Yield Strength of A671 CC60
The yield strength of A671 CC60 is 220 MPa minimum. ASTM A671 Grade CC60 is a carbon steel pipe with a tensile strength of 415 to 550 MPa, manufactured from pressure-vessel plate equivalent to ASTM A516 Grade 60 by the electric fusion welding (EFW) process, for high-pressure service in atmospheric and low-temperature conditions.
Yield Strength of A671 CC65
The yield strength of A671 CC65 is 240 MPa minimum, with a tensile strength of 450 to 585 MPa. The welding point tensile strength matches the base metal requirement, confirming full weld integrity. Both grades share the same carbon-manganese-silicon steel family, differing in strength level.
What Is A671 Pipe
ASTM A671 steel pipes are specialized pipes produced using electric fusion welding, designed for atmospheric and lower temperature pressure applications. They are formed from steel plate, welded longitudinally, and supplied in a range of classes defining heat treatment and testing requirements. In modern industry, selecting the correct pipe material plays a critical role in ensuring safety and reliability, and A671 is a standard choice for large-diameter pressure piping in oil, gas, petrochemical, and power applications.
Material Characteristics
The A671 Gr. CC60 pipe is made mainly of carbon, silicon, manganese, phosphorus, and sulfur, with a fine-grain killed steel plate base. The material is designed with excellent ductility and weldability, and possesses good toughness and strength. The electric fusion weld is fully penetrated and tested to the same strength level as the base metal.
Grade Selection
CC60 is selected where a minimum yield of 220 MPa is sufficient; CC65 for 240 MPa; and CC70 for 260 MPa, each with a corresponding increase in tensile strength. The class designation defines the heat treatment, such as as-welded, normalized, or quenched and tempered, and the extent of testing required by the project specification.
Frequently Asked Questions
Q: What is the yield strength of A671 CC60?
A: The minimum yield strength is 220 MPa, with a tensile strength of 415 to 550 MPa and a minimum elongation of 25 percent.
Q: What is the yield strength of A671 CC65?
A: The minimum yield strength is 240 MPa, with a tensile strength of 450 to 585 MPa.
Q: What plate is A671 CC60 made from?
A: It is made from pressure-vessel plate equivalent to ASTM A516 Grade 60, a fine-grain killed carbon steel.
Q: What does EFW mean?
A> Electric fusion welding, a process in which the plate edges are fused by an electric arc, typically submerged arc welding, to form the longitudinal seam.
Q: What is the difference between CC60, CC65, and CC70?
A: They are the same steel family with increasing strength levels: 220, 240, and 260 MPa minimum yield respectively.
Q: Where is A671 pipe used?
A: In oil and gas, petrochemical, and power generation piping for atmospheric and lower temperature pressure service.
For A671 pipe quotations with your required grade, class, and size, contact our sales team.
