Docol® 600DH dual phase with high formability

General Product Description

Docol 600DH trip assisted dual-phase steel provides improved formability and comparable weldability to traditional dual-phase steels. Its suitability for car safety and structural components are supported not only by deep drawability but also by enhanced edge formability.

This steel undergoes a special heat treatment producing mainly two-phase structure. Ferrite that imparts unique forming properties represents one phase and martensite that accounts for the strength represents the other phase. Small amounts of bainite and retained austenite improve formability further.

Dimension Range

Cold rolled / GI: thickness 0.80-2.40 mm, width up to 1400 mm.

Slit strip and cut to length sheets are available upon request.

Grade and coating specific restrictions on available dimensions may occur.

Mechanical Properties

	Standard	Coating	Test direction	Yield strength R_p0.2 (MPa)	Tensile strength R_m (MPa)	Elongation A₈₀ (min %)	n_4-6 (min)	n_10-20/Ag (min)	BH₂ (min MPa)
Docol CR330Y590T-DH	SSAB	GI	L	330 - 430	590 - 700	26	0.20	0.16	30

Docol CR330Y590T-DH

Standard

SSAB

Coating

GI

Test direction

L

Yield strength R_p0.2
(MPa)

330 - 430

Tensile strength R_m
(MPa)

590 - 700

Elongation A₈₀
(min %)

26

n_4-6
(min)

0.20

n_10-20/Ag
(min)

0.16

BH₂
(min MPa)

30

Chemical Composition (ladle analysis)

	Coating	C (max %)	Si (max %)	Mn (max %)	P (max %)	S (max %)	Al (%)	Nb+Ti (max %)	Cr+Mo (max %)	B (max %)	Cu (max %)
Docol CR330Y590T-DH	GI	0.15	0.80	2.50	0.050	0.010	0.015 - 1.00	0.15	1.40	0.005	0.20

Docol CR330Y590T-DH

Coating

GI

C
(max %)

0.15

Si
(max %)

0.80

Mn
(max %)

2.50

P
(max %)

0.050

S
(max %)

0.010

Al
(%)

0.015 - 1.00

Nb+Ti
(max %)

0.15

Cr+Mo
(max %)

1.40

B
(max %)

0.005

Cu
(max %)

0.20

Tolerances

Hot-dip galvanized (GI): Tolerances in accordance to EN 10143.

Customized dimensional and shape tolerances are available upon request.

Coatings

The metal coating options for Docol products include:

Hot-dip zinc coating (GI) consists almost entirely of zinc (>99%). It is lead free, resulting in a small zinc spangle size. The coating provides good corrosion protection.

Grade specific availability of metal coatings for Docol products is given in the Mechanical properties table (Coating).

Coating type	Coating class	Standard	Closest in EN 10346, informative	Coating mass per side, single spot test (g/m²)	Thickness per side informative (µm)	Density (g/cm³)	Surface quality (U = unexposed, E = exposed)
GI	40/40	VDA 239-100	Z100	40 - 60 ¹⁾	5.6 - 8.5	7.1	U
GI	50/50	VDA 239-100	—	50 - 70 ¹⁾	7.0 - 9.9	7.1	U
GI	60/60	VDA 239-100	Z140	60 - 90	8.5 - 12.7	7.1	U
GI	70/70	VDA 239-100	—	70 - 100	9.9 - 14.1	7.1	U
GI	85/85	VDA 239-100	—	85 - 115	12.0 - 16.2	7.1	U
GI	115/115	VDA 239-100	Z275	115 - 155	16.2 - 21.8	7.1	U

Coating type

GI

Coating class

40/40

Standard

VDA 239-100

Closest in EN 10346, informative

Z100

Coating mass per side, single spot test (g/m²)

40 - 60 ¹⁾

Thickness per side informative (µm)

5.6 - 8.5

Density (g/cm³)

7.1

Surface quality (U = unexposed, E = exposed)

U

Coating type

GI

Coating class

50/50

Standard

VDA 239-100

Closest in EN 10346, informative

—

Coating mass per side, single spot test (g/m²)

50 - 70 ¹⁾

Thickness per side informative (µm)

7.0 - 9.9

Density (g/cm³)

7.1

Surface quality (U = unexposed, E = exposed)

U

Coating type

GI

Coating class

60/60

Standard

VDA 239-100

Closest in EN 10346, informative

Z140

Coating mass per side, single spot test (g/m²)

60 - 90

Thickness per side informative (µm)

8.5 - 12.7

Density (g/cm³)

7.1

Surface quality (U = unexposed, E = exposed)

U

Coating type

GI

Coating class

70/70

Standard

VDA 239-100

Closest in EN 10346, informative

—

Coating mass per side, single spot test (g/m²)

70 - 100

Thickness per side informative (µm)

9.9 - 14.1

Density (g/cm³)

7.1

Surface quality (U = unexposed, E = exposed)

U

Coating type

GI

Coating class

85/85

Standard

VDA 239-100

Closest in EN 10346, informative

—

Coating mass per side, single spot test (g/m²)

85 - 115

Thickness per side informative (µm)

12.0 - 16.2

Density (g/cm³)

7.1

Surface quality (U = unexposed, E = exposed)

U

Coating type

GI

Coating class

115/115

Standard

VDA 239-100

Closest in EN 10346, informative

Z275

Coating mass per side, single spot test (g/m²)

115 - 155

Thickness per side informative (µm)

16.2 - 21.8

Density (g/cm³)

7.1

Surface quality (U = unexposed, E = exposed)

U

In addition to these coating masses, asymmetric coatings and OEM coating specifications are available upon request.

¹⁾ For hot-dipped (GI, ZA, GA) hot rolled (HR) grades, the coating mass tolerance is increased to 30 g/m² by increasing the upper limit.

Surface Treatments

Hot-dip galvanized (GI): available as oiled and/or chemically passivated.

All surface treatments are in accordance with RoHS directive (2011/65/EU) and do not contain Chromium VI (Cr⁶⁺). Surface treatments provide only temporary surface protection during transportation and storage. In order to avoid corrosion damages, care must be taken to keep the products dry during transportation and storage. If they become wet, they must be separated and situated so that they are dried quickly.