Investment casting with Astm A126 Class B

Astm A126 Class B, which is a regular specification for gray iron castings used in valves, flanges, and pipe fittings.

Purpose and Application:
Astm A126 Class B gray iron castings are supposed for use as valve pressure retaining components, pipe fittings, and flanges.
These castings play a critical role in fluid control systems, ensuring safety and reliability.
Material Properties:
Gray steely castings in Class B exhibit particular automated properties.
The minimum tensile strength for Astm A126 Class B is 31 ksi (214 Mpa).
Chemical Composition:
The chemical analysis for Astm A126 Class B includes:
Carbon ©: Greatest 0. 75%
Sulfur (s): Maximum 0. 15%
Hardness:
The typical hardness range for gray steely castings in Class B is approximately 190-240 Hbs (hardness Brinell Scale).
Production Techniques:
Gray steely castings can be produced using various methods, including:
Sand Casting
Shell Casting
Lost Form Casting
Centrifugal Casting
Quality Assurance:
Stringent trial assures compliance with acceptance requirements.
Certifications contain Din Iso 9001, Iatf 16949, Ped, and the German tension vessel directive.