316H – High-Carbon Molybdenum Steel: High-Temp Creep Resistant Specialist

Overview

316H is a high-carbon austenitic stainless steel, engineered for high-temperature applications requiring exceptional creep strength and corrosion resistance. With a carbon content of 0.04-0.10%, it offers superior high-temperature mechanical stability compared to 316 and 316L, enabling continuous service above 595°C. It retains 2.00-3.00% molybdenum for chloride corrosion resistance, along with 16.00-18.00% Cr and 10.00-14.00% Ni to maintain a stable austenitic structure (non-magnetic in annealed state). This grade is weldable with proper preheating and is widely used in high-temperature industrial equipment, including nuclear power components, 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; molybdenum ensures chloride corrosion resistance; excellent high-temperature oxidation resistance (up to 700°C); non-magnetic; good weldability with preheating; suitable for nuclear and petrochemical high-temperature equipment.

Applications

Nuclear power plant components, high-temperature boilers, steam turbines, petrochemical cracking equipment, industrial heat exchangers, 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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