316H – High-Carbon Austenitic Steel: High-Temperature Creep Resistance Specialist

Overview

316H is a high-carbon austenitic stainless steel, engineered for high-temperature applications requiring exceptional creep strength and oxidation resistance. With a carbon content of 0.04-0.10%, it delivers higher high-temperature mechanical stability compared to 316 and 316L, enabling continuous service at temperatures above 595°C. It retains the molybdenum (2.00-3.00%) addition for corrosion resistance and maintains a stable austenitic structure through 16.00-18.00% chromium and 10.00-14.00% nickel. Non-magnetic and weldable with proper preheating, 316H is widely used in high-temperature industrial equipment where creep deformation is a critical concern.

Chemical Composition (wt%)

C: 0.04-0.10, Si ≤ 1.00, Mn ≤ 2.00, P ≤ 0.045, S ≤ 0.030, Cr: 16.00-18.00, Ni: 10.00-14.00, Mo: 2.00-3.00, N ≤ 0.10

Typical Mechanical Properties (Annealed Condition)

Tensile Strength (Rm): ≥ 520 MPa; Yield Strength (Rp0.2): ≥ 205 MPa; Elongation (A): ≥ 35%; Brinell Hardness (HB): ≤ 201

Core Advantages

High carbon content enhances high-temperature creep strength and dimensional stability; excellent oxidation resistance at elevated temperatures (up to 700°C continuous service); molybdenum ensures chloride corrosion resistance; non-magnetic; good weldability with preheating; suitable for high-temperature pressure vessels.

Applications

High-temperature boilers, industrial heat exchangers, steam turbines, petrochemical cracking equipment, nuclear power plant components, and high-temperature piping systems.

Equivalent Grades

UNS S31609, STS316H, SUS316H, EN 1.4406, GB 07Cr17Ni12Mo2

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.
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