Steel castings conforming to ASTM requirements*

Designation Properties and information on application
ASTM A 216
Grade WCA
Steel castings used in valves, pumps and other parts subjected to pressure; suitable for weld-joining and temperatures up to around 450 °C
ASTM A 216
Grade WCB
ASTM A 216
Grade WCC
ASTM A 217
Grade WC 1
As above, suitable for operating temperatures up to 500 °C
ASTM A 217
Grade WC 6
Alloyed steel castings for operating temperatures up to 550 °C, with improved resistance to pressurised hydrogen; for use in chemical installations not involving any significant exposure to corrosion
ASTM A 217
Grade WC 9
ASTM A 217
Grade WC 5
ASTM A 217
Grade 12
As above, with enhanced resistance to pressurised hydrogen
ASTM A 487
Grade 1 – Class B
High-strength steel castings for pressurised components, valves, pumps and accessories, and for mechanical engineering applications
ASTM A 487
Grade 1 – Class C
ASTM A 487
Grade 4 – Class A
ASTM A 487
Grade 4 – Class B
ASTM A 487
Grade 4 – Class C
ASTM A 487
Grade 4 – Class D

* further grades on request