21B3 - NF A 35-551-1986

21B3 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	B
Minimum Value	0.18	0.1	0.6	-	-	0.0008
Maximum Value	0.24	0.4	0.9	0.035	0.035	0.005

21B3 Corresponding Standards(Same grade name, different standards)

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