| |
Application |
Indian Standard |
Grade |
Chemical Composition |
Mechanical Properties |
Weld Properties |
Bend Test |
|
cm |
Mn |
S max |
P max |
UTS
Kgs/mm˛
Min |
YS
Kgs/mm˛
Min |
% elongation |
Flattery |
Drifting |
Crushing |
|
1 |
ERW Tubes for Automative Application |
3074/ 1979 |
ERW-1
ERW-2
ERW-3 |
0.20 Max
0.20 to 0.30
0.40 |
0.30 to 0.60
0.30 to 0.60
.30 to .60 |
0.06
0.06
0.06 |
0.06
0.06
0.06 |
32
39
44 |
17
25
28 |
Ns
Ns
Ns |
3t
5t
8t |
12.5%
10.0%
8.0% |
-
-
Ns |
Ns
Ns
Ns |
|
2 |
ERW Tubes for Bicycles |
2039/ 1991 |
ERW-C1
ERW-C2
ERW-C3 |
0.15 Max
0.20 Max
0.25 Max |
0.30 to 0.60
0.30 to 0.90
1.20 Max |
0.06
0.05
0.05 |
0.06
0.05
0.05 |
31
41
44 |
20
31
38 |
10
8
8 |
3t
5t
8t |
12.0%
10.0%
8.0% |
Ns
Ns
Ns |
Ns
Ns
Ns |
|
3 |
ERW Tubes for Mechanical & General Engineering |
3601/ 1984 |
WT-160
WT-200
WT-240
WT-310 |
-
-
-
- |
-
-
-
- |
0.06
0.06
0.06
0.06 |
0.06
0.06
0.06
0.06 |
32
34
42
55 |
16
20
24
32 |
9500/ Ts
9500/ Ts
9500/ Ts
9500/ Ts |
3t
4t
6t
8t |
12.5%
12.5%
10.0%
7.5% |
Ns
Ns
Ns
Ns |
Ns
Ns
Ns
Ns |
|
4 |
ERW Tubes for Furniture |
7138/ 1973 |
- |
- |
- |
0.06 |
0.06 |
33 |
21 |
20% |
5t |
7.5% |
- |
180° over 6D Radius |
|
5 |
Square & Rectangular Hollow Section |
4923/ 1997 |
YST 210
YST 240
YST 310 |
-
-
- |
-
-
- |
0.06
0.06
0.06 |
0.06
0.06
0.06 |
34
42
46 |
21
24
32 |
12 to 20
10 to 15
8 to 10 |
Ns
Ns
Ns |
Ns
Ns
Ns |
Ns
Ns
Ns |
Squareness of corners 90° ± 2°
Radii of corners outside 3t max |