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Path: Useful Information >> Stainless steel specification>> Chemical Composition
Chemical Composition Chart - Stainless Steel
UNS#
ALLOY
C
Mn
Cr
Mo
Ni
Fe
Si
P
S
Al
Cu
Zn
Other
S30400
SST-304
0.08
2
18-20
--
8-10.5
BAL
1
0.45
0.03
--
--
--
--
S30403
SST-304L
0.03
2
18-20
--
8-12
BAL
1
0.45
0.03
--
--
--
--
S31600
SST-316
0.08
2
16-18
2-3
10-14
BAL
1
0.45
0.03
--
--
--
--
S31603
SST-316L
0.03
2
16-18
2-3
10-14
BAL
1
0.45
0.03
--
--
--
--
S32100
SST-321
0.08
2
17-19
--
9-12
BAL
1
0.45
0.03
--
--
--
Ti5 x C Min
N08300
SST-330
0.08
2
17-20
--
34-37
BAL
0.75-1.5
0.03
0.03
--
1
--
--
S34700
SST-347
0.08
2
17-19
0.75
9-13
BAL
1
0.45
0.03%
--
0.50
--
--
S41000
SST-410
0.15
1
11.5-13.5
--
--
BAL
1
0.45
0.03
--
--
--
--
S43000
SST-430
0.12
1
16-18
--
--
BAL
1
0.45
0.03
--
--
--
--
 
303 - Free machining for use in automatic machining operations. Hign corrosion resistant
 
304 - The most widely used of the stainless steels. Offers good corrosion resitance to many enviroments. Has good formablility 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 temperature 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 sustems. Excellent formability and weldability. Because of it's 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.
 
430 - Is the most popular of the non-hardenable chromium stainless steels. It combines good corrosion and heat resistance with good machanical properties. Oxidation to 1500 degree F. Widely used in both industrial and consumer products.
 
 
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