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Stainless Steels

Nominal Chemical Composition
Alloy AMS UNS/W.Nr. Cr Ni Mo Si Fe Other Description
RA 253 MA® - S30815 1.4835 21 11 - 1.7 65 0.04 Ce, 0.17 N, 0.08 C, 0.6 Mn An advanced micro-alloyed austenitic heat resistant alloy. High creep-rupture strength and outstanding oxidation resistance through 2000°F.
309 5523 S30908 1.4833 23 13 - 0.8 62 1.6 Mn, 0.05 C Austenitic, oxidation resistant to 1900°F, moderate strength. Useful in reducing sulfidizing atmospheres.
310 5521 5651 S31008 1.4845 25 20 - 0.5 52 1.6 Mn, 0.05 C Austenitic heat resistant grade with higher chromium and nickel for oxidation resistance beyond 2000°F. Good sulfidation and hot corrosion resistance.
321 5510 5645 S32100 1.4541 17.3 9.3 - 0.7 70 0.01 C, 0.2 Ti A titanium stabilized austenitic stainless commonly used for service in the 1000- 1600°F range.
347 5512 5646 5680 S34700 1.4550 17 9.5 - 0.7 70 1.5 Mn, 0.04 C, 0.5 Cb A columbium stabilized austenitic stainless useful up to 1600°F.
17-4 5825 5604 S17400 1.4548 15.5 4.7 - - 75 0.06 C, 3.3 Cu Age-hardening martensitic stainless. Good strength and corrosion resistance. Simple heat treatment.
17-4 H1150
17-4 HH1150
A-286 5525 5804 S66286 1.4980 15 26 1.3 - 54 0.2 Al, 0.3 V, 2.0 Ti 0.005 B Precipitation hardenable iron base alloy for continuous use from -320 to 1000°F. Aqueous corrosion resistance similar to 316L stainless. Used for jet engine components, high temperature fasteners and springs. Also used for non-magnetic cryogenic equipment.
304 / 304H 5513 S30400 S30409 1.4301 1.4948 18.3 8.3 - - 70 0.05 C, 0.3 Si 18-8 stainless with elevated carbon and coarser grain structure to increase high temperature strength. Useful up to 1500°F.
304 / 304L 5639 5647 5513 5511 S30403 1.4301 1.4307 18.3 9.0 - - 70 0.02 C Austenitic stainless, low carbon for as-welded corrosion resistance.
316 / 316L 5648 5653 5507 S31603 1.4401 1.4404 16.4 10.2 2.1 - 69 0.02 C Molybdenum alloyed austenitic stainless. Most popular chemical process grade.
410 5504 S41000 1.4006 12 - - - 87 0.14 C Hardenable 12 chromium martensitic.
410S - S41008 1.4000 12 - - - 87 0.08 C Lower carbon 12 chromium martensitic, weldable.
446 - S44600 1.4763 25 - - 0.5 73 0.7 Mn, 0.05 C High chromium ferritic alloy with excellent oxidation and sulfidation resistance. Low strength.
317L - S31703 1.4438 18 11.6 3.1 0.4 65 0.02 C, 1.5 Mn, 0.05 N An austenitic stainless steel with increased molybdenum content over 316L for improved pitting resistance.
303 5640 S30300 1.4305 17.3 8.5 - - 70 0.05 C, 0.35 S Free machining 18-8 stainless.
303 HST 5649 S30300 1.4305 17.3 8.5 - - 70 0.05 C, 0.35 S 303 HST is a version of 303 which through controlled production offers more consistent machinability than standard 303.
Prodec® 303 5640 S30300 1.4305 17.3 8.5 - - 70 0.05 C, 0.35 S Rolled Alloys Machining grade of Prodec® 303 stainless.
Prodec® 304 / 304L 5639 5647 S30403 S30400 1.4301 1.4307 18.3 9.0 - - 70 0.02 C Rolled Alloys Machining grade of Prodec® 304/L stainless.
Prodec® 316 / 316L 5648 5653 S31603 S31600 1.4401 1.4404 16.4 10.2 2.1 - 69 0.02 C Rolled Alloys Machining grade of Prodec® 316/L stainless.
15-5 5659 S15500 15 4.5 - - 76 3.5 Cu, 0.2 Mn, 0.3 Cb, 0.04 C Age hardening martensitic stainless.
13-8 5629 S13800 1.4548 13 8.0 2.5 - 76 0.03 C Martensitic PH stainless with high strength, hardness, superior toughness and good corrosion resistance.
Nitronic 50
(XM-19)		 5764 S20910 1.3964 22 12.5 2.0 0.4 57 5.0 Mn, 0.3 N, 0.2 Cb, 0.03 C High strength and good corrosion resistance. Nearly 2X strength of 304 & 316 with better corrosion resistance than 317L.
Nitronic 60 5848 S21800 17 8.5 - 4.0 63 8.0 Mn, 0.13 N, 0.05 C Excellent galling resistance at high temperatures. Used for fasteners and pins.
Page Description: Rolled Alloys
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