Astm F568 Grade 8.8.3 C Fasteners Specification
Astm F568 Grade 8.8.3 C Fasteners Properties
| Chemical Properties | ||||||||
|---|---|---|---|---|---|---|---|---|
| C | Mn | P | S | Si | Cr | Ni | Cu | V |
| 0.14-0.26 | 0.76-1.39 | 0.040 Max | 0.045 Max | 0.13-0.37 | 0.27-0.53 | 0.22-0.53 | 0.17-0.53 | 0.010 Min |
| Mechanical Properties | ||||
|---|---|---|---|---|
| Yeild strength | Tensile strength | Elongation | Reduction | Hardness |
| Mpa | Mpa | % | % | HRC |
| min | min | min | min | |
| 660 | 830 | 12 | 35 | 23-34 |
| Proof Load Values, kN | ||||||
|---|---|---|---|---|---|---|
| Nominal Product Diameter & Thread Pitch | ||||||
| M20 X 2.5 | M22 X 2.5 | M24 X 3 | M27 X 3 | M30 X 3.5 | M36 X 4 | |
| Method 1 | 147 | 182 | 212 | 275 | 337 | 490 |
| Method 2 | 162 | 200 | 233 | 303 | 370 | 539 |
| M42 X 4.5 | M48 X 5 | M56 X 5.5 | M64 X 6 | M72 X 6 | M80 X 6 | |
| Method 1 | 672 | 882 | 1220 | 1610 | 2050 | 2600 |
| Method 2 | 730 | 970 | 1340 | 1790 | 2280 | 2860 |
| Heat Treatment | |||
|---|---|---|---|
| Quenched & Tempered @ 425°C | |||
| Equivalent Designation | ||
|---|---|---|
| UNS | ||
| EN number | ||
| EN Name | ||
| W.Nr. | ||
| SS | ||
| AFNOR | ||