Table 2.

Chemical composition in wt.-% of SAE 1020 and SAE 5120 tested: values according to DIN standards as benchmarks for producer’s information and our own analysis.

Material		Fe	C	Si	Mn	P	S	Cr	Mo	Ni
1.1149 SAE 1020	DIN EN 10083-2	-	0.17–0.24	≤0.4	0.40–0.70	≤0.030	0.020–0.040	≤0.40	≤0.10	≤0.40
	Producer	-	0.21	0.24	0.46	0.013	0.023	0.12	0.013	0.12
	* +N	bal.	0.234	0.286	0.481	0.014	0.018	0.118	0.014	0.112
	* +QT650	bal.	0.237	0.288	0.478	0.014	0.019	0.118	0.014	0.114
	* +QT250	bal.	0.236	0.286	0.479	0.014	0.019	0.119	0.016	0.115
1.7149 SAE 5120	DIN EN 10084	-	0.17–0.22	≤0.4	1.10–1.40	≤0.025	0.020–0.040	1.00–1.30	-	-
	Producer	-	0.18	0.24	1.23	0.015	0.026	1.05	0.022	0.10
	* +N	bal.	0.196	0.274	1.324	0.017	0.023	1.065	0.025	0.093
	* +QT650	bal.	0.194	0.274	1.309	0.016	0.024	1.056	0.022	0.093
	* +QT250	bal.	0.195	0.271	1.310	0.016	0.024	1.060	0.024	0.094

* Analysis of own samples.