ASTM A333 Gr 6 is a specific grade of low temperature carbon steel pipe used in a variety of industrial applications. It is a seamless welded carbon and alloy steel pipe suitable for use at low temperatures, typically above -50°F (-45°C). The "Gr 6" designation refers to a grade of steel that meets the requirements of ASTM A333. Generally, A333-6 pipe is manufactured in sizes ranging from 1/2 inch to 24 inches.
This steel grade is commonly used in industries such as oil and gas, chemicals and power generation that require cryogenic services. A333 Gr 6 steel is designed to withstand brittle fracture and has excellent impact toughness, making it ideal for use in cold environments with temperatures up to -45°C. Impact testing is required for applications with A333-6 piping material below -45°C.
Chemical Composition of ASTM A333-6 Material
Carbon: 0.3% Max
Manganese: 0.29 to 1.06%
Phosphorus: 0.025% Max
Sulfur: 0.025% Max
Silicon: 0.1% Min
Nickel: 0.4% Max
Chromium: 0.3% Max
Copper: 0.4% Max
Vanadium: 0.08% Max
Columbium: 0.02% Max
Molybdenum: 0.12% Max
Mechanical properties of A333 Gr 6 Pipe Material
Minimum Tensile Strength: 415 MPa(60 ksi)
Minimum Yield Strength: 240 MPa (35 ksi)
Minimum Longitudinal Elongation in 2 inches (50mm): 30%
Minimum Transverse Elongation in 2 inches (50mm): 16.5%
Differences between A106-B and A333-6 pipe material?
A106 Gr B and A333 Gr 6 are two different grades of carbon steel pipes that are designed for different applications.
Temperature range: A106 Gr B pipes are designed to be used at high temperatures and pressures, while A333 Gr 6 pipes are designed for use at low temperatures.
