Docol® S650MC high strength low alloy

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General Product Description

The high-strength structural steel Docol S650MC is a hot-rolled steel made for cold forming, with a minimum yield strength of 650 MPa for stronger and lighter structures. Docol S650MC meets or exceeds the requirements of S650MC in EN 10149-2. Typical applications include a wide range of heavy trucks components and parts, such as frame rails and cross-members. Docol S650MC comes in coils, slit coils and cut-to-length sheets.

Dimension Range

Hot rolled / UC: thickness 2.00-10.00 mm, width up to 1600 mm.

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

Mechanical Properties

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Thickness (mmin)	Standard	Coating	Test direction	Yield strength R_eH¹⁾ (min MPaksi)	Tensile strength R_m (MPaksi)	Elongation A₈₀²⁾ (min %)	Elongation A₅³⁾ (min %)	Min. inner bending radius for a 90° bend⁴⁾ (x t)
2.00 - 3.000.079 - 0.118	SSAB	UC	L	65094	700 - 850101 - 123	12	14	0.8
3.01 - 6.000.119 - 0.236	SSAB	UC	L	65094	700 - 850101 - 123	—	14	1.2
6.01 - 10.000.237 - 0.393	SSAB	UC	L	65094	700 - 850101 - 123	—	14	1.5

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Standard

Coating

Test direction

Yield strength R_eH¹⁾
(min MPaksi)

Tensile strength R_m
(MPaksi)

Elongation A₈₀²⁾
(min %)

Elongation A₅³⁾
(min %)

Min. inner bending radius for a 90° bend⁴⁾
(x t)

Thickness
(mmin)

2.00 - 3.000.079 - 0.118

Standard

SSAB

Coating

Test direction

Yield strength R_eH¹⁾
(min MPaksi)

65094

Tensile strength R_m
(MPaksi)

700 - 850101 - 123

Elongation A₈₀²⁾
(min %)

Elongation A₅³⁾
(min %)

Min. inner bending radius for a 90° bend⁴⁾
(x t)

0.8

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Thickness
(mmin)

3.01 - 6.000.119 - 0.236

Standard

SSAB

Coating

Test direction

Yield strength R_eH¹⁾
(min MPaksi)

65094

Tensile strength R_m
(MPaksi)

700 - 850101 - 123

Elongation A₈₀²⁾
(min %)

—

Elongation A₅³⁾
(min %)

Min. inner bending radius for a 90° bend⁴⁾
(x t)

1.2

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Thickness
(mmin)

6.01 - 10.000.237 - 0.393

Standard

SSAB

Coating

Test direction

Yield strength R_eH¹⁾
(min MPaksi)

65094

Tensile strength R_m
(MPaksi)

700 - 850101 - 123

Elongation A₈₀²⁾
(min %)

—

Elongation A₅³⁾
(min %)

Min. inner bending radius for a 90° bend⁴⁾
(x t)

1.5

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¹⁾ If R_eH is not applicable then Rp_0.2 is used. On thicknesses >8 mm the minimum yield strength may be 20MPa lower.

²⁾ A₈₀ value applies for thicknesses < 3.00 mm.

³⁾ A₅ value applies for thicknesses ≥ 3.00 mm.

⁴⁾ 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
Docol S650MC D	40 J / -20 °C29 ft-lbs / -4 °F
Docol S650MC E	27 J / -40 °C20 ft-lbs / -40 °F

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

Product

Docol S650MC D

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

40 J / -20 °C29 ft-lbs / -4 °F

Product

Docol S650MC E

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

27 J / -40 °C20 ft-lbs / -40 °F

Impact testing according to EN ISO 148-1 is performed on thicknesses ≥ 6mm. 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 %)	Nb (max %)	V (max %)	Ti (max %)
0.12	0.21 ¹⁾	2.00	0.025	0.010	0.09 ²⁾	0.20 ²⁾	0.15 ²⁾

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Si
(max %)

Mn
(max %)

P
(max %)

S
(max %)

Nb
(max %)

V
(max %)

Ti
(max %)

C
(max %)

0.12

Si
(max %)

0.21 ¹⁾

Mn
(max %)

2.00

P
(max %)

0.025

S
(max %)

0.010

Nb
(max %)

0.09 ²⁾

V
(max %)

0.20 ²⁾

Ti
(max %)

0.15 ²⁾

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¹⁾ If the material is to be hot-dip galvanized, this must be specified in the order. Galvanizing class A available upon request.

²⁾ Sum of Nb, V and Ti = max 0.22%.

The steel is grain refined.

Carbon Equivalent CET(CEV)

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Thickness (mmin)	2.00 - 10.000.079 - 0.393
Typ CET(CEV)	0.22 (0.34)

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2.00 - 10.000.079 - 0.393

Thickness (mmin)

Typ CET(CEV)

2.00 - 10.000.079 - 0.393

0.22 (0.34)

Tolerances

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

Customized dimensional and shape tolerances are available upon request.

Surface Treatments

Uncoated (UC): available as black or pickled and oiled.

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® S650MC high strength low alloy