STUDBOLTSÂ HEX HEAD BOLTÂ HEAVY HEX NUTÂ SCREWS
ASTM A193 B7 B7M, Â ASTM A194 2H
ASTM A320 L7 L7M
|
| |
Chemical Requirement
AISIÂ 4140Â 4142Â 4145 |
| Grade |
C |
Mn |
P |
S |
Si |
Mo |
Cr |
B7,
B7M |
|
|
Max |
Max |
|
|
|
0.37-0.49 |
0.65-1.10 |
0.035 |
0.040 |
0.15-035 |
0.15-0.25 |
0.75-1.20 |
L7, L7M |
0.38-0.48 |
0.75-1.00 |
0.035 |
0.040 |
0.15-0.35 |
0.15-0.25 |
0.80-1.10 |
|
| |
Mechanical properties
|
| Grade |
Diameter |
Tensile Strength kpsi (Mpa) |
Yield Strength 0.2% Offset
kpsi (Mpa) |
Elongation % |
Hardness
MAX |
|
|
min |
min |
min |
HBS |
HRC |
B7 |
<’2-1/2
‘2-1/2’-4’
4’ - 7’ |
125
115
100 |
105
95
75 |
50
50
50 |
- |
35
35
35 |
B7M |
<’2-1/2 |
100 |
80 |
50 |
235 |
B99 |
L7 |
<’2-1/2 |
125 |
105 |
50 |
|
20-28 |
L7M |
<’2-1/2 |
100 |
80 |
50 |
235 |
B99 |
|
| We can provide our quality A193 B7 B7M L7 L7MÂ Â A194 2H Stud bolts with any world know third party inspection Certifications as following to make ensure the best quality |
