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Industrial-Grade 316H Stainless Steel Plate Superior Creep Resistance & Durability
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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
Industrial-Grade 316H Stainless Steel Plate Superior Creep Resistance & Durability
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 |
Industrial-Grade 316H Stainless Steel Plate – Superior Creep Resistance & Durability for Demanding High-Temperature Environments
Product Overview
Industrial-grade 316H stainless steel plate is a premium austenitic alloy engineered specifically for long-term structural integrity in high-temperature, high-stress industrial applications. Designated by the “H” suffix (per ASTM A240/ASME SA-240), this grade features a controlled carbon content of 0.04–0.10%, which dramatically enhances creep strength, stress-rupture resistance, and microstructural stability at operating temperatures between 550°C and 750°C (1022°F–1382°F).
Widely specified in power generation, petrochemical refining, nuclear energy, and industrial furnace systems, 316H delivers unmatched durability where standard 316 or 316L would rapidly degrade under thermal creep or corrosive attack.
Manufactured to stringent industrial standards and supplied in hot-rolled, solution-annealed condition, this plate ensures consistent performance, weldability, and compliance with global pressure equipment codes.
Why 316H? The Industrial Advantage
- Superior creep resistance—critical for components under constant load at high temps
- Excellent corrosion protection—thanks to 2–3% molybdenum and 16–18% chromium
- Code-approved material—fully compliant with ASME BPVC, ASTM A240, and PED
- Enhanced mechanical strength at elevated temperatures vs. low-carbon grades
- Proven in extreme service—from nuclear reactors to sulfur recovery units
Unlike general-purpose stainless steels, industrial-grade 316H is purpose-built for mission-critical infrastructure where failure is not an option.
Chemical Composition (UNS S31609 / ASTM A240)
| 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 (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 |
| Modulus of Elasticity (RT) | ～193 GPa |
All plates are supplied with EN 10204 3.1 Mill Test Reports, including certified chemistry and mechanical test data.
Creep & Rupture Performance – The Core Strength
The defining feature of 316H is its exceptional resistance to time-dependent deformation (creep) under load at high temperatures—a critical factor in pressure vessels, headers, and piping systems.
Approximate 10,000-Hour Rupture Strength
| Temperature | Stress to Cause Rupture |
|---|---|
| 600°C | ～80 MPa |
| 650°C | ～55 MPa |
| 700°C | ～35 MPa |
| 750°C | ～20 MPa |
Source: ASME Boiler & Pressure Vessel Code, Section II, Part D
This performance enables safe, long-life operation in:
- Superheater outlet headers
- Steam generator tubesheets
- Reactor vessel internals
- High-pressure reformer tubes
Corrosion Resistance in Harsh Industrial Media
316H’s alloying elements provide robust defense against:
- Chloride-induced pitting (e.g., coastal plants, desalination)
- Sulfidic corrosion in sour crude oil and gas processing
- Organic acids (acetic, formic) in chemical synthesis
- Oxidizing flue gases in waste incineration and power boilers
While not a super-austenitic grade, 316H significantly outperforms 304H and carbon steel in aggressive environments—offering a cost-effective balance of performance and longevity.
Key Industrial Applications
| Sector | Typical Components |
|---|---|
| Thermal Power | Main steam piping supports, boiler drum baffles, reheater headers |
| Nuclear Energy | Intermediate heat exchangers, sodium circuit components (fast reactors) |
| Oil & Gas Refining | Hydrocracker reactors, coker drums, sulfur recovery unit (SRU) ducting |
| Chemical Processing | High-temp reactor shells, acid condenser plates, distillation column trays |
| Industrial Furnaces | Radiant tubes, retort fixtures, burner nozzles |
Fabrication & Welding Best Practices
- Forming: Excellent ductility allows cold bending; anneal after severe deformation.
- Machining: Moderate difficulty—use sharp tools, low speeds, and ample coolant to counter work hardening.
- Welding:
- Use matching filler (e.g., ER316H) or low-carbon (ER316L) for thin sections.
- Maintain interpass temperature <150°C (300°F).
- Avoid prolonged exposure in 425–860°C (800–1600°F) to prevent sensitization.
- Heat Treatment: Solution anneal at 1040–1150°C (1900–2100°F), followed by rapid quenching
Product Specifications & Availability
| Parameter | Details |
|---|---|
| Standard | ASTM A240, ASME SA-240 |
| Grade | 316H (UNS S31609) |
| Condition | Hot-rolled, solution annealed & quenched |
| Thickness | 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 finish |
| Certification | EN 10204 3.1, PMI available, UT optional per ASTM A578 |
| Packaging | Export-ready: VCI paper, steel banding, wooden skids |
Custom services: precision cutting, beveling, hole drilling, and ultrasonic testing.
Quality Assurance & Traceability
- Full heat traceability from melt to delivery
- Spectrometric analysis (ICP-OES) for chemistry verification
- Mechanical testing per ASTM E8/E18
- Optional ultrasonic inspection for internal laminations or voids
- ISO 9001:2015 certified manufacturing process
316H vs. Common Industrial Alternatives
| Grade | Carbon (%) | Creep Strength | Corrosion Resistance | Best Use Case |
|---|---|---|---|---|
| 316H | 0.04–0.10 | ★★★★☆ | ★★★★☆ | High-temp + moderate corrosion |
| 316L | ≤0.03 | ★★☆☆☆ | ★★★★☆ | Welded corrosion service (<400°C) |
| 304H | 0.04–0.10 | ★★★☆☆ | ★★☆☆☆ | Non-chloride high-temp service |
| 321H | ～0.08 | ★★★★☆ | ★★★☆☆ | Stabilized welding service |
| 347H | ～0.08 | ★★★★☆ | ★★★★☆ | High-temp stabilized (niobium) |
316H remains the optimal choice when both elevated-temperature strength and chloride resistance are required.
Global Compliance
- ASTM A240/A240M
- ASME SA-240 (Section II, Part A)
- UNS S31609
- AISI 316H
- ISO 15510
- PED 2014/68/EU compliant
- Accepted by TÜV, DNV, ABS, Lloyd’s Register, and major EPC firms
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