WCC allows more carbon and manganese (tensile 485–655 MPa, yield ≥275 MPa) and is slightly stronger but a little less weld-friendly. WCB remains the default valve-body grade.

A216 WCB vs forged A105?

Same service family: WCB is the cast equivalent, A105 the forged. Valves mix both — cast bodies, forged flanges — on one certificate package.

Grades · Structural & HSLA Steel · A216 WCB

A216 WCB

Data verified

ASTM A216 WCB is the world’s default cast carbon steel for valve bodies, pump casings and pressure castings — the “B” carbon grade with weldability good enough for cast-to-pipe joints. If a cast steel part has no special temperature duty, it is almost certainly WCB.

DINGP240GH / 1.0619 (near)

AISIA216 WCB

JISSCPH2 (near)

CategoryStructural & HSLA Steel

Chemical composition

Element	Content (%)
C	≤0.30
Si	≤0.60
Mn	≤1.00
P	≤0.035
S	≤0.035
Cr	≤0.50 (residual)
Ni	≤0.50 (residual)
Mo	≤0.20 (residual)
V	≤0.03 (residual)

Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.

Properties

Tensile strength	485–655 MPa
Yield strength	≥250 MPa
Elongation	≥22%
Density	7.85 g/cm³

Heat treatment

Castings are annealed, normalized, or normalized and tempered per ASTM A216; weld repairs and PWHT follow the purchase specification and code (e.g. ASME B31 / Section VIII).

Equivalent grades

Standard	Designation
din	GP240GH / 1.0619 (near)
aisi	A216 WCB
jis	SCPH2 (near)
gb	ZG270-500 (near)

Compare side by side: A216 WCB vs GP240GH

Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.

Applications & Processing

Applications: Valve bodies and bonnets, pump casings, flanges and general pressure-containing castings to ~425 °C.

Processing: Cast, then machine; weldable with standard carbon-steel practice — the reason WCB displaced higher-carbon WCA/WCC in most valve designs. Magnetic-particle and radiographic examination per MSS/API as ordered.

FAQ

WCB vs WCC?: WCC allows more carbon and manganese (tensile 485–655 MPa, yield ≥275 MPa) and is slightly stronger but a little less weld-friendly. WCB remains the default valve-body grade.
A216 WCB vs forged A105?: Same service family: WCB is the cast equivalent, A105 the forged. Valves mix both — cast bodies, forged flanges — on one certificate package.

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Source: ASTM A216 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.