28Cr2Mo GY4 - GJB 1496B-2014

28Cr2Mo Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.25	0.18	0.3	-	-	1.8	-	-	0.25
Maximum Value	0.31	0.35	0.55	0.015	0.01	2.3	0.5	0.3	0.35

• Acid soluble boron content is 0.0003%~0.0005%.

28Cr2Mo Mechanical Properties

thickness t mm	Hardness HBW
t=10~20	High Temperature Tempered or Hot Rolled Sample HBW10/3000: ≤269 Indentation Diameter (mm): ≥3.7
t=25，30	High-temperature tempering or hot-rolled condition sample HBW10/3000: ≤269 Indentation diameter mm: ≥3.7 Tempered sample HBW10/3000: 341~285 Indentation diameter mm: 3.3~3.6

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!