Tensile Strength Ranges

Home » Tensile Strength Ranges

Tensile strength for the various specifications of hardened and tempered material in BS 970 are designated with the reference symbols P to Z.

Reference 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	1550min	100min
*1 N/mm2 = 1MPa

Can we help?