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High Carbon 316H Stainless Steel Plate / UNS S31609 SS Plate Thickness 3.0 30.0mm Surface NO.1 2B
Place of Origin | China |
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Brand Name | TISCO BAOSTEEL |
Certification | ISO |
Model Number | 316H / S31609 |
Minimum Order Quantity | 500 kgs |
Price | 5000 - 7200 USD/Ton |
Packaging Details | standard packing for export |
Delivery Time | 5 - 12 days based on the quantity |
Payment Terms | T/T, Western Union |
Supply Ability | 20Ton per week |

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xProducts | Stainless Steel Plate | Grade | 316H / S31609 |
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Thickness | 0.6 - 30.0mm | Width | 1219mm 1500mm 1800mm 2000mm |
Surface | NO.1 2B | Brand | BAOSTEEL TISCO |
Standard | ASTM A240/240M | Loading Port | Shanghai Port |
Highlight | High Carbon 316H Stainless Plate,UNS S31609 Stainless Steel Plate,S31609 SS Plate |
High Carbon 316H Stainless Steel Platee / UNS S31609 SS Plate Thickness 3.0 - 30.0mm
Products Specification
Products Name | 317L Stainless Steel Plate |
Main Grades | Stainless Steel J1, J2, J4, 201, 202, 301, 304, 304H, 304L, 309, 309S, 310, 310S, 316, 316L, 316TI, 317L, 321, 321H, 347, 409, 410, 410S, 420, 430, 441, 904L,630,631,254SMO,654SMO,253MA,2205,2507.etc |
Thickness | 0.6 - 30.0mm |
Width | 1250mm,1500mm ,1800mm,2000mm, or custom other size as request |
Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, AS PER CUSTOMER’S REQUIREMENT |
Type of Material | Laser Cutting |
Form | Plate / coil |
Test Certificate | Yes. |
Finish | NO.1, 2B, 2D, 2H, 2R, No.4, HAIRLINE, SCOTCH BRITE, SATIN FINISH, NO.8, BA. |
Brand | TISCO, LISCO,BAOSTEEL , POSCO, JISCO |
316H Stainless Steel: A High-Temperature Austenitic Alloy
1. Definition & Key Distinction:
316H is a high-carbon variant of the popular 316 austenitic stainless steel. The "H" suffix denotes its suitability for high-temperature service (typically above 500°C / 932°F), where enhanced strength is required.
2. Chemical Composition (Typical):
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Carbon (C): 0.04–0.10% (Higher than standard 316/L to boost high-temperature strength).
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Chromium (Cr): 16–18% (Provides oxidation/corrosion resistance).
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Nickel (Ni): 10–14% (Maintains austenitic structure, improves ductility & corrosion resistance).
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Molybdenum (Mo): 2–3% (Key for pitting/crevice corrosion resistance, especially in chlorides).
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Manganese (Mn): ≤2%
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Silicon (Si): ≤1%
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Phosphorus (P): ≤0.045%
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Sulfur (S): ≤0.03%
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Iron (Fe): Balance
3. Key Properties & Advantages:
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Excellent High-Temperature Strength: Superior creep strength (resistance to slow deformation under stress at high temps) compared to 316/L due to controlled higher carbon content.
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Good Oxidation Resistance: Resists scaling in continuous service up to ~870°C (1600°F) and intermittent service up to ~925°C (1700°F).
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Superior Corrosion Resistance: Inherits excellent general corrosion and pitting/crevice corrosion resistance from its base 316 chemistry, particularly in chloride environments (thanks to Molybdenum).
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Austenitic Structure: Non-magnetic, good ductility, toughness, and formability in the annealed condition.
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Fabricability: Can be readily welded and formed using standard methods for austenitic stainless steels (though post-weld annealing is often recommended).
4. Trade-offs:
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Sensitization Risk: The higher carbon content increases susceptibility to sensitization (chromium carbide precipitation at grain boundaries) during welding or slow cooling through 425–815°C (800–1500°F). This can reduce corrosion resistance in the heat-affected zone. Solution annealing (rapid quenching from 1040–1150°C / 1900–2100°F) is crucial after high-temp exposure to dissolve carbides.
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Lower Corrosion Resistance than 316L: In severely corrosive environments, especially after welding, standard 316L (low carbon) is often preferred to avoid sensitization issues.
5. Primary Applications:
316H is specifically engineered for demanding elevated temperature environments requiring both corrosion resistance and mechanical strength:
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Power Generation: Boiler tubes, superheater tubes, heat exchangers, high-temperature piping in fossil fuel and nuclear plants.
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Chemical & Petrochemical Processing: Furnace parts, catalyst grids, reactor vessels, piping handling hot corrosive fluids.
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Heat Treating Equipment: Retorts, baskets, fixtures.
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Oil & Gas Refining: High-temp piping and components.
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Pressure Vessels designed for sustained high-temperature operation.
6. Common Specifications (Examples):
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ASTM A213 / ASME SA213 (Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes)
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ASTM A249 / ASME SA249 (Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes)
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ASTM A312 / ASME SA312 (Seamless and Welded Austenitic Stainless Steel Pipes)
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ASTM A358 / ASME SA358 (Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service)
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UNS S31609
7. Comparison Summary:
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vs. 316: Higher carbon (0.04-0.10% vs. max ~0.08%) for better high-temp strength.
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vs. 316L: Significantly higher carbon (316L max is 0.03%) for strength at temp, but greater sensitization risk. 316L excels where welding or maximum corrosion resistance is critical.
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vs. 316Ti/321: 316H relies on carbon for strength; 316Ti/321 use Titanium or Niobium to stabilize against sensitization (better for welded corrosive service, but may have slightly lower creep strength at very high temps).