Tensile Ranges

The various tensile ranges for the different specifications of hardened and tempered materials are designated with the reference symbols P to Z as follows :-

Ref. Symbol Tensile Strength N/mm² Tensile Strength Tons/Sq. In.
P 550-700 35-45
Q 625-775 45-50
R 700-850 45-55
S 775-925 50-60
T 850-1000 55-65
U 925-1075 60-70
V 1000-1150 65-75
W 1075-1225 70-80
X 1150-1300 75-85
Y 1225-1375 80-90
Z 1550 min. 100 min.
Bright Bar Steel image

Further Resources