ASTM A387 Grade 5 Class 1 is a high-quality chromium-molybdenum alloy steel plate primarily used for weldable pressure vessels and industrial boilers designed for elevated temperature service.
chemical composition:
|
Grade |
C max |
Mn |
Si max |
P max |
S max |
Cr |
Mo |
|
A387 Grade 5 Class 1 |
0.15 |
0.25-0.66 |
0.55 |
0.025 |
0.025 |
3.90-6.10 |
0.40-0.70 |
mechanical properties:
|
Grade |
Tensile Strength(MPa) |
Yield Strength(MPa) min |
% Elongation in 2 in.(50mm) min |
Impacting Test Temperature(°C) |
|
A387 Grade 5 |
415-585 |
205 |
18 |
-20,40,-60 |
Applications
Petrochemical Industry: Serves as a key material for fabricating reactors, pressure vessels, and storage tanks that handle high-temperature, high-pressure process fluids, maintaining structural integrity under cyclic thermal stress and corrosive media exposure.
Power Generation: Acts as the core material for boilers, heat exchangers, and associated piping in thermal and industrial power plants, withstanding prolonged high-temperature steam conditions to ensure efficient heat transfer and stable operation.
Oil & Gas: Performs exceptionally in sour service environments containing hydrogen sulfide (H₂S), manufacturing drill collars and transmission pipelines that resist sulfide stress corrosion cracking for safe onshore and offshore operations.
Chemical Processing: Constructs specialized equipment for handling aggressive acids including concentrated citric and sulfuric acid solutions, leveraging its chromium-molybdenum alloy composition to deliver reliable corrosion resistance.
Industrial Boilers: Enables the fabrication of heavy-duty industrial boilers requiring continuous elevated-temperature service, meeting stringent pressure-bearing and safety standards for diverse industrial heating systems.
Key Advantages:
High-Temperature Performance: Maintains strength and structural integrity at elevated temperatures, crucial for industrial processes.
Corrosion & Oxidation Resistance: The chromium and molybdenum content provides enhanced resistance to oxidation and corrosive environments, extending component life.
Excellent Weldability: Low carbon content allows for easy fabrication and welding without compromising mechanical properties, reducing fabrication costs.
Formability: Can be formed into complex shapes, offering versatility for diverse applications.
Durability & Reliability: High tensile strength, yield strength, and toughness ensure it withstands operational stresses, leading to longer service life and reduced downtime.
Cost-Effectiveness: Its durability and resistance to harsh conditions mean less frequent replacements and lower long-term maintenance costs.
Full specification and details are available on request. The above information is provided for guidance purposes only. For specific design requirements please contact our technical sales staff.
What is the ASTM A387 equivalent to?
Among the ASTM A387 Grade 22 equivalent steel grades, SA387 Grade 22, 10CrMo9-10 is more popular than other equivalents. SA387 Grade 22 steel is under ASME SA387/ SA387M standard. The chemical performance and technical requirements of SA387 Grade 22 steel is almost same with ASTM A387 Grade 22 steel.
What is ASTM A387 GRADE 5 CLASS 1 material?
ASTM A387 Grade 5 Class 1 is a chromium-molybdenum (5Cr-0.5Mo) alloy steel plate designed for weldable pressure vessels and boilers operating at high temperatures