Docol® 600FB: Hot-rolled advanced high-strength steel

General Product Description

Docol 600FB is a modern hot-rolled advanced high strength steel with a matrix of ferrite or strengthened ferrite containing bainite or strengthened bainite and with a refined grain size.

The steel grade is well suited for cold formed automotive components such as wheels, chassis components and different structural reinforcements. Formability is very good, especially in hole expansion.

Docol HR440Y580T-FB meets the requirements of HR440Y580T-FB according to VDA 239-100.

Dimension Range

Hot rolled / UC: thickness 2.00-4.00 mm, width up to 1600 mm.

Hot rolled / GI: thickness 2.00-5.00 mm, width up to 1450 mm.

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

Mechanical Properties

	Standard	Coating	Test direction	Yield strength R_p0.2 (MPa)	Tensile strength R_m (MPa)	Elongation A₈₀ (min %)	Elongation A₅ (min %)	BH₂ (min MPa)
Docol HR440Y580T-FB	VDA 239-100	UC, GI*	L	440 - 600	580 - 700	15	17	30

Docol HR440Y580T-FB

Standard

VDA 239-100

Coating

UC, GI*

Test direction

L

Yield strength R_p0.2
(MPa)

440 - 600

Tensile strength R_m
(MPa)

580 - 700

Elongation A₈₀
(min %)

15

Elongation A₅
(min %)

17

BH₂
(min MPa)

30

^*Available upon request.

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 HR440Y580T-FB	UC, GI*	0.18	0.50	2.00	0.050	0.010	0.015 - 2.00	0.15	1.00	0.010	0.20

Docol HR440Y580T-FB

Coating

UC, GI*

C
(max %)

0.18

Si
(max %)

0.50

Mn
(max %)

2.00

P
(max %)

0.050

S
(max %)

0.010

Al
(%)

0.015 - 2.00

Nb+Ti
(max %)

0.15

Cr+Mo
(max %)

1.00

B
(max %)

0.010

Cu
(max %)

0.20

* Available upon request.

Tolerances

Hot-rolled (UC): Tolerances in accordance to EN 10051.

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.

Galvannealed coating (GA) is a zinc-iron alloy coating having an iron content of approximately 10%. Galvannealed is produced by post-heat treatment in continuous hot-dip coating process. Galvannealed provides excellent resistance weldability and corrosion protection of painted products.

Galfan coating (ZA) is a zinc-aluminium alloy coating having the eutectic composition approximately of 95% Zn and 5% Al. Galfan is produced in continuous hot-dip coating process. Galfan has better anticorrosive and forming properties than conventional hot-dip zinc coating (GI).

Electrogalvanized coating (EG) is applied continuously by electro deposition. The coating consists of zinc (>99%). Electrogalvanized steel is characterized by its excellent surface quality and uniform coating thickness.

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)
GI	40/40	VDA 239-100	Z100	40 - 60 ¹⁾	5.6 - 8.5
GI	50/50	VDA 239-100	—	50 - 70 ¹⁾	7.0 - 9.9
GI	60/60	VDA 239-100	Z140	60 - 90	8.5 - 12.7
GI	70/70	VDA 239-100	—	70 - 100	9.9 - 14.1
GI	85/85	VDA 239-100	—	85 - 115	12.0 - 16.2
GI	115/115	VDA 239-100	Z275	115 - 155	16.2 - 21.8
GA	40/40	VDA 239-100	ZF100	40 - 60 ¹⁾	5.6 - 8.5
GA	50/50	VDA 239-100	ZF120	50 - 80	7.0 - 11.3
ZA	95	EN 10346	ZA95	—	7.0 -
ZA	130	EN 10346	ZA130	—	10.0 -
EG	25/25	EN 10152	—	12 -	1.7 -
EG	50/50	EN 10152	—	29 -	4.1 -
EG	75/75	EN 10152	—	47 -	6.6 -
EG	100/100	EN 10152	—	65 -	9.1 -

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

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

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

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

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

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

Coating type

GA

Coating class

40/40

Standard

VDA 239-100

Closest in EN 10346, informative

ZF100

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

40 - 60 ¹⁾

Thickness per side informative (µm)

5.6 - 8.5

Coating type

GA

Coating class

50/50

Standard

VDA 239-100

Closest in EN 10346, informative

ZF120

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

50 - 80

Thickness per side informative (µm)

7.0 - 11.3

Coating type

ZA

Coating class

95

Standard

EN 10346

Closest in EN 10346, informative

ZA95

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

—

Thickness per side informative (µm)

7.0 -

Coating type

ZA

Coating class

130

Standard

EN 10346

Closest in EN 10346, informative

ZA130

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

—

Thickness per side informative (µm)

10.0 -

Coating type

EG

Coating class

25/25

Standard

EN 10152

Closest in EN 10346, informative

—

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

12 -

Thickness per side informative (µm)

1.7 -

Coating type

EG

Coating class

50/50

Standard

EN 10152

Closest in EN 10346, informative

—

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

29 -

Thickness per side informative (µm)

4.1 -

Coating type

EG

Coating class

75/75

Standard

EN 10152

Closest in EN 10346, informative

—

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

47 -

Thickness per side informative (µm)

6.6 -

Coating type

EG

Coating class

100/100

Standard

EN 10152

Closest in EN 10346, informative

—

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

65 -

Thickness per side informative (µm)

9.1 -

Docol metal coated products are available with surface quality for unexposed applications.

In addition to these coating masses, OEM specific coatings and single sided EG coatings 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

Uncoated (UC): available as oiled.

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.