10B21 - Q/XG 137-2018

10B21 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr ^*	Ni ^*	Cu ^*	B	Al
Minimum Value	0.18	-	0.6	-	-	-	-	-	0.0008	0.02
Maximum Value	0.23	0.1	0.9	0.03	0.03	0.3	0.2	0.2	0.003	-

10B21 Corresponding Standards(Same grade name, different standards)

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