S460MC High-strength steels for cold-forming,thermomechanically-rolled

S460MC High-strength steels for cold-forming,thermomechanically-rolled

Usage
The steel grades of the S315MC to S460MC S700MC series are used for cold-formed components of the most varied designs.
Their fields of application include the manufacture of Longitudinal beams,frames,Cold-pressed parts,Cold-rolled sections and Structural pipes.The user of these steel grades must make sure that his calculation, design and processing methods are appropriate for the material. The forming process used must be suitable for the intended application and comply with the state-ofthe-
art; it is of fundamental importance to the processing behaviour of these steel grades. These steel grades offer excellent bending, flanging, cold-bordering and folding properties in both longitudinal and transverse direction. The bending radii specified below should be observed asq
minimum values.

The Chemical Properties of S460MC:

Analysis max. By [%]	IS 2062 Fe410WA
C	0.12
Mn	1.60
S	0.015
P	0.025
Si	0.50
Al	0.015
Ti	0.15
Nb	0.09
V	0.20

The merchanical Properties of S460MC:

Deacription	IS 2062 Fe410WA
Tensile Strength min.(MPa)	520-670MPa
Yield Stress min.(MPa)	≥460
Percent Elongation min. <3mm ≥3mm	≥14% ≥17%

Heat treatment
Normalised and stress relief annealing above 580 °C with long holding times results in a reduction of yield strength and tensile strength as compared to the ‘asdelivered’condition which is why such heat treatments should be avoided. It also follows that these steel grades are not suitable for hot-forming. If low-voltage annealing is necessary to compensate the welding stresses, the recommended annealing time between 530 °C and 580 °C is 30 minutes for all product thicknesses and steel grades.

Welding
These steel grades can be welded both manually and using automatic equipment by means of all electrical welding processes provided the general technical rules are observed. No major hardness increases appear in the heat-affected zone. Preheating is not necessary under normal welding
conditions and down to workpiece temperatures of +5 °C. Below +5 °C, pre-heating to 150 °C is recommended.
The welding wires and electrodes approved in the respective strength category must be used as filler metals.In addition to this, the general meaning.

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