28B2 - ISO 4954-2018

Grade	28B2
Corresponding Standard	ISO 4954-2018 Steels for cold heading and cold extruding
Classification	Alloy Steel

28B2 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	B
Minimum Value	0.25	-	0.6	-	-	-	-	0.0008
Maximum Value	0.3	0.3	0.9	0.025	0.025	0.3	0.25	0.005

28B2 Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Reduction of Area ψ %
5＜d≤25	+AR or +PE	≤630	≥60
5＜d≤25	+AC or +AC+PE	≤520	≥64
5＜d≤10	+AR+C	≤720	≥55
10＜d≤25	+AR+C	≤710	≥55
2＜d≤5	+AR+C+AC	≤510	≥66
5＜d≤25	+AR+C+AC	≤500	≥66
2＜d≤5	+AR+C+AC+LC	≤550	≥64
5＜d≤25	+AR+C+AC+LC	≤540	≥64
5＜d≤10	+AC+C	≤610	≥59
10＜d≤25	+AC+C	≤600	≥59

Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

International Organization for Standardization	European Standard
ISO	EN	Numerical Grade
28B2	28B2	1.5510

28B2 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"!