ASTMA333Gr.6 seamless steel pipe
Material standards: ASTM American Society for Testing and Materials Specification for seamless welded steel pipes for low temperature service and other uses with notch toughness requirements. Chemical composition of ASTMA333Gr.6 seamless steel pipe: carbon: 0.30, silicon: 20.10, 029~1.06, phosphorus: 0025, 0.025, 0.030, 0.040: <0.12, copper: <0.40, vanadium: 0.08, 0.02 when When the carbon content is lower than 0.30%, for every 0.01% decrease, the manganese will increase by 0.05% based on 1.06%, preferably to 1.35%. Reasonable control of chemical composition is the key to ensuring pipeline quality. The ASTM A333 Gr.6 standard stipulates strict chemical composition requirements to ensure that the pipe has good strength and toughness.
The ASTM A333 Gr.6 standard specifies mechanical properties in detail, the most important of which are tensile strength, yield strength and elongation.
The following are the specific requirements for mechanical properties of the ASTM A333 Gr.6 standard: Tensile strength (Tensile strength): minimum 415 MPa Yield strength (Yield strength): minimum 240 MPa Elongation (Elongation): minimum 30%
Commonly used: Impact test temperature - 45°C
The above requirements can ensure that the pipe can be used normally in low temperature environments and has sufficient strength and toughness. Product specifications: outer diameter 21.3mm~762mm, wall thickness 2.0mm~140mm. Production method: hot rolling, cold drawing, hot expansion. Delivery status: heat treatment; steel pipe delivery status and heat treatment process. The steel pipe is delivered in a normalized heat treatment state. The normalized heat treatment process of the finished product is: 900C~930C insulation for 10~20min, air cooling.
