1.4948 – Austenitic Heat-Resistant Steel: Industrial High-Temp Furnace Core Material

Overview

1.4948 is a high-chromium-nickel austenitic heat-resistant stainless steel, specifically engineered for extreme high-temperature applications that demand exceptional oxidation and creep resistance. It consists of 20.00-23.00% chromium, 11.00-14.00% nickel, and trace amounts of titanium and niobium for stabilization, forming a dense protective oxide film that can endure continuous service at temperatures up to 900°C and short-term peak temperatures up to 1000°C. Its austenitic structure ensures non-magnetic properties after annealing, along with good ductility and weldability. This grade is extensively utilized in European industrial furnaces and high-temperature processing equipment due to its reliable high-temperature performance.

Chemical Composition (wt%)

C ≤ 0.08, Si ≤ 1.00, Mn ≤ 2.00, P ≤ 0.045, S ≤ 0.030, Cr: 20.00-23.00, Ni: 11.00-14.00, Ti: 0.10-0.30, Nb: 0.10-0.30

Typical Mechanical Properties (Annealed Condition)

Tensile Strength (Rm): ≥ 520 MPa; Yield Strength (Rp0.2): ≥ 210 MPa; Elongation (A): ≥ 40%; Brinell Hardness (HB): ≤ 201

Core Advantages

Exceptional high-temperature oxidation and creep resistance; titanium-niobium stabilization effectively prevents intergranular corrosion; non-magnetic structure; good weldability and ductility; complies with European EN heat-resistant steel standards; maintains stable performance under thermal cycling conditions.

Applications

Industrial furnace linings, heat treatment jigs and fixtures, boiler superheater tubes, petrochemical cracking equipment, high-temperature kiln components, and thermal processing tools.

Equivalent Grades

UNS S30815, STS308H, EN 1.4948, GB 06Cr21Ni11Ti, AISI 308H

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.