Docol® S900MC high strength low alloy

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General Product Description

The high-strength structural steel Docol S900MC is a hot-rolled steel made for cold forming, with a minimum yield strength of 900 MPa. Docol S900MC meets or exceeds the requirements of S900MC in EN 10149-2. Docol S900MC is provided as cut-to-length sheets with excellent thickness accuracy and surface quality. Typical applications include a wide range of components and parts for heavy trucks.

Dimension Range

Docol S900MC is available as cut to length sheets with mill edge in thicknesses of 3.00 - 10.00 mm, widths up to 1600 mm and lengths up to 13 meters.

Mechanical Properties

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Thickness (mmin)	Yield strength R_eH¹⁾ (min MPa)	Tensile strength R_m (MPa)	Elongation A₅ (min %)	Min. inner bending radius for a 90° bend²⁾ (x t)
3.00 - 8.000.118 - 0.315	900	930 - 1200	8	3.0
8.01 - 10.000.315 - 0.3937	900	930 - 1200	8	3.5

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Yield strength R_eH¹⁾
(min MPa)

Tensile strength R_m
(MPa)

Elongation A₅
(min %)

Min. inner bending radius for a 90° bend²⁾
(x t)

Thickness
(mmin)

3.00 - 8.000.118 - 0.315

Yield strength R_eH¹⁾
(min MPa)

900

Tensile strength R_m
(MPa)

930 - 1200

Elongation A₅
(min %)

Min. inner bending radius for a 90° bend²⁾
(x t)

3.0

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Thickness
(mmin)

8.01 - 10.000.315 - 0.3937

Yield strength R_eH¹⁾
(min MPa)

900

Tensile strength R_m
(MPa)

930 - 1200

Elongation A₅
(min %)

Min. inner bending radius for a 90° bend²⁾
(x t)

3.5

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The mechanical properties are tested in the longitudinal direction.

¹⁾ If R_eH is not applicable then Rp_0.2 is used.

²⁾ For both longitudinal and transverse direction.

Impact Properties

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Product	Min. impact energy for longitudinal testing, Charpy V 10x10 mm test specimen ¹⁾
Docol S900MC	27 J / -40 °C

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Min. impact energy for longitudinal testing,
Charpy V 10x10 mm test specimen ¹⁾

Product

Docol S900MC

Min. impact energy for longitudinal testing,
Charpy V 10x10 mm test specimen ¹⁾

27 J / -40 °C

¹⁾ Impact testing according to EN 10149-2 ( -20 °C /minimum 40J) is available if specified at the time of order.

Impact testing according to EN ISO 148-1 is performed on thicknesses ≥ 5mm. The specified minimum value corresponds to a full-size specimen.

Chemical Composition (heat analysis)

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C (max %)	Si (max %)	Mn (max %)	P (max %)	S (max %)	Al_tot (min %)	Nb (max %)	V (max %)	Ti (max %)
0.10	0.25	1.30	0.020	0.010	0.015	0.05 ¹⁾	0.05 ¹⁾	0.07 ¹⁾

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Si
(max %)

Mn
(max %)

P
(max %)

S
(max %)

Al_tot
(min %)

Nb
(max %)

V
(max %)

Ti
(max %)

C
(max %)

0.10

Si
(max %)

0.25

Mn
(max %)

1.30

P
(max %)

0.020

S
(max %)

0.010

Al_tot
(min %)

0.015

Nb
(max %)

0.05 ¹⁾

V
(max %)

0.05 ¹⁾

Ti
(max %)

0.07 ¹⁾

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¹⁾ Sum of Nb, V and Ti = max 0.22%.

The steel is grain refined.

Carbon Equivalent CET(CEV)

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Thickness (mmin)	3.00 - 7.990.118 - 0.315	8.00 - 10.000.315 - 0.3937
Typ CET(CEV)	0.25 (0.50)	0.27 (0.53)

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3.00 - 7.990.118 - 0.315

8.00 - 10.000.315 - 0.3937

Thickness (mmin)

Typ CET(CEV)

3.00 - 7.990.118 - 0.315

0.25 (0.50)

8.00 - 10.000.315 - 0.3937

0.27 (0.53)

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Tolerances

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

Thickness tolerances 1/2 of EN 10051 category D.

Customized dimensional and shape tolerances are available upon request.

Surface Treatments

Uncoated (UC): available as rolled or pickled and oiled or pickled-dry. As pickled and oiled and pickled-dry up to 5mm thickness.

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.

Delivery Conditions

Docol S900MC is supplied in as rolled surface condition or as pickled surface condition. The product is thermomechanically rolled.

Fabrication and Other Recommendations

Welding, bending and machining

Docol S900MC has good welding, cold forming and cutting performance.

Docol S900MC is a cold forming steel not suited for use at temperatures above 400°C since the material may then lose its guaranteed properties.

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® S900MC high strength low alloy