ASME Bolting Material Specifications
| High Strength |
Intermediate Strength |
Low Strength |
Nickel and Special Alloy |
| Spec. |
Grade |
Spec. |
Grade |
Spec. |
Grade |
Spec. |
Grade |
| A193 |
B7 |
A193 |
B5 |
A193 |
B8 Cl.1 |
B164 |
... |
| A193 |
B16 |
A193 |
B6 |
A193 |
B8C Cl.1 |
|
|
| |
|
A193 |
B6X |
A193 |
B8M Cl.1 |
B166 |
... |
| A320 |
L7 |
A193 |
B7M |
A193 |
B8T Cl.1 |
|
|
| A320 |
L7A |
|
|
|
|
|
|
| A320 |
L7B |
A193 |
B8 Cl.2 |
A193 |
B8A |
B335 |
N10665 |
| |
|
|
|
|
|
|
N10675 |
| |
|
A193 |
B8 Cl.2B |
|
|
|
|
| A320 |
L7C |
A193 |
B8C Cl.2 |
A193 |
B8CA |
|
|
| A320 |
L43 |
A193 |
B8M Cl.2 |
A193 |
B8MA |
B408 |
... |
| |
|
A193 |
B8M Cl.2B |
|
|
|
|
| |
|
A193 |
B8T Cl.2 |
A193 |
B8TA |
|
|
| A354 |
BC |
|
|
|
|
B473 |
... |
| A354 |
BD |
A320 |
B8 Cl.2 |
A307 |
B |
|
|
| |
|
A320 |
B8C Cl.2 |
|
|
B574 |
... |
| A540 |
B21 |
A320 |
B8F Cl.2 |
A320 |
B8 Cl.1 |
|
|
| A540 |
B22 |
A320 |
B8M Cl.2 |
A320 |
B8C Cl.1 |
|
|
| A540 |
B23 |
A320 |
B8T Cl.2 |
A320 |
B8T Cl.1 |
|
|
| A540 |
B24 |
|
|
A320 |
B8T Cl.1 |
|
|
| |
|
A449 |
|
|
|
|
|
| |
|
A453 |
651 |
|
|
|
|
| |
|
A453 |
660 |
|
|
|
|
General Notes :
- Bolting material shall not be used beyond temperature limits specified in the govering code.
- ASME Boiler and Pressure Vessel Code, Section 2 materials may also be used provided the requirements of the ASME specifications are identical or more stringent than the corresponding ASTM specifications for the Grade, Class or Type listed.