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              Stainless Steel Bar Specifications

              UNS = Unified Numbering System
              TYPE = Commonly used grade name
              AMS = Aerospace Society for Testing and Materials
              ASTM = American Society for Testing and Materials
              FEDERAL = Federal specifications

              UNS TYPE AMS ASTM FEDERAL CHARACTERISTICS STOCK CHECK
              S13800 13-8 PH 5629 A-564 Excellent transverse properties, has superior strength and toughness. Contact Us
              S15500 15 – 5 PH® 5658
              5659
              A-564 15 – 5 PH® is similar to 17-4 PH but superior transverse ductility and toughess. Contact Us
              S15700 15-7 PH 5657 A-564 Similar to 17-7 PH but with higher strength. Contact Us
              S17400 17-4 PH 5622
              5643
              A-564 Combines excellent corrosion resistance, high strength/hardness, low temperature hardening and good fabricating characteristics. Contact Us
              S20910 XM-19 5764 A-276
              A-314
              A-479
              Nitrogen strengthened austenitic steel, good corrosion resistance with improved mechanical properties. XM-19 is about twice the yield strength of 316. Contact Us
              S21800 21800 5848 A-276

              A-314
              A-479

              Similar to XM-19, but with lower physicals. Contact Us
              S30200 302 5636
              5637
              A-276

              A-314
              A-479
              A-493
              A-666

              QQ-S-763 Basic, general purpose stainless with good corrosion resistance and mechanical properties. 302 can be work hardened to achieve a higher tensile strength. Contact Us
              S30125 302B A-276

              A-314

              Similar to type 302, but the addition of silicon improves resistance to oxidation. 302 “B” is a work hardened condition of 302 for increased strength. Contact Us
              S30300 303 5640 A-314
              A-582
              Atmospheric corrosion resistance with improved mechanical properties. 303 is a 300 Grade with increased sulfur for good machinability. Contact Us
              S30400 304 5639 A-276
              A-479
              A-493
              QQ-S-763 304 is a low carbon content variation of 302, the difference is it minimizes carbide precipitation during welding. Contact Us
              S30400/
              S30403
              304/304L
              DUAL

              CERTIFIED

              5647 A-276
              A-314
              A-479
              QQ-S-763 Extra low carbon content eliminates harmful carbide precipitation during welding, 304/304L is superior to 304 in resistance to intergranular corrosion after welding or stress relieving. Contact Us
              S30500 305 A-276
              A-314
              A-493
              QQ-S-763 305 has a low work hardening rate, good spinning, deep-drawing and cold-heading characteristics. Contact Us
              S30800 308 A-276
              A-314
              The high chromium and nickel produce good heat and corrosion resistance. 308 is used widely for welding rod. Contact Us
              S30900 309 A-276
              A-314
              QQ-S-763 309 has high strength and resistance to scaling at high temperatures. Contact Us
              S30908 309S 5650 A-276
              A-314

              A-479

              Similar to 309 with a lowered carbon content to minimize carbide precipitation and improve weldability. 309S is commonly used for welding wire. Contact Us
              S31000 310 A-276
              A-314
              QQ-S-763 Higher alloy content improves basic characteristics, 310 is similar to 309 with even greater corrosion resistance and oxidation at high temperatures. Contact Us
              S31000/
              S31008
              310/310S 5651 A-276
              A-314
              A-479
              Similar to 310, but with lower carbon content to minimize carbide precipitation and improve weldability, it is commonly used when welding wire. Contact Us
              S31254 254 SMO® A-276
              A-479
              A very high end stainless steel strength is nearly twice that of 300 series stainless steels. Contact Us
              S31400 314 5652 A-276
              A-314
              314 contains increased silicon to further improve scaling resistance. Contact Us
              S31600 316 5648 A-276
              A-314

