AF11G - GB /T 14383-2021

Performance Level	AF11G
Corresponding Standard	GB /T 14383-2021 Forged fitting, socket-welding and threaded
Classification	Alloy Steel

AF11G Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo
Minimum Value	0.05	0.5	0.3	-	-	1	-	0.44
Maximum Value	0.2	1	0.8	0.03	0.03	1.5	0.3	0.65

AF11G Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
≥485	≥275	≥20	≥30	≤207

① Yield Point: For pipe fittings of the stainless steel category, the specified non-proportional elongation strength Rp0.2 is used. For pipe fittings of other material categories, when the lower yield strength ReL is not clearly defined, the specified non-proportional elongation strength Rp0.2 is used.

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