316H stainless steel plate
Dec 02, 2025
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Chemical Composition of Type 316H
| UNS No | S31603 |
| EN | 1.4401 |
| AISI | 316H |
| Carbon (C) | 0.04/0.10 |
| Silicon (Si) | 0.75 |
| Manganese (Mn) | 2.00 |
| Phosphorus (P) | 0.045 |
| Sulphur (S) | 0.030 |
| Chromium (Cr) | 16.00 – 18.00 |
| Molybdenum (Mo) | 2.00/3.00 |
| Nickel (Ni) | 10.00 – 14.00 |
Q: What is 316H stainless steel plate?
A: High-carbon austenitic stainless steel (16-18% Cr, 10-14% Ni, 2-3% Mo, 0.04-0.10% C), designed for enhanced high-temperature strength while retaining 316's excellent corrosion resistance.
Q: What are its key mechanical properties?
A: Tensile strength: 515-700 MPa; Yield strength: ≥205 MPa; Elongation: ≥40%; Hardness (HB): ≤217; Excellent creep resistance at elevated temperatures.
Q: What applications is it ideal for?
A: High-temperature industrial equipment, boiler components, heat exchangers, petrochemical pipelines, and high-pressure systems operating at 400-800°C.
Q: Which international standards govern it?
A: ASTM A240 316H, JIS G4305 SUS316H, GB/T 3280 07Cr17Ni12Mo2, EN 10088-2 X7CrNiMo17-12-2.
Q: How does it differ from 316 and 316L stainless steel?
A: 316H has higher carbon (0.04-0.10% vs. ≤0.08% for 316, ≤0.03% for 316L), superior high-temperature strength/creep resistance, but lower resistance to intergranular corrosion after welding compared to 316L.
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