ASTM A333:
This standard specifies the requirements for seamless and welded carbon and alloy steel pipes intended for low-temperature service. The pipes must be able to operate at temperatures as low as -45°C (-50°F) without compromising their integrity.
ASTM A106:
This standard covers seamless carbon steel pipes for high-temperature service. These pipes are suitable for high-pressure applications and are widely used in industries like oil and gas, refineries, and petrochemical plants.
This article will introduce the difference between ASTM A333 and ASTM A106 seamless steel pipes.
Characteristic |
ASTM A333 (Grade 6) |
ASTM A106 (Grade B) |
Intended Service |
Low-temperature service for temperatures below -45°C |
High-temperature service, suitable for boilers, pressure vessels |
Chemical Composition |
Carbon steel with alloying elements for low-temperature toughness |
Carbon steel, may vary for high-temperature strength and durability |
Mechanical Properties |
Superior notch toughness, durable at -452°F |
High tensile strength, toughness, and oxidation resistance |
Applications |
Cryogenic, refrigeration systems, and other low-temperature applications |
Gas and oil industry, water, heating, pipeline construction |
Temperature Limitation |
Designed for low-temperature operation, can withstand temperatures as low as -452°F |
Should not be used above 430°C due to mechanical property reduction |
Standard Specification |
ASTM A333/A333M-18 for low-temperature service |
ASTM A106/A106M-19a for high-temperature service |
Notable Characteristics |
Optimized for structural applications in cold environments |
Valued for high-temperature applications and durability |
Equivalent Material |
AISI 4032 low alloy steel (Note: Equivalent materials can vary based on specific applications and standards) |
ASTM A53 Grade B and API 5L Grade B |