28Cr4 1.7030 - DIN 17200-1987

28Cr4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr
Minimum Value	0.24	-	0.6	-	-	0.9
Maximum Value	0.31	0.4	0.9	0.035	0.03	1.2

28Cr4 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
All Sizes	Shearable condition (C)					≤255
All Sizes	Softening Annealing (G)					≤217
d≤16	Quenching and Tempering (V)	850~1000	≥650	≥12	≥40		ISO-V ≥35
16<d≤40	Quenching and Tempering (V)	750~900	≥550	≥14	≥45		≥40
40<d≤100	Quenching and Tempering (V)	650~800	≥410	≥15	≥50		≥45

1 Approximate Comparison Table structural alloy steel

2 Approximate Comparison Table

China	International Organization for Standardization	Germany	European Standard
GB	ISO	DIN EN/DIN	EN	Numerical Grade
28CrH	28Cr4	28Cr4	28Cr4	1.7030

28Cr4 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"!