A387 Alloy Steel Plate, also referred to as A387 Alloy Steel Sheet, is a high-performance chromium-molybdenum alloy steel designed for use in elevated temperature and pressure environments. Manufactured to ASTM A387 specifications, this material demonstrates excellent resistance to heat and corrosion while maintaining stable mechanical properties.
All plates are produced under strict quality control and supplied with complete Mill Test Certificates (MTC), third-party inspection options (SGS, BV, TUV), and ISO-certified production processes. With balanced composition and strong weldability, our A387 Alloy Steel Plate is trusted for demanding industrial applications worldwide.
Key Features & Advantages
Superior creep resistance and thermal stability at high temperatures.
Enhanced resistance to oxidation and corrosion in aggressive environments.
Wide range of grades available (such as A387 Gr.11, Gr.12, Gr.22, Gr.91).
Excellent toughness and fatigue resistance after proper heat treatment.
Reliable international standard compliance with guaranteed traceability.
Applications
A387 Alloy Steel Plate is widely utilized in industries that require high-temperature strength and corrosion resistance, including:
Petrochemical processing plants and refineries
Boilers, pressure vessels, and heat exchangers
Power generation facilities (thermal and nuclear)
Industrial furnaces and high-temperature piping systems
Product Specifications & Technical Data
Basic Information
|
Item |
Details (Typical Range) |
|
Standard |
ASTM A387 / ASME SA387 |
|
Grades Available |
Gr.11, Gr.12, Gr.22, Gr.91 |
|
Thickness Range |
6 – 150 mm (customized) |
|
Width |
1000 – 3000 mm |
|
Length |
2000 – 12000 mm |
|
Yield Strength |
275 – 415 MPa (depending on grade) |
|
Tensile Strength |
485 – 620 MPa (depending on grade) |
|
Elongation |
≥ 18% |
|
Hardness |
170 – 220 HB (typical) |
|
Surface Finish |
Hot rolled, shot blasted, coated, polished |
Typical Chemical Composition (Gr.22 Example)
|
Element |
Content (%) |
|
Carbon (C) |
0.05 – 0.15 |
|
Silicon (Si) |
0.50 max |
|
Manganese (Mn) |
0.30 – 0.60 |
|
Phosphorus (P) |
≤ 0.035 |
|
Sulfur (S) |
≤ 0.035 |
|
Chromium (Cr) |
1.90 – 2.60 |
|
Molybdenum (Mo) |
0.87 – 1.13 |
Customization Services
Tailored dimensions and special thicknesses upon request.
CNC cutting, bending, drilling, and welding services available.
OEM/ODM support with customer drawings and design requirements.
Flexible MOQ, suitable for both trial orders and large-scale projects.
Price & Delivery
Competitive pricing with attractive discounts for bulk orders.
In-stock sizes ready for quick shipment.
Customized production lead time: 15–25 days depending on specifications.
Transparent quotation including material, processing, and logistics costs.
Our Strength
At Jiangsu Cunrui Metal Products Co., Ltd., we operate modern rolling and heat treatment facilities with high-capacity production lines. Our factory is ISO-certified and equipped with advanced testing laboratories. With more than 15 years of export experience, we deliver alloy steel plates to clients in Europe, America, the Middle East, and Asia with a reputation for reliability and consistency.
Service & Support
24/7 response to inquiries with professional technical consultation.
Export-standard packaging for sea, land, and air freight.
Strict pre-shipment inspection and third-party verification available.
Clear warranty policy: replacement or refund in case of quality issues.
Long-term after-sales support to ensure stable cooperation.
FAQ
Q1: Which grades of A387 Alloy Steel Plate are available?
A1: We supply Gr.11, Gr.12, Gr.22, Gr.91 and other grades upon request.
Q2: What industries commonly use A387 Alloy Steel Sheet?
A2: Mainly petrochemical, power generation, boiler manufacturing, and pressure vessel fabrication.
Q3: Do you provide third-party inspections?
A3: Yes, SGS, BV, TUV, or customer-designated inspection agencies are supported.
Q4: What is your standard delivery time?
A4: Stock sizes are shipped within 7–10 days; customized orders require 15–25 days.
Q5: Can you provide processing services?
A5: Yes, we offer cutting, bending, drilling, and welding to meet specific project requirements.
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