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17-7 PH SUS631 S17700 DIN1.4568 is a precipitation hardening martensitic stainless steel with Al additions. This material combines high strength and hardness, good corrosion resistance, excellent fatigue properties, good formability and minimum distrotion upon heat treatment. The materials are well suited for aerospaces applications or for the parts requiring formability, strength and good corrosion resistance. Standard: ASTM A564, A705, A313. We offer the materials in form of stainless stee