molybdenum, it offers exceptional creep strength and corrosion resistance at elevated temperatures (up to 750°C continuous service). It also contains trace amounts of titanium and niobium for stabilization, preventing intergranular corrosion during welding and high-temperature service. Its austenitic structure ensures non-magnetic properties and good ductility, making it suitable for critical high-temperature pressure-bearing components.

Chemical Composition (wt%)

C ≤ 0.08, Si ≤ 1.00, Mn ≤ 2.00, P ≤ 0.045, S ≤ 0.030, Cr: 19.00-22.00, Ni: 10.00-13.00, Mo: 2.50-3.50, Ti: 0.10-0.30, Nb: 0.10-0.30

Typical Mechanical Properties (Annealed Condition)

Tensile Strength (Rm): ≥ 550 MPa; Yield Strength (Rp0.2): ≥ 220 MPa; Elongation (A): ≥ 35%; Brinell Hardness (HB): ≤ 217

Core Advantages

High Cr-Mo-Ni content enhances high-temperature creep strength and corrosion resistance; titanium-niobium stabilization prevents intergranular corrosion; non-magnetic; good weldability with proper preheating; compliant with European EN high-pressure steel standards.

Applications

High-temperature, high-pressure boilers in European power plants, steam turbines, petrochemical cracking equipment, nuclear power plant components, and high-temperature pressure vessels.

Equivalent Grades

UNS S31635, STS316TiH, EN 1.4919, GB 06Cr19Ni13Mo3Ti, AISI 316TiH

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.