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1 x Atlas Group 4 Halfshaft 770mm Long - 18 Tooth
01057
All Blackline Halfshafts Group 1 and Group 4 are manufactured from 4340 allot steel and have induction hardened teeth to Rockwell 50 HRC specifications. 4340 is about twice as strong as 1040 ( the material which OEM halfshafts are normally manufactured from). It has a high degree of ductility to absorb shock loadings of abrupt acceleration, taking some loads off the differential and CWP. However, it has a very high yield strength to sustain high torque loads without failure. 4340 is the ideal halfshaft material.
The following charts show the yield and tensile strength, and the yield torque for a typical 30mm diameter 4340 halfshaft.
Grade | Yield Strength (Psi) | Tensile Strength (Psi) | Material | Yield Torque (lb-ft) |
1340 | 63,000 | 102,000 |
|
|
1040 | 106,000 | 120,000 | 1040 | 2,835 |
1541 | 164,000 | 181,000 | 1541 | 3,818 |
4140 | 136,000 | 160,000 |
|
|
4340 | 210,000 | 228,000 | 4340 | 4,889 |
