Home > Steel Plate >

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

Product Categories

JIANGSU MITTEL STEEL INDUSTRIAL LIMITED

Trust Seal

Verified Supplier

Credit Check

Supplier Assessment

Contact Now

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

Name: ASME SA387 Gr12 Cl2 Alloy Steel Plates Premium Strength For High Pressure Vessel Boiler Construction
Brand: BAOSTEEL BENSTEEL HBIS XINGCHENG
Price: 540 USD

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

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

Contact Now

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 Construction

Product Tags: