Allowable Shear Stresses for Involute Splines
Material | Hardness | Maximum Allowable Shear [psi] |
Brinell | Rockwell C |
Steel | 160 - 200 | --- | 20 000 | |
Steel | 230 - 260 | --- | 30 000 | |
Steel | 302 - 351 | 33 - 38 | 40 000 | |
Surface-hardened Steel | --- | 48 - 53 | 40 000 | |
Case-hardened Steel | --- | 58 - 63 | 50 000 | |
Through-hardened Steel (Aircraft Quality) | --- | 42 - 46 | 45 000 | |