Table 4 Nominal chemical compositions of...

Table 4

Nominal chemical compositions of spring steels (%)

Grade	Designation number	C	Si	Mn	P	S	Cr	Ni	Cu	V
61SiCr7	1.7108	0.560.64	1.50–2.00	0.600.90	$\leq$ 0.035	$\leq$ 0.035	$\leq$ 0.35	$\leq$ 0.35	$\leq$ 0.25	–
51CrV4	1.8159	0.47 0.55	max 0.4	0.7 1.1	max 0.025	max 0.025	0.9–1.2	–	–	0.1–0.25

Grade	Designation number	C	Si	Mn	P	S	Cr	Ni	Cu	V
61SiCr7	1.7108	0.560.64	1.50–2.00	0.600.90	$\leq$ 0.035	$\leq$ 0.035	$\leq$ 0.35	$\leq$ 0.35	$\leq$ 0.25	–
51CrV4	1.8159	0.47 0.55	max 0.4	0.7 1.1	max 0.025	max 0.025	0.9–1.2	–	–	0.1–0.25

Source(s): Author’s own work

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