STUDBOLTS HEX HEAD BOLT HEAVY HEX NUT SCREWS ASTM A193 B16, ASTM A194  4
Mn
P
S
Si
Cr
Mo
Al
V
0.36-0.47
0.45-0.70
0.035 Max
0.04 Max
0.15-0.35
0.80-1.15
0.50-0.65
0.015Max
0.25-0.35
Tensile Strength min, ksi ( MPa)
Yield Strength. min, 0.2% offset, Ksi ( MPa)
Elongation in 4D min %
Reduction of Area min %
Hardness max
21/2" and under
125(860)
105(725)
18
50
321HB or 35 HRC
over 21/2" to 4"
110(760)
95(655)
17
45
302HB or 33 HRC
over 4" to 7"
100(690)
85(586)
16
227HB or 29 HRC
