DATA SHEET: 11-02-03 GB8420 DOMEX
Domex 650 MC
Hot rolled, extra high strength, cold forming steel
Page 1/2
PRODUCT
Domex cold forming steels are thermo-mechanically rolled in DIMENSION RANGE
modern plants where the heating, rolling and cooling processes Domex 650 MC is available in the range of sizes tabulated
are carefully controlled. below in as rolled or pickled condition with mill edge.
The chemical analysis, consisting of low levels of carbon For material with trimmed edges, the width is reduced by
and manganese has precise addition of grain refiners such as 35 mm.
niobium, titanium or vanadium. This together with a clean Some exceptions may occur.
structure, makes Domex Steels the most competitive alternative
for cold formed and welded products. Thickness (mm) Width (mm) Length (mm)
Domex 650 MC with designation D and E meet and exceed
the demands for steel S650 MC in EN-10149-2. 2.00 - (3.00) 1000 - 1035 1500 - 13000
3.00 - (4.00) 885 - 1300 1500 - 13000
APPLICATION
4.00 - (5.00) 885 - 1450 1500 - 13000
The extra high strength steel grades are used in applications
such as truck chassis, cranes and earthmoving machines. In 5.00 - (6.00) 885 - 1600 1500 - 13000
these applications, the high strength of the steels is used to save 6.00 - (7.00) 885 - 1550 1500 - 13000
weight and/or to increase the payload.
7.00 - (8.00) 885 - 1500 1500 - 13000
As a result of this and the good formability of the steels, the
total costs can be reduced. 8.00 - 10.00 885 - 1300 1500 - 13000
IMPACT STRENGTH
The Charpy V-notch test is carried out according to
EN 10045-1.
Designation Test temperature Energy level
B Not impact tested
D - 20 ºC 40J
E - 40 ºC 27J
1) Other test temperatures and impact strengths are available subject to special agreement.
MECHANICAL PROPERTIES
BENDABILITY
Yield strength Tensile strength Elongation on failure
Nominal sheet thickness, t
< 3 mm > 3 mm
ReH N/mm2 Rm N/mm2 A80% A5 % <3 mm 3 mm <t <6 mm >6 mm
min min - max min min
Min. recommended 0.8 xt 1.2 xt 1.5 xt
650 700 - 880 12 14 bending radius (<90º)
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DATA SHEET: 11-02-03 GB8420 DOMEX
Domex 650 MC
Hot rolled, extra high strength, cold forming steel
Page 2/2
WELDING There are a large number of matching or over matching filler
The low contents of carbon, phosphorus and sulphur enable all metals that can be used for welding of Domex 650 MC, which
conventional welding methods to be readily used for Domex gives a weld that can meet the same minimum tensile strength
650 MC. No preheating is necessary. A narrow heat affected requirements as the base metal. Some examplesof different
zone with a somewhat lower hardness is formed immediately filler metals that can be used are tabulated below.
adjacent to the weld. However, if normal welding parameters
and methods are used, the heat affected zone is of no practical HEAT TREATMENT
significance. Stress relief annealing should be carried out within the tem-
Tensile test pieces taken across the weld can meet the same perature range of 530 - 580 °C. Heat treatment above this
minimum tesile strength requirements as the base metal. range, e.g. normalizing and hot forming, reduces the strength
If the stresses acting on the weld are low also under-match- and should be avoided.
ing filler metals can be used.
CHEMICAL COMPOSITION
C% Si % Mn % P% S% Al % Nb % V% Ti %
max max max max max min max max max
0.12 0.101) 2.00 0.025 0.010 0.015 0.092) 0.202) 0.152)
1) If the material is to be hot-dip galvanized, this must be specified in the order.
2) Sum of Nb, V and Ti = 0,22% max.
EXAMPLES OF DIFFERENT MATCHING AND OVER MATCHING FILLER METALS
MMA GMAW Manufacturer
Cored electrode Wire electrode
OK 75.75 OK Tubrod 14.03 OK AristoRod 13.29 ESAB
- - OK AristoRod 69 ESAB
Filarc 118 - - ESAB
Maxeta 110 Elgacore M690 - ELGA
TENACITO 75 Fluxofil 42 Carbofil NiMoCr Oerlikon
The particulars in this data sheet are correct at the time of going to print and are TECHNICAL SERVICE AND INFORMATION
intended to give general guidance for the use of the product. Subject to changes arising
Knowledge Service Center will be pleased to assist with addi-
from continual product development. The information and data must not be regarded
as guaranteed values, unless specially confirmed in writing. tional information concerning this product and other products
from SSAB.
SSAB EMEA AB
SE-781 84 Borlänge
Sweden
Tel +46 243 700 00
Fax +46 243 720 00
help@ssab.com
www.ssab.com
