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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