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ASTM A240 316H Stainless Steel Plate for Petrochemical & Power Generation Applications
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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
ASTM A240 316H Stainless Steel Plate for Petrochemical & Power Generation Applications
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 |
ASTM A240 316H Stainless Steel Plate – Engineered for Petrochemical & Power Generation Applications
Product Overview
ASTM A240 316H stainless steel plate is a high-carbon variant of the widely used 316 austenitic stainless steel, specifically formulated to deliver exceptional mechanical strength and structural stability at elevated temperatures. Compliant with the ASTM A240/A240M standard—the benchmark specification for pressure vessel and high-temperature service materials—316H is indispensable in the petrochemical, oil & gas, nuclear, and fossil-fuel power generation industries, where reliability under extreme thermal and corrosive stress is non-negotiable.
Unlike standard 316 (UNS S31600), 316H (UNS S31609) contains a controlled carbon content of 0.04–0.10%, which significantly enhances its creep resistance and long-term strength above 500°C (932°F)—making it ideal for critical components exposed to sustained high-temperature operation.
Why ASTM A240 316H? Key Advantages
- ✅ Superior high-temperature strength vs. 316/316L
- ✅ Excellent resistance to oxidation up to 870°C (1600°F)
- ✅ Outstanding corrosion resistance in chloride, acidic, and sulfidic environments
- ✅ Full compliance with ASME BPVC Section II for pressure-retaining parts
- ✅ Weldable with proper procedures—retains integrity in post-weld high-temp service
Chemical Composition (ASTM A240 / UNS S31609)
| Element | Requirement (Weight %) |
|---|---|
| Carbon (C) | 0.04 – 0.10 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Silicon (Si) | ≤ 0.75 |
| Chromium (Cr) | 16.0 – 18.0 |
| Nickel (Ni) | 10.0 – 14.0 |
| Molybdenum (Mo) | 2.0 – 3.0 |
| Iron (Fe) | Balance |
Mechanical Properties (Per ASTM A240)
| 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 |
All plates are supplied with Mill Test Reports (EN 10204 3.1) verifying chemistry and mechanical test results.
Performance in Target Industries
1. Petrochemical & Refining Applications
In refineries and chemical plants, equipment faces aggressive media such as:
- Hydrogen sulfide (H₂S)
- Sulfuric and hydrochloric acids
- Chloride-laden process streams
316H excels in:
- Reactor shells and internals
- Heat exchangers and reboilers
- Distillation columns
- Sour gas service piping supports
Its molybdenum content (2–3%) provides critical resistance to pitting and crevice corrosion—especially vital in coastal or offshore facilities.
2. Power Generation
In power plants, components operate continuously at high temperatures under pressure. 316H is specified for:
- Superheater and reheater headers
- Steam generator tubesheets
- Boiler baffles and support structures
Thanks to its high creep-rupture strength, 316H maintains dimensional stability over decades of service—reducing maintenance costs and unplanned outages.
High-Temperature Capabilities
| Service Condition | Maximum Temperature |
|---|---|
| Continuous Oxidizing | 870°C (1600°F) |
| Intermittent Oxidizing | 925°C (1700°F) |
| Creep-Critical Service | 550–750°C (1022–1382°F) |
Creep Rupture Strength (Approximate):
- At 700°C: ～35 MPa for 10,000 hours
- At 650°C: ～55 MPa for 10,000 hours
Source: ASME Boiler & Pressure Vessel Code, Section II, Part D
Fabrication Guidelines
- Welding: Use low heat input; filler metals like ER316H or ER316L (for thin sections). Post-weld heat treatment is typically unnecessary but may be applied in severe corrosion service.
- Forming: Excellent cold-forming capability; anneal after severe deformation (>20% reduction).
- Machining: Requires sharp tools, slow speeds, and ample coolant due to work-hardening tendency.
- Heat Treatment: Solution anneal at 1040–1150°C (1900–2100°F), followed by rapid quenching.
⚠️ Avoid prolonged exposure between 425–860°C (800–1600°F) to prevent sensitization unless stabilized alternatives are required.
Available Product Specifications
| Parameter | Options |
|---|---|
| Standard | ASTM A240, ASME SA-240 |
| Grade | 316H (UNS S31609) |
| 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 | 2B, No. 1, BA, Pickled & Annealed |
| Certification | EN 10204 3.1 MTR, PMI available |
| Testing | UT (Ultrasonic), ICP-OES chemistry, tensile tests |
Custom cutting (plasma, laser, waterjet), beveling, and machining services available.
Quality Assurance
Our ASTM A240 316H plates are manufactured under ISO 9001:2015-certified processes, with full traceability from raw material to finished product. Every heat is:
- Spectrometrically analyzed
- Mechanically tested per ASTM standards
- Visually and dimensionally inspected
- Packaged for international shipment with moisture barriers
Comparison: 316H vs. Common Alternatives
| Grade | Carbon (%) | Best For | Limitations |
|---|---|---|---|
| 316H | 0.04–0.10 | High-temp strength (>500°C) | Not ideal for severe welding without controls |
| 316L | ≤0.03 | Welded corrosion service | Lower creep strength |
| 321 | ～0.08 | Stabilized for welding | Lower Mo = less pitting resistance |
| 347 | ～0.08 | High-temp stabilized | Higher cost, niobium inclusion risks |
For petrochemical reactors or power plant headers operating above 550°C, 316H remains the optimal balance of cost, performance, and code acceptance.
Global Compliance & Standards
- ASTM A240/A240M
- ASME SA-240 (Section II, Part A)
- UNS S31609
- AISI 316H
- ISO 15510: X2CrNiMo17-13-3 (adjusted C)
- Pressure Equipment Directive (PED 2014/68/EU) compliant
Accepted by major EPC firms and inspection agencies worldwide (TÜV, DNV, ABS, etc.).
Conclusion
When your application demands uncompromising performance in high-temperature, high-corrosion environments, ASTM A240 316H stainless steel plate delivers proven reliability across the most demanding sectors of energy and chemical processing. Backed by rigorous quality control, global certifications, and decades of field validation, it remains a cornerstone material for engineers designing systems that must perform safely for decades.
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