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Automotive Industry steel strip grades |
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Note that this is
a representative list and would be only a small selection of all available steels and
shows only a few of the properties.
British Standard Grade
(BSEN 10111) |
Description |
Yield Strength
N mm-2 |
Max Tensile Strength
N mm-2 |
Min % Total Elongation
80mm GL |
Composition, maximum
values |
DD11 |
Commercial quality |
170-360 |
440 |
23 |
0.12C, 0.60Mn, 0.045S, 0.045P |
DD12 |
Drawing quality |
170-340 |
420 |
25 |
0.10C, 0.45Mn, 0.035S, 0.035P |
DD13 |
Deep drawing quality |
170-330 |
400 |
28 |
0.08C, 0.40Mn, 0.03S, 0.03P |
DD14 |
Extra deep drawing quality |
170-310 |
380 |
31 |
0.08C, 0.35Mn, 0.025S, 0.025P |
British Standard Grade
(BSEN 10149) |
Description |
Yield Strength
N mm-2 |
Max Tensile Strength
N mm-2 |
Min % Total Elongation
80mm GL |
Composition, maximum
values |
S315MC |
Microalloyed formable high strength steel |
315 |
390-510 |
20 |
0.12C, 1.30Mn, 0.02S, 0.025P + Nb, V and/or
Ti |
S355MC |
Microalloyed formable high strength steel |
355 |
430-550 |
19 |
0.12C, 1.50Mn, 0.02S, 0.025P + Nb, V and/or
Ti |
S460MC |
Microalloyed formable high strength steel |
460 |
520-670 |
14 |
0.12C, 1.60Mn, 0.015S, 0.025P + Nb, V
and/or Ti |
CMn300 |
Carbon manganese high strength steel |
300 |
440 min |
26 |
0.15C, 0.90Mn, 0.006S, 0.035P |
CMn350 |
Carbon manganese high strength steel |
350 |
540 min |
20 |
0.15C, 1.50Mn, 0.006S, 0.035P |
3. Selected cold rolled
steels:
British Standard Grade
(BSEN 10130) |
Description |
Yield Strength
N mm-2 |
Max Tensile Strength
N mm-2 |
Min % Total Elongation
80mm GL |
Composition, maximum
values |
DC01 (FeP01) |
Drawing quality |
280 |
270-410 |
28 |
0.12C, 0.60Mn, 0.045S, 0.045P |
DC04 (FeP04) |
Extra deep drawing quality |
210 |
270-350 |
38 |
0.08C, 0.40Mn, 0.03S, 0.03P |
DC06 (FeP06) |
Extra deep drawing quality (interstitial
free grade) min r = 1.8 and n=0.22 |
180 |
270-350 |
38 |
0.02C, 0.25Mn,
0.02S, 0.02P, 0.30Ti |
4. Selected cold rolled high strength steels:
Grade / description |
Max Yield Strength
N mm-2 |
Min Tensile Strength
N mm-2 |
Min % Total Elongation
80mm GL |
Microalloyed formable high strength steel |
300 |
400 |
22 |
Microalloyed formable high strength steel |
350 |
430 |
20 |
Rephosphorised high strength steel |
225 |
340* |
30* |
Rephosphorised high strength steel |
255 |
380* |
28* |
Bake hardenable steel |
210 |
320* |
30* |
Bake hardenable steel |
255 |
360* |
28* |
* nearest equivalent
These grades may also be available with an electrolytic zinc or
zinc-nickel coating, up to 7.5µm per side
5. Selected cold rolled electrolytically zinc-coated steels:
British Standard Grade
(BSEN 10152) |
Description |
Yield Strength
N mm-2 |
Max Tensile Strength
N mm-2 |
Min % Total Elongation
80mm GL |
Composition, maximum
values |
DC01+ZE |
Drawing quality |
280 |
270-410 |
28 |
0.12C, 0.60Mn, 0.045S, 0.045P |
DC04+ZE |
Extra deep drawing quality |
220 |
270-350 |
37 |
0.08C, 0.40Mn, 0.03S, 0.03P |
DC06+ZE |
Extra deep drawing quality (interstitial
free grade) min r = 1.8 and n=0.22 |
190 |
270-350 |
37 |
0.02C, 0.25Mn, 0.02S, 0.02P, 0.30Ti |
Similar grades are also available with an electrolytic
zinc-nickel coating
6. Selected hot-dip galvanised steels:
British Standard Grade
(BSEN 10142) |
Description |
Max Yield Strength
N mm-2 |
Max Tensile Strength
N mm-2 |
Min % Total Elongation
80mm GL |
DX51D (FeP02G) |
Bending quality |
- |
500 |
22 |
DX52D (FeP03G) |
Drawing quality |
300 |
420 |
26 |
DX53D (FeP05G) |
Deep drawing quality |
260 |
380 |
30 |
DX54D (FeP06G) |
Special deep drawing quality (interstitial
free grade) |
220 |
350 |
36 |
These grades are available with a normal coating spangle
finish or with an iron-zinc alloy coating. Coating masses range from 100 g m-2
to 600 g m-2.
Various proprietary grades of high strength formable hot-dip galvanised
steel are also available.
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This Site is
sponsored by
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Micro-Alloyed
Steels
A
micro-alloyed steel can be defined as a carbon-manganese steel
containing deliberately added alloying elements totalling only 0.05 to
0.10%. Alloying elements which are effective in modifying steel
properties when present in such small amounts include boron, vanadium
and niobium and boron in even lesser amounts (0.005% /0.003%).
Micro-alloyed steels are manufactured in Large tonnages for high
pressure pipelines in the petroleum industry and automotive forgings.
A major
advantage of these steels is that in the case of forgings, careful
control of forge processing temperatures can eliminate subsequent heat
treatment. This is a major cost advantage particularly with certain
automotive components. Mechanical properties developed by controlled
hot working conditions are similar to those developed by conventional
hardening and tempering treatments for components where strength and
toughness are required
see
HSLA steels
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