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ASME SA387 Gr.12 Cl.2 Alloy Steel Plates Premium Strength For High Pressure Vessel Boiler Construction

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ASME SA387 Gr.12 Cl.2 Alloy Steel Plates Premium Strength For High Pressure Vessel Boiler Construction

Brand Name : BAOSTEEL BENSTEEL HBIS XINGCHENG

Model Number : SA387 GR12 CL2

Certification : ISO 9001

Place of Origin : China

MOQ : 10 kgs

Price : 540 - 890 USD/Ton

Payment Terms : L/C, T/T, Western Union

Supply Ability : 20Ton per week

Delivery Time : 5 - 12 days based on the quantity

Packaging Details : standard packing for export

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

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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

  • Primary Standard: ASTM SA387 / ASME SA387

  • Delivery Condition: Class 2 (Normalized + Tempered)

  • Testing Compliance:

    • Tensile/Yield/Elongation: ASTM A370

    • Impact Test: ASTM A20 / ASTM E23

    • Ultrasonic Testing: ASTM A435 (Optional Level B)

  • Certificates:

    • EN 10204 3.1/3.2 Mill Test Report (MTR)

    • NACE MR0175 / ISO 15156 (Sour Service)

    • PED 2014/68/EU Annex I (CE Mark)

    • Material Traceability (Heat No., Melt Analysis)

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

  • Petrochemical:

    • Hydrocracker reactors, hydrogenation vessels

    • Catalytic reforming units, amine contactors

  • Power Generation:

    • Boiler drums (≤550°C), steam headers

    • Superheater supports, turbine casings

  • Oil & Gas:

    • Sour gas separators (NACE-compliant)

    • LNG heat exchanger shells

  • General Industry:

    • High-temperature storage tanks

    • Process piping & heat recovery systems

ASME SA387 Gr.12 Cl.2 Alloy Steel Plates Premium Strength For High Pressure Vessel Boiler ConstructionASME SA387 Gr.12 Cl.2 Alloy Steel Plates Premium Strength For High Pressure Vessel Boiler ConstructionASME SA387 Gr.12 Cl.2 Alloy Steel Plates Premium Strength For High Pressure Vessel Boiler Construction


Product Tags:

High Pressure Vessel Steel Plate

      

ASME SA387 Gr.12 Steel Plate

      

Boiler Construction Steel Plate

      
ASME SA387 Gr.12 Cl.2 Alloy Steel Plates Premium Strength For High Pressure Vessel Boiler Construction Manufactures

ASME SA387 Gr.12 Cl.2 Alloy Steel Plates Premium Strength For High Pressure Vessel Boiler Construction Images

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