20MnB4 - ISO 4954-2018

Grade	20MnB4
Corresponding Standard	ISO 4954-2018 Steels for cold heading and cold extruding
Classification	Alloy Steel

20MnB4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	B
Minimum Value	0.18	-	0.9	-	-	-	-	0.0008
Maximum Value	0.23	0.3	1.2	0.025	0.025	0.3	0.25	0.005

20MnB4 Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Reduction of Area ψ %
5＜d≤25	+AR or +PE	≤580	≥60
5＜d≤25	+AC or +AC+PE	≤500	≥66
5＜d≤10	+AR+C	≤680	≥55
10＜d≤25	+AR+C	≤670	≥55
2＜d≤5	+AR+C+AC	≤490	≥68
5＜d≤25	+AR+C+AC	≤480	≥68
2＜d≤5	+AR+C+AC+LC	≤530	≥66
5＜d≤25	+AR+C+AC+LC	≤520	≥66
5＜d≤10	+AC+C	≤600	≥61
10＜d≤25	+AC+C	≤590	≥61

Approximate Comparison Table

International Organization for Standardization	European Standard
ISO	EN	Numerical Grade
20 MnB4	20 MnB4	1.5525

20MnB4 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"!