Table 3.

Mechanical features of SAE 1020 and SAE 5120 tested.

Material Number after EN/SAE	Heat Treatment	Rm [MPa]	${\mathit{R}}_{\mathit{p}0.2}$ [MPa]	${\mathit{\sigma }}_{\mathit{m},\mathit{f}1}$ [MPa]	${\mathit{\sigma }}_{\mathit{Y},\mathit{f}1}$ [MPa]	${\mathit{\alpha }}_{\mathit{f}}$ [-]	${\mathit{\sigma }}_{\mathit{a},\mathit{s}\mathit{t}\mathit{a}\mathit{r}\mathit{t}2}$ [MPa]	$\mathit{\Delta }{\mathit{\sigma }}_{\mathit{a}2}$ [MPa]
1.1149SAE 1020	+N	460	290	260	220	0.2	180	4
	+QT650	580	440	340	300	0.3	260	6
	+QT250	470	595	360	300	0.5	240	10
1.7149SAE 5120	+N	540	340	300	240	0.3	180	6
	+QT650	700	600	460	440	0.2	420	4
	+QT250	1200	905	760	580	0.6	400	12