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Hot-Rolled 316H Stainless Steel Plate Enhanced Strength for Elevated Temperature Service
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xProduct Details
| Products | Stainless Steel Plate | Grade | 316H |
|---|---|---|---|
| Thickness | 1.5-50.0mm | Tech | Cold Rolled,hot Rolled , Forged |
| Width | 1000mm 1219mm 1500mm Or Customs As Request | Surface | 2B NO.1 |
| Standard | ASTM GB JIS EN DIN | MOQ | 1 Ton |
Product Description
Hot-Rolled 316H Stainless Steel Plate Enhanced Strength for Elevated Temperature Service
Stainless Steel Plate Specifications
| Name | 316H stainless steel Plate |
| Our Grade |
200 Series: 201 202 300 Series: 301 304,304L,304H,309S,310S,314,316L,316Ti,316H,316LN,317L,321,329,347 400 Series: 409L,410,410S,416,420,430,431,436L.439,441,443,444,445,446 Super Stainless Steel: 904L,926,254SMO,654SMO,15-5PH,17-4PH,17-7PH.etc Nickel Alloy: C276, C22,G35,Alloy X,Monel 400,K500,Inconel 600,601,617,625,718,Incoloy 800,800H,800HT,825.etc |
| Technique | Hot Rolled, Cold Rolled,Forged |
| Standard | JIS, AISI, ASTM, DIN, TUV, BV, SUS, etc |
| Thickness | 0.1 – 80.0mm |
| Width range | 10mm – 2000mm |
| Length | Customized |
| Finish | 2B, BA, No.4, 8k, Brushed,Hairline,PVD Coating,Sandblasted |
| Service | Laser Cutting, Bending |
| Sample | Available |
Hot-Rolled 316H Stainless Steel Plate – Enhanced Strength for Elevated Temperature Service
Product Introduction
Hot-rolled ASTM A240 316H stainless steel plate is a high-performance austenitic alloy engineered specifically for elevated-temperature structural applications where long-term strength, oxidation resistance, and corrosion protection are critical. The “H” designation signifies a controlled higher carbon content (0.04–0.10%), which significantly boosts creep and stress-rupture resistance above 500°C (932°F)—making it indispensable in power generation, petrochemical refining, and industrial heating systems.
Manufactured via hot-rolling processes followed by solution annealing and rapid quenching, this plate delivers uniform microstructure, excellent dimensional stability, and superior mechanical properties—ideal for pressure vessels, boiler components, heat exchangers, and reactor internals operating under sustained thermal loads.
Why Choose Hot-Rolled 316H?
- Optimized for high-temp service: Superior creep strength vs. 316/316L
- Robust corrosion resistance: Molybdenum-enhanced protection against chlorides and acids
- Hot-rolled integrity: Dense grain structure with minimal internal stress
- Code-compliant: Fully meets ASTM A240, ASME SA-240, and PED requirements
- Globally trusted: Used in nuclear plants, refineries, and combined-cycle power facilities
Unlike cold-rolled variants, hot-rolled 316H offers better toughness and homogeneity in thick sections (typically 6 mm and above), making it the preferred choice for heavy industrial fabrication.
Chemical Composition (ASTM A240 / UNS S31609)
| Element | Weight % (Typical Range) |
|---|---|
| Carbon (C) | 0.04 – 0.10 |
| Chromium (Cr) | 16.0 – 18.0 |
| Nickel (Ni) | 10.0 – 14.0 |
| Molybdenum (Mo) | 2.0 – 3.0 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 0.75 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Iron (Fe) | Balance |
Mechanical Properties (As-Supplied, Solution Annealed Condition)
| Property | Minimum Requirement |
|---|---|
| Tensile Strength | 515 MPa (75,000 psi) |
| Yield Strength (0.2% offset) | 205 MPa (30,000 psi) |
| Elongation | ≥ 40% (in 50 mm) |
| Hardness | ≤ 95 HRB |
| Density | 8.0 g/cm³ |
| Thermal Conductivity (100°C) | ～16.3 W/m·K |
All plates undergo full mechanical testing per ASTM standards and are supplied with EN 10204 3.1 Mill Test Reports.
