28B2 1.5510 - DIN 1654-4-1989

28B2 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	B
Minimum Value	0.25	-	0.5	-	-	0.0008
Maximum Value	0.32	0.4	0.8	0.035	0.035	0.005

28B2 Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Reduction of Area ψ %
Steel	Spheroidizing Annealing (GKZ) or Spheroidizing Annealing + Peeling (GKZ+SH)	≤540	≥62
Steel	Cold drawing + Spheroidizing Annealing (K+GKZ)	≤520	≥64
Steel	Cold drawing + Spheroidizing annealing + Skinning (K+GKZ+K)	≤570	≥64

Approximate Comparison Table structural alloy steel

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"!