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Automotive key applications

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Strain [%]

Stre

ss [M

Pa]

Docol 1400 M

Docol 800 DP

DC04 Deep drawing steel

Aluminum 6063-T6

Dual Phase steel

Martensitic steel

Tensile test results

Elongation

Docol 1200M, minimum elongation 3% (A80)

Demonstration of ductility of a tube in Docol 1200M)

5

Forming limit diagram

+ -

+

6

Elongation Tensile samples, A80 vs ”A2”

80 mm

0

0,1

0,2

0,3

-0,2 -0,1 0 0,1 0,2 0,3

Maj

or S

trai

n

Minor strain

A80 in %

FLC (local strain “A2” in %.

Elongation vs Forming Limit Curve Docol 1000DP

8 06/09/2012

Tensile strength and elongation for different steels

MPa A80, %

9 06/09/2012

Tensile strength, elongation and FLD0 Te

nsile

stre

ngth

(MP

a)

A80

, FLD

0, 2m

m (%

)

39

29 25

21 17

14

MPa A80, %

0

0,1

0,2

0,3

-0,2 -0,1 0 0,1 0,2 0,3

Maj

or S

trai

n

Minor strain

Elongation vs Forming Limit Curve Docol 1000DP

11 06/09/2012

Bending

600 DP 800 DP

1200 M 1000 DP

1400 M

DC06

12 06/09/2012

Rollforming

Docol 1400 M

Minimum internal radius in bending = 3xt

Internal radius obtained in rollforming = 1xt

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3D-Rollforming?

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