Compare R30075 Cobalt to Wrought Resulfurized Carbon Steel
SAE-AISI 1524 (formerly 1024, G15240) Carbon SteelSAE-AISI 1527 (formerly 1027, G15270) Carbon Steel
SAE-AISI 1536 (formerly 1036, G15360) Carbon SteelSAE-AISI 1541 (formerly 1041, G15410) Carbon Steel