STAINLESS STEEL

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STAINLESS STEEL ALLOYS
 
UNS S17400 - Type 630, commonly called 17-4, is a martensitic, precipitation hardening stainless steel. A low temperature heat treatment can provide unusually high strength and hardness, with corrosion-resistance similar to that of Type 304 austenitic stainless steel.

UNS S30300 - Type 303 is a fully resulfurized free-machining austenitic stainless steel melted and processed to maximize machinability. It should be considered where extensive machining is required and some sacrifice in corrosion-resistance compared to Type 304 can be tolerated. Type 303 is nonmagnetic in the annealed condition but may become slightly magnetic as a result of cold working.

UNS S30400 - Type 304 is the modern evolution of the original "18-8" austenitic stainless steel. It is an economical and versatile corrosion-resistant stainless steel suitable for a wide range of general purpose applications. Type 304 is non-magnetic in the annealed condition but may become slightly magnetic as a result of cold working or welding.

UNS S30403 - Type 304L is the modern evolution of the original "18-8" austenitic stainless steel. It is an economical and versatile corrosion-resistant stainless steel suitable for a wide range of general purpose applications. The low carbon permits Type 304L to be welded without sensitization to intergranular corrosion resulting from chromium carbide precipitation in the grain boundaries. Type 304L is non-magnetic in the annealed condition but may become slightly magnetic as a result of cold working or welding.

  UNS S31600 - Type 316 is a molybdenum-containing austenitic stainless steel intended to provide improved corrosion-resistance relative to Type 304/304L in moderatley corrosive process environments, particularly those containing chlorides or other halides. Type 316 is non-magnetic in the annealed condition but may become slightly magnetic as a result of cold working or welding.

UNS S31603 - Type 316L is a molybdenum-containing austenitic stainless steel intended to provide improved corrosion-resistance relative to Type 304/304L in moderatley corrosive process environments, particularly those containing chlorides or other halides. The low carbon permits Type 316L to be welded without sensitization to intergranular corrosion resulting from chromium carbide precipitation in the grain boundaries. Type 316L is non-magnetic in the annealed condition but may become slightly magnetic as a result of cold working or welding.

UNS S31703 - Type 317L is a molybdenum-containing austenitic stainless steel intended to provide improved corrosion-resistance relative to Type 316L in strongly corrosive process environments, particularly those containing chlorides or other halides. The low carbon permits Type 317L to be welded without sensitization to intergranular corrosion resulting from chromium carbide precipitation in the grain boundaries. Type 317L is non-magnetic in the annealed condition but may become slightly magnetic as a result of cold working or welding.