Grades available: SAE4140 H13 EN8D SAE1042 MS IS1875 C40 EN24 D3 EN8 18CrNiMo6 1.2379 EN31 AISI 4140 SAE8620 EN19 SAE52100 IS2062 E250A 20MnCr5 EN1A D2 KNL D2 SAE4340