Properties

Mechanical Properties

Steel supplied will comply with the mechanical property limits below.
The values of the tensile test apply to test bars parallel to the rolling direction. 
The values of the bend test apply to test bars transverse to the rolling direction.

Tata Steel Grade Ympress S550MC
Min. Yield strength  ReH1 (N/mm²)   550
Tensile strength Rm (N/mm²)   610 - 750
Elongation (%) t < 3 13
3 ≤ t < 5 17
t ≥ 5 17
Min. bend test diameter t < 5 0.5 t
t ≥ 5 0.5 t
1. Upper yield strength or 0.2% proof stress applies.
t – material thickness in mm.
Elongation after fracture A uses test piece length L0 = 80 mm for t < 3 mm. L0 = 5.65√S0 for t ≥ 3 mm.

Impact strength

Impact tests can be performed for thicknesses ≥ 6.0 mm. Please contact us for details.


Chemical composition

Steel supplied will comply with the chemical limits below.

Tata Steel Grade Ympress S550MC
C Max. 0.1
Mn Max. 1.65
P Max. 0.02
S Max. 0.003
Si Max. 0.03
Altot Min. 0.015
Nb Max. 1 0.09
V Max. 1 -
Ti Max. 1 0.06
Mo Max. -
Cu Max. -
1. The sum of Nb, V and Ti shall be max. 0.22%.
All values are in weight%