              A-479
              A-493

              QQ-S-763 Molybdenum improves general corrosion resistance as well as superior resistance to many types of chemical corrosives, pitting and superior creep strength at elevated temperatures. Contact Us
              S31600/
              S31603
              316/316L
              DUAL
              CERTIFIED
              5648
              5653
              A-276
              A-314
              A-479
              QQ-S-763 316/316L Dual Certified is an extra low carbon version of 316, eliminating harmful carbide precipitation during welding. Also has superior resistance to intergranular corrosion after welding of stress relieving. Contact Us
              S31700 317 A-276
              A-314
              QQ-S-763 317 contains a higher alloy content improving basic advantages of 316. Contact Us
              S31700/
              S31703
              317/317L
              DUAL
              CERTIFIED
              A-479
              A-276
              317/317L Dual Certified is an extra low carbon variation of 317, ideal for welded structures. Contact Us
              S31803/
              S32205
              DUPLEX
              A-276
              A-479
              Roughly double the strength of standard austenitic stainless steels, designed to improve resistance in many applications, such as chloride environments and sulfide stress corrosion. Contact Us
              S32100 321 5645 A-276
              A-314

              A-479

              QQ-S-763 321 is a titanium stabilized 300 Grade to permit use in approximately 800° F to approximately 1500° F range, without harmful carbide precipitation. 321 is subject to intergranular corrosion. Contact Us
              S32750 SUPER DUPLEX A-479 Higher chromium and nitrogen content in Super Duplex makes it superior in corrosion resistance and enables a longer lifespan than Duplex. Contact Us
              S34700 347 5646

              5654

              A-276
              A-314
              A-479
              QQ-S-763 347 is overall superior to 321, but with similar characteristics. 347 is stabilized by cobalt and tantalum, easily welded, resists intergranular corrosion. Contact Us
              UNS TYPE AMS ASTM FEDERAL CHARACTERISTICS STOCK CHECK
              S34723 347F Se 5642 Free-machining variation of 347. Contact Us
              S34800 348 A-276
              A-314
              A-479
              348 is similar to 347, the difference is tantalum is reduced in 348. Contact Us
              S40300 403 A-276

              A-314
              A-479

              QQ-S-763 403 is a special high quality variation of 410, but it has a lower silicon content which results in tighter control on composition and manufacturing. 403 is used for highly stressed parts. Contact Us
              S41000 410 5613 A-276
              A-314

              A-479
              A-493

              QQ-S-763 410 is a low cost general purpose stainless steel, that hardens at 35-39 RC and is used widely where corrosion is not severe. Contact Us
              S41400 414 5615 A-276
              A-314

              A-479

              QQ-S-763 414 is similar to 410, but with somewhat better corrosion resistance and mechanical properties. Contact Us
              S41600 416 5610 A-314
              A-582
              QQ-S-763 Corrosion resistance with rapid, free machinability, heat treatment to 35 RC min. 416 Heat Treat is pre-heat treated. Contact Us
              S42000 420 5621 A-276

              A-314

              QQ-S-763 420 is similar to 400, but the raised carbon content produces higher strength and hardness. Heat treatment to 50 RC min. Contact Us
              S42020 420F 5620 A-582 Free-machining variation of 420. Contact Us
              S42023 420F Se 5620 A-582 Similar to 420F, commonly used for forging. Contact Us
              S42200 422 5655 A-565 422 is a high strength alloy with excellent creep/rupture qualities at high temperatures. It also has good heat treat qualities at varying hardnesses. Contact Us
              S43000 430 5627 A-276
              A-314
              A-479
              QQ-S-763 430 is the most popular of the chromium types, it combines good heat resistance and mechanical properties. Contact Us
              S43020 430F A-314
              A-582
              430F provides corrosion resistance in some applications, also often used for decorative purposes. Contact Us
              S43100 431 5628 A-276
              A-314

              A-493

              431 has among the best corrosion resistance of the standard hardenable chromium types, with high mechanical properties after heat treatment. Contact Us
              S44002 440A 5631 A-276
              A-314
              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 Contact Us
              S44003 440B A-276

              A-314

              QQ-S-763 Contact Us
              S44004 440C 5618
              5630
              5880
              A-276
              A-314
              A-493
              QQ-S-763 Contact Us
              S44020 440F 5632 A-582 Free-machining version of 440. Contact Us
              S44023 440F Se A-582 Free-machining version of 440, with a higher selenium content allowing easy chip breakage and acts as a lubricant during machining. Contact Us
              S44600 446 A-276
              A-314
              QQ-S-763 Good corrosion resistance with low coefficient of expansion. Contact Us

              15 – 5 PH® is a trademark of Armco Inc.

              254 SMO® is a trademark of Avesta
              The information above is not warranted, guaranteed, or for design purposes.

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

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