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The 347H stainless steel plate is a high-grade, heat-resistant austenitic stainless steel alloy specially designed for high-temperature structural applications. With excellent resistance to intergranular corrosion and oxidation, 347H is an enhanced version of 347 stainless steel, containing higher carbon content for improved high-temperature strength. It is ideal for use in environments with prolonged exposure to elevated temperatures, making it widely adopted in petrochemical, power generation, and heat exchanger applications.
As a trusted stainless steel sheet supplier, we provide a full range of stainless steel plates, including 347H, as well as 304, 316L, 321, 904L, 2507, 253MA, and more.
Material Grades Available: 201, 304, 304L, 321, 316, 316L, 317L, 347H, 309S, 310S, 904L, S32205, 2507, 253MA, N08926, etc.
Thickness: 0.3mm – 150mm (SCH10 – XXS)
Length: 2000mm, 2500mm, 3000mm, 5800mm, 6000mm, 12000mm (custom sizes available)
Outer Diameter: 6mm – 2500mm (3/8″ – 100″)
Standards: ISO, JIS, ASTM, AS, EN
Certification: ISO9001, CE, SGS
Warranty: 2-year quality guarantee for all steel products
Edge Processing: Trimming, edging as required
| Property | Value |
| Tensile Strength | ≥ 520 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 40% |
| Hardness | ≤ 187HB / ≤ 90HRB / ≤ 200HV |
| Element | Content |
| Carbon (C) | ≤ 0.08 |
| Silicon (Si) | ≤ 1.0 |
| Manganese (Mn) | ≤ 2.0 |
| Chromium (Cr) | 18.0–20.0 |
| Nickel (Ni) | 8.0–10.5 |
| Sulfur (S) | ≤ 0.03 |
| Phosphorus (P) | ≤ 0.035 |
| Property | Value |
| Density | 8.03 g/cm³ |
| Elastic Modulus | 193 GPa |
| Thermal Expansion Coefficient | 16.9 × 10⁻⁶ /°C |
| Thermal Conductivity | 16.2 W/m·K |
| Electrical Resistivity | 72 µΩ·cm |
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