A571 Class 2 - ASTM A 571/A571M-2001(R2023)

Grade	A571 Class 2
Corresponding Standard	ASTM A 571/A571M-2001(R2023) Standard Specification for Austenitic Ductile Iron Castings for Pressure-Containing Parts Suitable for Low-Temperature Service
Classification	cast Iron

A571 Class 2 Chemical Element Composition Content (%)

Component	C ^①	Si	Mn	P	Cr ^②	Ni
Minimum Value	2.2	1.5	3.75	-	-	21
Maximum Value	2.7	2.5	4.5	0.08	0.2	24

① Total carbon. For castings with sections under 6 mm, it may be desirable to adjust the carbon upwards to a maximum of 2.90 %.
② Not intentionally added.

A571 Class 2 Mechanical Properties

Tensile Strength σ_b ksi	Specified Plastic Yield Strength Rp_0.2 ksi	Elongation or Extension Rate δ %	Hardness HBW	Impact Energy Absorption KV2 J
≥60	≥25	≥25	111~171	ft·lbf ≥20

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!