Written by AZoMJan 2 2002
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Grade
|
UNS No.
|
Typical Composition (%)
|
Description and Applications
|
|
C
|
Mn
|
Cr
|
Mo
|
Ni
|
others
|
|
301
|
S30100
|
0.15
|
2
|
16-18
|
|
6-8
|
|
Primarily for roll-formed paneling, high strength springs and deep drawn components.
|
|
302HQ
|
S30430
|
0.01
|
0.6
|
17.7
|
|
9.7
|
Cu 3
|
Wire for severe cold heading applications, such as cross-recess screws.
|
|
303
|
S30300
|
0.06
|
1.8
|
18
|
|
9
|
S 0.3
|
Free machining grade for high speed repetition machining. Also available as "Ugima" 303 improved machinability bar for even higher machinability.
|
|
304
|
S30400
|
0.08
|
2
|
18 - 20
|
|
8-12
|
|
Standard austenitic grade - good corrosion resistance and excellent fabrication characteristics. Also available as "Ugima" 304 improved machinability bar.
|
|
304L
|
S30403
|
0.03
|
2
|
18 - 20
|
|
8-12
|
|
Low carbon version of 304 gives resistance to intergranular corrosion for heavy section welding and high temperature applications.
|
|
308L
|
S30803
|
0.02
|
1
|
19.5
|
|
10.5
|
|
Filler wire for welding 304 and similar grades.
|
|
309
|
S30900
|
0.2
|
2
|
22-24
|
|
12-15
|
|
Good corrosion resistance and improved resistance to hot sulfur compounds present in oxidizing gases. Filler for welding dissimilar metals.
|
|
310
|
S31000
|
0.25
|
2
|
24-26
|
|
19-22
|
|
Good resistance to oxidation and carburizing atmospheres in temperatures of 850-1100°C.
|
|
316
|
S31600
|
0.08
|
2
|
16-18
|
2-3
|
10-14
|
|
Higher resistance than 304 to many media, particularly those containing chlorides. Also available as "Ugima" 316 improved machinability bar.
|
|
316L
|
S31603
|
0.03
|
2
|
16-18
|
2-3
|
10-14
|
|
Low carbon version of 316 offers excellent intergranular corrosion resistance - for high temperature applications and heavy section welding.
|
|
321
|
S32100
|
0.05
|
1
|
18
|
|
9
|
Ti 0.5
|
Titanium stabilized grade resists intergranular corrosion during exposure at 425 to 850°C. High strength in this temperature range.
|
|
347
|
S34700
|
0.04
|
1
|
18
|
|
9
|
Nb 0.7
|
Niobium stabilized grade resists intergranular corrosion as for 321, but more commonly used as a filler for welding 321.
|
|
904L
|
N08904
|
0.02
|
1
|
20
|
4.5
|
24
|
Cu 1.5
|
Super austenitic grade having very high corrosion resistance, particularly to warm chlorides and sulfuric acid.
|
|
2111HTR
|
S30815
|
0.09
|
0.6
|
21
|
|
11
|
N 0.16
Ce 0.06
|
Excellent scaling and creep resistance at temperatures up to 1150°C.
|