Common size on stock, Special sizes needs new production.Can cut to Size, Cut to Shape.
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1. Material Composition and Properties: ASTM A387 Gr22 is a chromium-molybdenum alloy steel containing approximately 2.25% chromium and 1.0% molybdenum. These elements significantly enhance the steel's high-temperature strength and corrosion resistance, making it suitable for demanding conditions such as hydrogen environments.
2. Application Areas: This steel is widely used in the petrochemical, oil and gas, and power generation industries. Its exceptional high-temperature and high-pressure resistance makes it an ideal material for pressure vessels and boilers.
3. Standard Compliance: The Gr22 designation indicates simultaneous compliance with both ASTM and ASME standards (ASME SA387 Gr22), ensuring adherence to stringent quality and safety requirements.
4. Heat Treatment: Properties of ASTM A387 Gr22 can be optimized through heat treatment processes like normalizing and tempering. These processes refine the grain structure to enhance mechanical properties, thereby improving toughness and durability.
5. Reliability: With its outstanding performance characteristics, ASTM A387 Gr22 maintains structural integrity and safety under extreme conditions, making it a dependable choice for critical applications.
Overall, ASTM A387 Gr22 serves as a high-performance material capable of meeting the demands of engineers and designers in demanding environments.
CATEGORY | STANDARD | GRADES AND MATERIALS | TECHNICAL PROPERTY IS ASSURED THICKNESS | UT TEST THICKNESS | CHEMICAL COMPOSITION IS ASSURED THICKNESS | DELIVERY CONDITION |
PRESSURE VESSEL AND BOILER STEEL PLATE | ASTM A387 | A387Gr11Cl1/Cl2、A387Gr12Cl1/Cl2 A387Gr22Cl1/Cl2 | 10～300 | 10～300 | 10～750 | N、N+T |
Production Dimension: Thickness: 10mm-750mm, width 1500mm-3700mm, length 3000mm-18000mm, the special sizes over this dimension can be produced by customization. Delivery Condition: when assuring the steel plate technical property, the steel plate can be delivered at hot rolled, controlled rolled, normalized, annealled, tempered, normalized and tempered, Q+T these delivery conditions. For the grades not shown in the material list, can send to the technical department for checking for production. | ||||||
A387Gr22Cl1 and A387Gr22Cl2 are chromium-molybdenum alloy steel plates mainly used for welding boilers and pressure vessels at high temperatures.
A387Gr22Cl1/Cl2 Grade Chemical Composition and Technical Property is as below：
Standard | C % | Si | Mn | P max | S max | Mo
| Cr | tensile strength（MPa） | yield strength（MPa） | Elongation% |
A387GR22CL1 | 0.15-0.17 | 0.15-0.4 | 0.4-0.65 | 0.035 | 0.035 | 0.45-0.6 | 0.8-1.15 | 380-550 | 230 | 22 |
A387GR22CL2 | 0.15-0.17 | 0.15-0.4 | 0.4-0.65 | 0.035 | 0.035 | 0.45-0.6 | 0.8-1.15 | 380-550 | 230 | 22 |
Oil and gas industry: A387Gr22Cl1 steel plate is widely used in the manufacture of welded pressure vessels and components in the petroleum, chemical, electric power, boiler and other industries, especially for equipment working in high temperature and high pressure environments.
Power industry: used in the manufacture of boiler walls, superheaters, reheaters and connecting pipes in thermal power stations.
Chemical industry: A387Gr22Cl1 steel plate is used in the chemical industry for the manufacture of various reactors, distillation towers and storage tanks operating under extreme conditions.
Nuclear industry: The steel plate can be manufactured for nuclear reactor components that must withstand high temperatures and radiation.
Shipbuilding and ocean engineering: A387Gr22Cl1 steel plate is also used in shipbuilding and ocean engineering fields that require high-performance pressure vessels.
Metallurgical industry: In the metallurgical industry, A387Gr22Cl1 steel plate is also used to manufacture high-performance pressure vessels.
Q: What is ASTM A387 Gr22? Is it carbon steel or alloy steel?
A: ASTM A387 Gr22 is a chromium-molybdenum low-alloy steel (2.25Cr-1Mo), not ordinary carbon steel. It contains approximately 2.25% chromium and 1% molybdenum, specifically designed for high-temperature, high-pressure environments such as boilers, pressure vessels, and petrochemical equipment. Compared to ordinary carbon steel, it offers superior high-temperature strength, creep resistance, and hydrogen corrosion resistance.
Q: What specifications do you offer? What are the maximum dimensions?
A: Stocked sizes: Thickness 10/12/16/20/25/30/40/50/60/80/100mm × Width 2000/2500mm
Custom Sizes: Extra-thick sheets (>100mm) and extra-wide sheets (>2500mm) require advance communication regarding delivery time.
Q: What is the delivery condition? What is the surface quality?
A: Delivery condition:Cl1: Hot-rolled or normalized condition;Cl2: Normalized + tempered (N+T), with heat treatment process curves provided.
Surface quality: Shot-blasted, coated with rust-preventive oil/primer.
Q: Can third-party inspections be conducted?
A: Re-inspection is supported: Customers may commission third parties (SGS, BV,etc.) to conduct random sampling inspections at the factory or pre-shipment inspections.
