Docol® 600FB ferritic-bainitic

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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

Docol HR​440Y​580T-​FB

Standard
VDA 239-100
Coating
UC, GI*
Test direction
L
Yield strength Rp0.2
(MPa)
440 - 600
Tensile strength Rm
(MPa)
580 - 700
Elongation A80
(min %)
15
Elongation A5
(min %)
17
BH2
(min MPa)
30

*Available upon request.

Chemical Composition (ladle analysis)

Docol HR​440Y​580T-​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

Coating type
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
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
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
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
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
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
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
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
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
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
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
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
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
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 -

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).

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.

Fabrication and Other Recommendations

For information concerning fabrication, see SSAB´s brochures on www.ssab.com or consult Tech Support.

Appropriate health and safety precautions must be taken when bending, welding, cutting, grinding or otherwise working on the products.

Docol® Ferritic-Bainitic steel product offer

Docol® 600FB ferritic-bainitic

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