G20Mn5 1.6220 - ISO 4991-2024

Grade	G20Mn5
ISO Numeric Designation	1.6220
Corresponding Standard	ISO 4991-2024 Steel castings for pressure purposes
Classification	Cast Steel

G20Mn5 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V
Minimum Value	0.17	-	1	-	-	-	-	-	-	-
Maximum Value	0.23	0.6	1.6	0.02	0.02	0.3	0.8	0.3	0.12	0.03

G20Mn5 Mechanical Properties

thickness t mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
t≤100	Normalizing (+N) 900~980°C	480~620	≥300	A: ≥20	-30°C: ≥27
t≤100	Quenching + Tempering (+QT) Quenching temperature 900~980°C , Tempering temperature 610~660°C	500~650	≥300	A: ≥22	-40°C: ≥27

Approximate Comparison Table Cast Steel

China	United States	International Organization for Standardization
GB	UNS	ISO	Numerical Grade
ZG20 ZG20Mn5	J02505	G20Mn5	1.6220

G20Mn5 Corresponding Standards(Same grade name, different standards)

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