Stainless Steel Specification and Composition Table Chart

Chemical Composition Chart Stainless Steel

UNS# ALLOY C Mn Cr Mo Ni Fe Si P S Al Cu Zn OTHER
S30400 SST-304 .08 2 18-20 -- 8-10.5 BAL 1 .045 .03 -- -- -- --
S30403 SST-304L .03 2 18-20 -- 8-12 BAL 1 .045 .03 -- -- -- --
S31600 SST-316 .08 2 16-18 2-3 10-14 BAL 1 .045 .03 -- -- -- --
S31603 SST-316L .03 2 16-18 2-3 10-14 BAL 1 .045 .03 -- -- -- --
S32100 SST-321 .08 2 17-19 -- 9-12 BAL 1 .045 .03 -- -- -- Ti 5 x C Min.
N08330 SST-330 .08 2 17-20 -- 34-37 BAL .75-1.5 .03 .03 -- 1 -- --
S34700 SST-347 .08 2 17-19 .75 9-13 BAL 1 .045 .03% -- .50 -- --
S41000 SST-410 .15 1 11.5-13.5 -- -- BAL 1 .045 .03 -- -- -- --
S43000 SST-430 .12 1 16-18 -- -- BAL 1 .045 .03 -- -- -- --

303 - Free machining for use in automatic machining operations.  High corrosion resistant

304 - The most widely used of the stainless steels.  Offers good corrosion resistance to many environments.  Has good formability and can be readily welded.

309 - Used in high temperature applications.  High scale resistance.  Corrosion resistance superior to 304.  Resists corrosion when welded.

316 - Better corrosion resistance as well as higher strength at elevated temperatures than 304.  Often used for pumps, valves, chemical equipment and marine applications. Most popular of stainless steels.

409 - Lowest cost stainless - used extensively in automotive exhaust systems.  Excellent formability and weldability.  Because of its economy and good resistance to oxidation and corrosion, this stainless offer many opportunities for a wide range of parts.

410 - Heat-treatable stainless used widely where corrosion is not severe - air, fresh water, some chemicals and food acids.

416 - Free machining variation of  410 with useful corrosion resistance to natural food acids, basic salts, water and most atmospheres.

416 - Free-machining  variation of 410 with useful corrosion resistance to natural food acids, basic salts, water and atmospheres

430 - Is the most popular of the non-hardenable chromium stainless steels.  It combines good corrosion and heat resistance with good mechanical properties.  Oxidation resistance to 1500 deg F widely used in both industrial and consumer products.

See our Material Manufacturing page!

Contribute Article
Spider Trap

© Copyright 2000 - 2015, by Engineers Edge, LLC www.engineersedge.com
All rights reserved
Disclaimer | Feed Back | Advertising | Contact