Catalogue of Seven Diamonds (920 KB) 
Way of nomination cold rolled steel in BS EN 10130-1991
- Specifying the type of production
- Name of standard (EN 10130)
- FeP sign
- Grade sign
- The sign which specifies the surface quality (A,B)
- The sign which specifies the type of surface finishing.
specification |
sign |
name |
|
It has a few defects which doesn’t affect forming and coating. |
A |
-- |
surface quality |
The surface is free of defects which causes a uniform coating. |
B |
-- |
|
Ra<0.4 μm |
b |
Bright |
Surface finish |
Ra< 0.9 μm |
g |
Semi-bright |
|
Ra<1.9 μm > 0.6 |
m |
normal |
|
Ra>1.6 μm |
r |
Rough |
Example: Sheet EN 10130-Fe P01 A m normal is a steel sheet FeP01 with A surface quality and normal surface finishing.
Chemical Composition |
Elongation |
Tensile strength |
Yield strength N/mm2 |
Validity mechanical |
De oxidation |
Grade |
||||||||
Ti |
Mn |
S |
P |
C |
T> 7/0 |
t<= 5/0 |
5/0 <t< 7/0 |
T > 7/0 |
t<= 5/0 |
5/0 <t< 7/0 |
||||
-- |
6/0 |
045/ |
045/ |
12/0 |
28 |
24 |
26 |
410-270 |
280 |
320 |
300 |
--- |
Manufacture’s discretion |
FeP01 |
-- |
45/0 |
035/ |
035/ |
1/0 |
34 |
30 |
32 |
370-270 |
240 |
280 |
260 |
6 month |
Fully killed |
FeP03 |
-- |
4/0 |
03/ |
03/ |
08/0 |
38 |
34 |
36 |
350-270 |
210 |
250 |
230 |
6 month |
Fully killed |
FeP04 |
-- |
35/0 |
025/ |
025/ |
06/0 |
40 |
36 |
38 |
330-270 |
180 |
220 |
200 |
6 month |
Fully killed |
FeP05 |
3/0 |
25/0 |
02/0 |
02/0 |
02/0 |
38 |
34 |
36 |
350-270 |
180 |
220 |
200 |
6 month |
Fully killed |
FeP06 |
Cold rolled steel standard: BS EN 10130-1991
- Sample should be choosing perpendicular to rolling direction.
- Test should be done for every 30 ton from each grade and size.
- For coils, sample should be from outer part of the coils.
- For samples which yield point is not specified, stress for 0.2% strain is assumed as yield point and for others lower yield point is used.
- Tensile strength for Fe P01(Re= 280 N/mm2) is reliable for 8 days only.