ASTM A307 Grade A Bolts
The ASTM A307 specification covers carbon steel bolts and studs ranging from 1/4" through 4" diameter. This is your everyday, run of the mill bolt specification often manufactured using A36 round bar. RELIABLE PIPES & TUBES LTD. Manufacturer,Stocks & Supplies Bolts,Studs,Threaded Bars as Specified under ASTM A307 Grade A.
Mechanical Properties
| Grade | Tensile, ksi | Yield, min, ksi | Elong %, min |
|---|---|---|---|
| A | 60 min | -- | 18 |
| B | 60 - 100 | -- | 18 |
| C* | 58 - 80 | 36 | 23 |
Chemical Properties
| Element | Grade A | Grade B |
|---|---|---|
| Carbon, Max | 0.29% | 0.29% |
| Manganese, Max | 1.20% | 1.20% |
| Phosphorus,Max | 0.04% | 0.04% |
| Sulphur, Max | 0.15% | 0.05% |
