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              440C Stainless Steel Bar

              UNS S44004

              Stainless steel 440C, also known as UNS S44004, principal elements are .95% to 1.2% carbon, 16% to 18% chromium, .75% nickel, with traces of manganese, silicon, copper, molybdenum, phosphorus and sulfur. Grade 440C is a high carbon martensitic stainless with moderate corrosion resistance good strength, and the ability to obtain and hold excellent hardness (Rc 60) and wear resistance. It is considered to be slightly cold workable by common practices and does respond to heat treatment.

              Industries that use 440C include:

              • Machine shop
              • Tool
              • Utensils

              Products partially or completely constructed of 440C include:

              • Ball bearings
              • Knives
              • Mold inserts
              • Nozzles
              • Surgical tools
              • Valves
              • Wear parts of pumps
              Stocking Diameters ½” to 16”
              Material Lengths Up to 12’
              Bar Specifications
              Uns Type Ams Astm Federal Characteristics
              S44004 440C 5618
              5630
              5880
              A-276
              A-314
              A-493
              QQ-S-763 440 A, B, and C all have the same basic composition with varying high carbon contents. This produces higher strength/hardness with 440 versions. Corrosion resistant only in the hardened condition.
              Chemistry Analysis
              C MN P S SI CR NI MO CU OTHER M/NM
              .95 – 1.2 1. .04 .03 1. 16. – 18. .75 .75 .5   M

              The information above is not warranted, guaranteed, or for design purposes.

              The information above is not warranted, guaranteed, or for design purposes.

              Get the right answers right away!Get the right answers right away! People make the difference at National Specialty Alloys, Inc. With our in-depth product knowledge and extensive cross training, the National Specialty Alloys, Inc. sales and support staff are motivated to deliver fast, accurate information - first call, every call.

              ISO 9001:2015 ABS QE Certificate of Compliance (32115) since 1996

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