High-Temperature Performance Data
Hot-rolled 316H excels where standard stainless steels degrade:
| Parameter | Performance Limit |
|---|---|
| Continuous Oxidation Resistance | Up to 870°C (1600°F) |
| Intermittent Service | Up to 925°C (1700°F) |
| Creep-Critical Operating Range | 550°C – 750°C (1022°F – 1382°F) |
Approximate 10,000-Hour Rupture Strength
| Temperature | Stress to Rupture |
|---|---|
| 600°C | ～80 MPa |
| 650°C | ～55 MPa |
| 700°C | ～35 MPa |
| 750°C | ～20 MPa |
Data aligned with ASME Section II, Part D design stress tables.
Corrosion Resistance Profile
Thanks to its 2–3% molybdenum and 16–18% chromium, hot-rolled 316H offers outstanding resistance to:
- Pitting & crevice corrosion in chloride environments (e.g., seawater, process brines)
- Organic and mineral acids (acetic, formic, phosphoric)
- Sulfidic corrosion in sour oil & gas service
- Oxidizing atmospheres in incinerators and furnaces
While not recommended for prolonged seawater immersion without cathodic protection, it outperforms 304/304H in nearly all aggressive chemical settings.
Target Applications
| Industry | Key Components |
|---|---|
| Fossil Fuel Power | Superheater headers, steam drums, boiler baffles, flue gas ducts |
| Nuclear Energy | Sodium-cooled fast reactor internals, heat exchanger plates |
| Petrochemical | Crude distillation units, hydroprocessing reactors, sulfur recovery units |
| Industrial Heating | Furnace rollers, radiant tubes, retort components |
| Waste-to-Energy | Combustion chambers, heat recovery surfaces |
Fabrication & Processing Guidelines
- Hot Rolling Advantage: Produces plates with refined grain flow, ideal for thick-section welding and high-load applications.
- Welding: Use low heat input; filler metals such as ER316H or ER316L (for thin sections). Avoid sensitization by minimizing time in 425–860°C range.
- Forming: Excellent ductility allows cold bending; anneal after severe deformation (>20% strain).
- Machining: Moderate difficulty—use rigid setups, sharp carbide tools, and ample coolant.
- Heat Treatment: Solution anneal at 1040–1150°C (1900–2100°F), followed by water or rapid air quench.
Available Specifications
| Feature | Details |
|---|---|
| Standard | ASTM A240 / ASME SA-240 |
| Grade | 316H (UNS S31609) |
| Process | Hot-rolled, solution annealed & quenched |
| Thickness Range | 6 mm to 150 mm (0.25" to 6") |
| Width | Up to 3000 mm (118") |
| Length | Up to 12,000 mm (472") |
| Surface Finish | Hot-rolled annealed & pickled (HRAP), No. 1, or descaled |
| Certification | EN 10204 3.1, PMI, UT optional |
| Packaging | Waterproof VCI paper, steel-strapped wooden crates, export-ready |
Custom cutting (plasma, oxy-fuel, waterjet), beveling, and ultrasonic testing available upon request.
Quality & Traceability
- Full melt traceability from raw material to final product
- Spectrometric chemical verification (ICP-OES)
- Tensile, hardness, and bend testing per ASTM
- Optional ultrasonic testing (UT) per ASTM A435/A578 for critical applications
- ISO 9001:2015 certified production system
Comparison: Hot-Rolled 316H vs. Alternatives
| Material | Best For | Limitation in High-Temp Service |
|---|---|---|
| 316H (HR) | Creep strength >550°C | Requires controlled welding |
| 316L (HR) | Corrosion + welding | Low carbon = poor creep resistance |
| 304H (HR) | General high-temp use | No Mo = vulnerable to pitting |
| 321H | Stabilized welding service | Lower Mo; titanium inclusions possible |
For applications demanding both high-temperature strength and moderate corrosion resistance, hot-rolled 316H offers the best balance of performance, availability, and cost.
Standards & Approvals
- ASTM A240/A240M
- ASME SA-240 (BPVC Section II)
- UNS S31609
- AISI 316H
- ISO 15510
- PED 2014/68/EU compliant
- Accepted by TÜV, DNV, ABS, and major EPC contractors
Conclusion
Hot-rolled 316H stainless steel plate is the material of choice for engineers designing systems that must endure decades of service under extreme thermal and chemical stress. Its enhanced carbon content, combined with the structural integrity of hot-rolled processing, delivers unmatched reliability in the world’s most demanding energy and industrial environments.
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