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ASME SA387 Gr.12 Cl.2 Alloy Steel Plates Premium Strength For High Pressure Vessel Boiler Construction
| Place of Origin | China |
|---|---|
| Brand Name | BAOSTEEL BENSTEEL HBIS XINGCHENG |
| Certification | ISO 9001 |
| Model Number | SA387 GR12 CL2 |
| Minimum Order Quantity | 10 kgs |
| Price | 540 - 890 USD/Ton |
| Packaging Details | standard packing for export |
| Delivery Time | 5 - 12 days based on the quantity |
| Payment Terms | L/C, T/T, Western Union |
| Supply Ability | 20Ton per week |
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xProduct Details
| Products | SA387 GR12 CL2 | Thickness | 3.0 - 200.0mm |
|---|---|---|---|
| Width | 1000-2200mm | Length | 2000-12000mm |
| Standard | ASTM EN GB | Other Material | Carbon Steel, Alloy Steel, Stainless Steel |
| Brand | BAOSTEEL XINYU XINGCHENG HBIS | Service | Cutting |
| Highlight | High Pressure Vessel Steel Plate,ASME SA387 Gr.12 Steel Plate,Boiler Construction Steel Plate |
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Product Description
ASME SA387 Gr.12 Cl.2 Alloy Steel Plates Premium Strength for High Pressure Vessel and Boiler Construction
Products Specification
| Product Name | SA387 GR12 CL2 Steel Plate |
| Thickness | 3mm~300mm,2mm-100mm is common thickness,also can customize |
| Width | 1000~3000mm,common width is 1250mm,1500mm,2000mm,2200mm |
| Length | 1000~12000mm,can as your request cut |
| Surface | Clean,finished, blasting and painting or as your request |
| Delivery | Hot Rolled, Controlled Rolling,Normalizing,Annealing, Tempering,Quanching, Q+T |
| Packing | Steel Strapping,fixing in the Container,can customize |
| Thickness tolerance | ±0.3mm |
| Application | It is mainly used to make structural parts such as car girder, beam, transmission shaft and car chassis parts, which can reduce the weight of the parts. |
SA387 Gr12 Cl2 Chromium-Molybdenum Alloy Steel Plate
For High-Temperature Pressure Vessels & Hydrogen Service
1. Introduction
SA387 Gr12 Cl2 is a low-alloy chromium-molybdenum steel plate standardized under ASTM/ASME SA387, designed for welded pressure vessels operating at elevated temperatures (up to 538°C / 1000°F). Supplied in Normalized and Tempered (N+T) condition (Class 2), it delivers superior creep strength, hydrogen resistance, and weldability for critical petrochemical, power, and oil/gas applications.
2. Chemical Composition (Weight %)
| Element | Min | Max | Key Role |
|---|---|---|---|
| Carbon (C) | – | 0.15 | Weldability, ductility |
| Manganese (Mn) | 0.30 | 0.60 | Deoxidation, strength |
| Phosphorus (P) | – | 0.025 | Purity control (impurity) |
| Sulfur (S) | – | 0.025 | Purity control (impurity) |
| Silicon (Si) | 0.15 | 0.40 | Deoxidizer, strength |
| Chromium (Cr) | 0.80 | 1.25 | Oxidation/hydrogen resistance |
| Molybdenum (Mo) | 0.45 | 0.65 | High-temp strength, carbide stability |
| Residuals (Cu, Ni, etc.) | – | ≤0.50 | Trace control |
Note: Strict control of P+S ≤ 0.035% minimizes hot cracking.
3. Mechanical Properties
| Property | Value (Typical) | Test Standard |
|---|---|---|
| Tensile Strength (Rm) | 515–690 MPa (75–100 ksi) | ASTM A370 |
| Yield Strength (Rp0.2) | ≥310 MPa (≥45 ksi) | ASTM A370 |
| Elongation (A5) | ≥22% (in 50 mm) | ASTM A370 |
| Hardness (Brinell HBW) | 163–220 | ASTM E10 |
| Impact Toughness | ||
| - Charpy V-Notch (min) | 27 J @ -30°C (-22°F) | ASTM A20 / EN 10045 |
| Elevated Temp Strength | ||
| - 550°C (1022°F) Design Stress | ~70 MPa (Ref: ASME II-D) | ASME Section II |
4. Product Standards & Certifications
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Primary Standard: ASTM SA387 / ASME SA387
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Delivery Condition: Class 2 (Normalized + Tempered)
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Testing Compliance:
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Tensile/Yield/Elongation: ASTM A370
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Impact Test: ASTM A20 / ASTM E23
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Ultrasonic Testing: ASTM A435 (Optional Level B)
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Certificates:
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EN 10204 3.1/3.2 Mill Test Report (MTR)
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NACE MR0175 / ISO 15156 (Sour Service)
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PED 2014/68/EU Annex I (CE Mark)
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Material Traceability (Heat No., Melt Analysis)
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5. Specification & Dimensions
| Parameter | Range | Tolerance |
|---|---|---|
| Thickness | 6 mm – 250 mm | ASTM A20/A20M |
| Width | 1500–4500 mm | EN 10029 Class N |
| Length | 6000–18000 mm | EN 10029 Class N |
| Form | Hot-rolled plate | |
| Surface Finish | Blasted (Sa 2.5) or mill finish | SSPC-SP 6 / ISO 8501-1 |
6. Equivalent Grades
| Country/Region | Equivalent Standard | Grade |
|---|---|---|
| China | GB/T 713.2 | 15CrMoR |
| EU | EN 10028-2 | 13CrMo4-5 (1.7335) |
| Japan | JIS G 4109 | SCMV2 |
| Germany | DIN 17155 | 15Mo3 (Close) |
| Russia | GOST 5520 | 15ХМ |
| ISO | ISO 9328-2 | P265GH (Partial) |
7. Applications
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Petrochemical:
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Hydrocracker reactors, hydrogenation vessels
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Catalytic reforming units, amine contactors
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Power Generation:
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Boiler drums (≤550°C), steam headers
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Superheater supports, turbine casings
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Oil & Gas:
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Sour gas separators (NACE-compliant)
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LNG heat exchanger shells
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General Industry:
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High-temperature storage tanks
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Process piping & heat recovery systems
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