Alloy Steels: ASTM A 128, ASTM A 297, ASTM A 352 with various grades. Machine SteelsAISI 4140,4340, 5115, 3115, E71400 and 52100. Heat Resistance Steel AISI 314, 310S Austenitic High Chromium Nickle Steel. Plastic Mold Steels AISI P20, P20-Ni, 420 and modified 420. Stainless Steels AISI 420, 440C, 431 and 316L Hot Work Tool Steels AISI H13, 6F3 and H21. Cold Work Tool Steels AISI D6, D2, L2, O1, 6F7, S1, S4 & W1. High Speed Steels AISI M2 and M35. We can make Induction Hardening and Carburizing Hardening after machining and then grinding finishing. We can also make Nit riding after machining grinding and finishing.