Steel Strip grades used in the Automotive Industry

Automotive Industry steel strip grades
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.

1. Hot rolled steels:

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

2. Selected hot rolled high strength steels:

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 7.5┬Ám 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.