Stainless steel is essentially a low carbon steel which contains chromium at 10% or more by weight. It is this addition of chromium that gives the steel its unique stainless, corrosion resisting properties. The corrosion resistance and other useful properties of the steel are enhanced by increased chromium content and the addition of other elements such as molybdenum, nickel and nitrogen.
Grades - Chemical Composition and Equivalent Standards
AISI ASTM
EN DIN
C % Max
Mn % Max
Si % Max
S % Max
P % Max
Cr % Max
Ni % Max
Mo % Max
Others %
201
-
0.15
5.5-7.5
1.00
0.030
0.060
16.00-18.00
3.50-5.50
-
-
202
-
0.15
7.5-10
1.00
0.030
0.060
17.00-19.00
4.00-6.00
-
-
302
1.4310
0.15
2.00
1.00
0.030
0.045
17.00-1900
8.00-10.00
-
-
302HQ
1.4567
0.03
2.00
1.00
0.030
0.045
17.00-19.00
9.00-10.00
-
Cu : 3.00-4.00
303
1.4305
0.15
2.00
1.00
0.15 Min
0.20
17.00-1900
8.00-10.00
-
Cu : 1% max
303EHS
-
0.15
2.00
1.00
0.30-0.33
0.20
17.00-19.00
8.00-10.00
-
Cu : 1% max
304
1.4301
0.08
2.00
1.00
0.030
0.045
18.00-20.00
8.00-11.00
-
-
304HC
-
0.05
2.00
1.00
0.030
0.045
18.00-20.00
8.50-9.50
-
Cu : 2.00-2.50
304L
1.4306
0.03
2.00
1.00
0.030
0.045
18.00-20.00
8.00-12.00
-
-
308LER
1.4331
0.02
1.5-2.0
0.50
0.020
0.025
19.00-21.00
9.50-11.00
-
-
309LER
1.4332
0.03
1.5-2.0
0.50
0.015
0.020
23.00-25.00
12.00-14.00
-
-
310
1.4841
0.25
2.00
1.50
0.030
0.045
24.00-26.00
19.00-22.00
-
-
310S
1.4842
0.08
2.00
1.50
0.030
0.045
24.00-26.00
19.00-22.00
-
-
316
1.4401
0.08
2.00
1.00
0.030
0.045
16.00-18.00
10.00-14.00
2.00-3.00
-
316L
1.4404
0.03
2.00
1.00
0.030
0.045
16.00-18.00
10.00-14.00
2.00-3.00
-
316LER
1.4430
0.02
1.5-2.0
0.50
0.020
0.020
18.00-20..00
12.00-14.00
2.00-2.75
-
316Ti
1.4571
0.08
2.00
1.00
0.030
0.045
16.00-18.00
10.00-14.00
2.00-3.00
Ti : Min (5xC%)
317LN
1.4438
0.03
2.00
1.00
0.030
0.045
18.00-20.00
11.00-15.00
3.00-4.00
N : 0.10-0.22
321
1.4541
0.08
2.00
1.00
0.030
0.045
17.00-19.00
9.00-12.00
-
Ti : Min (5xC%)
410
1.4006
0.15
1.00
1.00
0.030
0.040
11.50-13.50
-
-
-
416
1.4005
0.15
1.25
1.00
0.15 Min
0.060
12.00-14.00
-
-
-
416XM
-
0.15
1.25
1.00
030-0.33
0.060
12.00-14.00
-
-
-
420
1.4021
0.15 Min
1.00
1.00
0.030
0.040
12.00-14.00
-
-
-
430
1.4016
0.12
1.00
1.00
0.030
0.040
16.00-18.00
-
-
-
430L
-
0.03
1.00
1.00
0.030
0.040
16.00-18.00
-
-
-
430F
1.4104
0.12
1.25
1.00
0.15 Min
0.060
16.00-18.00
-
-
-
431
1.4057
0.20
1.00
1.00
0.030
0.040
15.00-17.00
1.25-2.50
-
-
Benefits of Stainless Steel
• Corrosion Resistance
• Fire And Heat Resistance
• Hygiene
• Aesthetic Appearance
• Strength-To-Weight Advantage
• Impact Resistance
• Lower Total Life Cycle Cost
• 100%Recyclable
Tolerance Chart for SS Round Bars as per ISO
Size Range (mm)
h8
h9
h10
h11
h12
h13
K12/K13
Upto 6
-0.018
-0.030
-0.048
-0.075
-0.120
-0.180
-
Over 6 upto 10
-0.022
-0.036
-0.058
-0.090
-0.150
-0.220
-
Over 10 upto 18
-0.027
-0.043
-0.070
-0.110
-0.180
-0.270
-
Over 18 upto 30
-0.033
-0.052
-0.084
-0.130
-0.210
-0.330
+0.10/+0.15
Over 30 upto 50
-0.039
-0.062
-0.100
-0.160
-0.250
-0.390
+0.15/+0.20
Over 50 upto 80
-0.046
-0.074
-0.120
-0.190
-0.300
-0.460
+0.20/+0.25
Over 80 upto 120
-0.054
-0.087
-0.140
-0.220
-0.350
-0.540
+0.25/+0.30
Tolerance Chart For SS Round Bars as per ASTM A 484
