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STUDBOLTS聽 HEX HEAD BOLT聽 HEAVY HEX NUT聽 SCREWS
ASTM A193 B8R ,B8RA. |
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| Chemical Requirement |
ASTM A193 B8R B8RA |
聽
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
Nitrogen |
Columbium
+ Tanalum |
V |
0.06 Max |
4.00 - 6.00 |
0.040 Max |
0.030 Max |
1.00 Max |
20.50 - 23.50 |
11.50 -13.50 |
1.50 - 3.00 |
0.20 - 0.40 |
0.10 - 0.30 |
0.10 - 0.30 |
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| Mechanical properties |
CLASS IC: B8R |
聽
Dia |
Heat Treatement |
Tensile
Strength
min, ksi
(MPa) |
Yield
Strength. min,
0.2% offset, Ksi
(MPa) |
Elongation in
2"
min % |
Reduction of
Area
min % |
Hardness
max |
All diameters |
Carbide Solution Treated |
100(690) |
55(380) |
35 |
55 |
271 HB
or 28 HRC |
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CLASS IC: B8RA
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聽
Dia |
Heat Treatement |
Tensile
Strength
min, ksi
(MPa) |
Yield
Strength. min,
0.2% offset, Ksi
(MPa) |
Elongation in
2"
min % |
Reduction of
Area
min % |
Hardness
max |
All diameters |
Carbide Solution Treated in the finished condition |
100(690) |
55(380) |
35 |
55 |
271 HB
or 28 HRC |
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