Part No. ATU5125 Tubing, Tube Dia 5.000", Tube Length 80", Tube Wall 0.125 - T6061-T6

ATU5125 -- 5.000" x 0.125" Aluminum 6061-T6 Tube

Aluminum alloy 6061-T6 driveshaft tubing reduces rotating mass compared to equivalent-diameter steel. At 5.000" OD with a 0.125" wall, ATU5125 is a large-diameter thin-wall tube optimized for critical-speed performance. Larger diameters raise the driveshaft first critical speed -- the RPM at which the shaft resonates in bending -- which is why aluminum and large OD tubes are common in single-piece long-shaft builds. 6061-T6 properties relevant to driveshaft use: yield strength of approximately 35,000 psi versus 36,000-40,000 psi for DOM steel, but at roughly one-third the density. The lower density allows a larger OD tube to reach critical speed limits well above the operating range without the weight penalty of an equivalent steel tube.

• OD: 5.000"
• Wall: 0.125"
• Length: 80" stick
• Alloy: 6061-T6

Note: aluminum tube requires TIG welding with appropriate filler alloy. Yokes must be compatible with aluminum welding. Do not attempt MIG welding with steel wire. Browse weld yokes for aluminum driveshaft applications.