ASTM A453 Grade 660 Chemical Composition
Find typical requirement for ASTM A453 Grade 660 Chemical Compositions with allowable variation. Chemical analysis of raw material or finished products manufactured to ASTM A453 Grade 660 specification must comply with below analysis. The chemical composition is equivalent to Alloy A286 or UNS S66286 stainless steel used as a raw material to produce 660 bolts, studs and nuts.
| ASTM A453 Grade 660 Chemical Composition | ||
| Elements | Content, % | Allowable Variation, Over or Under, % |
| Carbon | 0.08 max | 0.01 over |
| Manganese | 2.00 max | 0.04 |
| Phosphorus | 0.04 max | 0.005 over |
| Sulfur | 0.03 max | 0.005 over |
| Silicon | 1.00 max | 0.05 |
| Nickel | 24.00 - 27.00 | 0.20 |
| Chromium | 13.50 - 16.00 | 0.20 |
| Molybdenum | 1.00 - 1.50 | 0.05 |
| Titanium | 1.90 - 2.35 | 0.05 |
| Aluminium | 0.35 | 0.05 over |
| Vanadium | 0.10 - 0.50 | 0.03 |
| Boron | 0.001 - 0.010 | 0.0004 under to 0.001 over |