ATSM A307 Grades
A - Headed bolts, threaded rods and bent bolts intended for general applications.
B - Heavy hex bolts and studs intended for flanged joints in piping systems with cast iron flanges.
C* - Nonheaded anchor bolts, either bent or straight, intended for structural anchorage purposes. The end of a grade C anchor bolt intended to project from the concrete will be painted green for identification purposes. Permanent marking is a supplemental requirement. *As of August 2007, grade C has been replaced by specification F1554 grade 36. We will continue to supply grade C, if required by the project.
| A307 Mechanical Properties | |||
|---|---|---|---|
| Grade | Tensile, ksi | Yield, min, ksi | Elong %, min |
| A | 60 min | - | 18 |
| B | 60 - 100 | - | 18 |
| C* | 58 - 80 | 36 | 23 |
| A307 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% |
| Sulfur, max | 0.15% | 0.05% |
| A307 Recommended Hardware | |||
|---|---|---|---|
| Nuts | Washers | ||
| A307 Grades A & C* | A307 Grade B | ||
| 1/4 - 1-1/2 | 1-5/8 - 4 | 1/4/2004 | |
| A563A Hex | A563A Heavy Hex | A563A Heavy Hex | F844 |
All information derived from globally recognized specifications, subject to change, user discretion is advised.
