20MoCr 4 1.7321 - DIN 1654-3-1989

Grade	20MoCr 4
Germany W-Nr.	1.7321
Corresponding Standard	DIN 1654-3-1989 Cold Heading and Cold Extrusion Steel Technical Conditions for The Supply of Carburized Steel
Classification	Alloy Steel
Properties	Forgability

20MoCr 4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo
Minimum Value	0.17	-	0.7	-	-	0.3	0.4
Maximum Value	0.22	0.4	1	0.035	0.035	0.6	0.5

20MoCr 4 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Reduction of Area ψ %
Hot-rolled bars, wire rods	Spheroidizing Annealing (GKZ) or Spheroidizing Annealing (GKZ) + Pickling (SH)	≤550	≥60
Drawn products	Cold Drawing (K) + Spheroidizing Annealing (GKZ)	≤530	≥62
Drawn products	Cold Drawing (K) + Spheroidizing Annealing (GKZ) + Finishing (K)	≤550	≥62

Approximate Comparison Table Case-Carburized Bearing Steel

China		United States	International Organization for Standardization	Germany		European Standard
GB	ISC	ASTM/AISI	ISO	DIN EN/DIN	W-Nr.	EN	Numerical Grade
G20CrMo	B10200	A534 4118H	≈20MnCrMo4-2 (B27) 20MoCr4	20MoCr4	1.7321	20MoCr4	1.7321

20MoCr4 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"!