Product manufactured by hot lamination, with a transversal section in the shape of an "U". It is provided in 6 m or 12 m wide and 1 ton or 2 ton bundles.
These products are used in general mechanic construction, metal structures, highway signaling, agricultural machines and implements, and other applications.
Main characteristics of the product per ASTM A6/01:
| Commercial Designation |
Height
(mm) |
Flange width
(mm) |
Nominal flange width(mm) |
Nominal Linear Mass(kg/m) |
| |
Nominal |
Min. |
Max. |
Nominal |
Min. |
Max. |
|
|
| 3" x 1st core |
76,20 |
74,61 |
78,58 |
35,81 |
32,63 |
38,99 |
4,32 |
6,10 |
| 3" x 2nd core |
38,05 |
34,87 |
41,23 |
6,55 |
7,44 |
| 4"x 1st core |
101,60 |
100,01 |
103,98 |
40,23 |
37,05 |
43,41 |
4,67 |
8,04 |
| 4"x 2nd core |
41,80 |
38,62 |
44,98 |
6,27 |
9,30 |
| 6"x 1st core |
152,40 |
150,81 |
154,387 |
48,77 |
45,59 |
51,95 |
5,08 |
12,20 |
| 6" x 2nd core |
51,66 |
48,48 |
54,84 |
7,98 |
15,62 |
The mechanical properties of these products meet ABNT/NBR 7007/02, ASTM A36 and ASTM A572 standards, and their dimensional characteristics meet ASTM A6.
Main characteristics of product according to ABNT/NBR 7007/02:
| Grade of Steel |
| |
MR 250 (similar to ASTM A36) |
AR 350 (similar to ASTM A572 Grade 50) |
AR 415 (similar to ASTM A572 Grade 60) |
| Minimum Yield Limit (MPa) |
250 |
350 |
415 |
| Minimum Resistance Limit (MPa) |
400 |
450 |
520 |
| Maximum Resistance Limit (MPa) |
560 |
- |
- |
| Minimum Elongation (L0 = 200mm) (%) |
20,0 (*) |
18,0 (*) |
16,0 (*) |
(*) reductions to the minimum elongation values are permitted according to the width of the product, when a rectangular sample is used.