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COLD ROLLED
1. Coil inside diameter
Slit coils 508 mm
Slit strip 508 mm
2.
Full slab coil mass
925 mm 18 Tons
1225 mm 22 Tons
1500 mm 24 Tons
3.
Thickness (measured 40 mm from the edge)
| |
Tolerance
over or under thickness (mm) |
| |
0.5 to 0.9 |
1.0 to 1.3 |
1.4 to 2.0 |
|
1200mm |
0.08 |
0.1 |
0.13 |
4.
Width (permisable deviation from ordered width)
|
925 coil |
-0.0mm to
+5.0mm |
|
1225 coil |
-0.0mm to
+6.0mm |
|
1500 coil |
-0.0mm to
+8.0mm |
|
Slit strip |
+-0.25 |
5.
Flatness (cut lengths)
| |
Deviation
from a flat surface in 1000mm length (mm) |
| |
0.5 to 0.6 |
0.7 to 1.1 |
1.2 to 2.0 |
| |
Std. |
Special |
Std. |
Special |
Std. |
Special |
|
925mm |
12 |
5 |
10 |
4 |
8 |
3 |
|
1225mm |
15 |
6 |
12 |
5 |
10 |
4 |
|
1500mm |
19 |
8 |
17 |
7 |
15 |
6 |
6.
Camber(cut lengths)
| |
Deviation of
the side edge of the sheet from a straight line (mm) |
|
Cut Length |
1000 |
1500 |
2000 |
2500 |
3000 |
4000 |
|
Camber from
coils |
4 |
6 |
8 |
10 |
10 |
16 |
|
CTS Blanks |
to customer
specification |
7.
Length(cut lengths)
| |
Permissible
deviation from ordered length (over mm) |
|
Sheet length |
1000 |
1500 |
2000 |
2500 |
3000 |
4000 |
|
Std. deviation |
4 |
6 |
8 |
10 |
10 |
16 |
|
Special |
to customer
specification |
8.
Diagonals(cut lengths)
| |
Permissible
out of square deviation (mm) |
|
Sheet width |
1200 |
1225 |
3000 |
|
Std. Deviation |
3 |
4 |
5 |
|
Special |
to customer
specification |
Cold rolled steel is one of the best options to choose if you want to create an end product that has no hairline fractures or other problems. When steel is cold rolled, it is rolled into its dimension that the manufacturer wishes at a level that is well below scaling temperatures. Hot rolled is created when temperatures are hot enough to create the final product. In order to get a good, clean finish from your cold steel, you will need to employ a cleaner level of ingot than that of which is rolled into the product. If you are looking for fewer carbon inclusions, then steel that is cold rolled is the ideal choice for you. If you can afford it, this is the best option to suit your needs. This steel method does not come cheap, but it is the preferred steel material. Steel that has been cold rolled will often work-harden in the rolling process itself; this can lead to twisting and warping if one is not careful.
All metalwork, whether it is hot or cold rolled steel will require welding or soldering. Good craftsmanship is evident in the finish and will translate into a handsome product. Steel is a tough material when cold (of course) and when heated it turns plastic, and can be formed into the shape of your choice. Hot rolled steel is preferred in this instance, with simple profiles available for cold rolled steel. The smooth grey finish of cold rolled steel is achieved by bathing the finished product in oil, therefore the non-oxidised finished product is the actual steel in grey, and becomes as smooth as the rollers themselves allow them to be. Hot rolled steel is a very rough product, so for finer steel that can be created into a veritable work of art, select Steelrode - one of the biggest steel exporters in South Africa. Contact us today for a quality cold rolled steel product.
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