Properties

Mechanical Properties

The values shown for the mechanical properties of HR CP800-UC are for test pieces taken parallel to the rolling direction unless otherwise stated.
 

    EN 10338: 2015 VDA 239-100 Tata Steel
    HDT760C HR660Y760T-CP HR CP800-UC Typical
Yield strength Rp0,2 1 (N/mm²)   660 - 830 660 - 820 700
Tensile strength Rm (N/mm²) N/mm² ≥ 760 760 - 960 790
Elongation after fracture A
L0 = 50 mm
% - ≥ 11 16
Elongation after fracture A
L0 = 5,65√S0
% ≥ 12 ≥ 13 17
Elongation after fracture A
L0 = 80 mm
% ≥ 10 ≥ 10 14
1. Lower yield strength or 0.2 % proof stress applies.
2. These mechanical property values are quoted for the transverse rolling direction.
Hole expansion coefficient values can be supplied (although not as part of the production release test) – please contact us for details.
 

Chemical composition

Tata Steel supplies the following cast analysis with maximum values in weight percentages unless shown otherwise:
 

    HR CP800-UC Typical
C Max. 0.18
Mn Max. 2.5
Si Max. 1
P Max. 0.08
S Max. 0.015
Altot   0.015 - 1.2
Cr+Mo Max. 1
Nb+Ti Max. 0.25
V Max. -
B Max. 0.005