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Low alloy steel, NIST® SRM® 293, Cr-Ni-Mo (AISI 8620)
Low alloy steel, NIST® SRM® 1765
Low alloy steel, NIST® SRM® 361, (AISI 4340)
Low alloy steel, NIST® SRM® 1766
Low alloy steel, NIST® SRM® 1226, (HY 130)
Low alloy steel, disk form, NIST® SRM® 1763b
Low alloy steel, NIST® SRM® 1264a, high carbon (mod.)
Low alloy steel, NIST® SRM® 2165
Low alloy steel, NIST® SRM® 1764a
Low alloy steel, NIST® SRM® 2166, F
Low alloy steel, NIST® SRM® 1225, (AISI 4130)
Low alloy steel, NIST SRM 1218, high silicon
Low alloy steel, NIST® SRM® 1286, (HY 80)
Low alloy steel, NIST® SRM® 1228, 0.1% C
Low alloy steel, NIST® SRM ®1227, basic open hearth, 1%C
Low alloy steel, NIST® SRM® 1271, Ni-Cr-Cu-Mo (HSLA-100)
Low alloy steel, NIST® SRM® 129c, high sulfur (SAE 112)
Low alloy steel, NIST® SRM® 32e, Ni-Cr (SAE 3140)
Low alloy steel, NIST® SRM® 2167, G
Low alloy steel, NIST® SRM® 2160, carbon & sulfur only