United States · SAE
Class 4.6
SAE J 1199:2001 — Mechanical and Material Requirements for Metric Externally Threaded Steel Fasteners
Chemical composition
wt% · log scale- min – max range
- typical value
Mechanical properties
value range by conditionChemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.55 | |||
| P | 0.48 | |||
| S | 0.58 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| fasteners, 5 < d < 36 mm | ≥240 | ≥400 | ≥22 Elongation L0=4 x d | HV 120–180 HRB；HR 67–87 HRB |