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4140 1045 42CrMo 34CrNiMo6 10Ton Flange Forging Steel Shaft Specifications 1. Material: 18CrNiMo7-6, SAE 4340, 4140, S355JR, 34Cr2Ni2MoA/34CrNI3MoA 2.Certificates: ISO9001-2008, SGS, PED Forged Shaft, ...