Stainless Steels: ASTM A 128, ASTM A 297, ASTM A 352 with various grades. General Purpose Stainless Steels–AISI 201,301, 302, 303, 303Se and 304 Austenitic Stainless Steels. 302HQ,304N, 305, 310, 310S, 314. 316, 316L, 316F and 316N. 317 317L, Low Carbon Steel is better than 316L for resistance to pitting application. 317LMN 321, 330, 347 and 348, 384, 405, 409, 429, 430, 430F, 430FSe, 434, 436, 442, and 446.430. 403, 410, 414, 416, 416Se and 420.410 –are General Purpose Stainless Steels. UNS S13800, S15500. S17400 and S17700. Duplex Stainless Steels 329 and 2205. We can make Hard Chromium plating after machining and then grinding –finishing.