ASTM B564 and ASME SB564 are both specifications for forged fittings, flanges, valves, and parts that are made from nickel alloy materials.
ASTM B564 is a standard specification for nickel alloy forgings, whereas ASME SB564 is the ASME equivalent specification. Both specifications cover the requirements for fittings, flanges, valves, and other parts that are made from nickel alloy forgings, including materials like Inconel, Monel, and Hastelloy.
These specifications outline the manufacturing requirements, dimensions, and tolerances for nickel alloy forgings, as well as the mechanical properties and testing requirements. They also cover the marking, packaging, and certification requirements for these products.
Both ASTM B564 and ASME SB564 are widely used in the chemical, petrochemical, and power generation industries for applications that require high corrosion resistance and high-temperature performance.
The dimensions and tolerances specified in these standards depend on the type of product and its intended use. For example, the dimensions and tolerances for flanges will be different from those for fittings or valves.
Here are some general guidelines for the dimensions and tolerances specified in ASTM B564 and ASME SB564:
- Fittings: The dimensions and tolerances for fittings are specified in accordance with ASME B16.11, which covers socket weld and threaded fittings. The sizes range from 1/8″ to 4″ and the pressure ratings range from 2000 to 9000 psi.
- Flanges: The dimensions and tolerances for flanges are specified in accordance with ASME B16.5, which covers pipe flanges and flanged fittings. The sizes range from 1/2″ to 24″ and the pressure ratings range from 150 to 2500 psi.
- Valves: The dimensions and tolerances for valves are specified in accordance with the manufacturer’s standard or in accordance with the relevant API or ASME standards.
It is important to note that the dimensions and tolerances specified in ASTM B564 and ASME SB564 are minimum requirements and manufacturers may choose to exceed these requirements to meet specific customer needs or industry standards.