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Overview of Mechanical Properties
Alcoa aluminum alloy drill pipe is extruded in Alcoa’s Lafayette, Indiana facility, one of the largest and most advanced extrusion mills in the world.
The Alcoa method of extrusion provides a variety of benefits:
- Offers a seamless aluminum alloy tube with integral heavy ends of attachment of the tool joint
- Body and heavy ends of each tube are extruded in one singular operation. No further upsetting is required
- Offers very smooth internal and external surfaces, excellent concentricity, precise wall thickness, and near-perfect section shapes
Mechanical Properties of 2014 Aluminum Alloy Drill Pipe
| Tensile Strength, minimum psi. | 64,000 |
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| Yield Strength, minimum psi. | 58,000 | | Elongation, minimum % in 2″ | 7 | | Shear Yield Strength, minimum psi. | 33,000 | | Brinnell Hardness, typical | 135 | | Modulus of Elasticity, typical psi. | 10.6x 10(3) |
Fatigue Performance
Steel Aluminum Alloy
Percentage Fatigue Life Percent Fatigue Life 2014
Expended in a 30 Foot Interval Expended in a 30 Foot Interval
Scatter Bands for 2014 4-1/2 in Aluminum Drill Pipe
with 4-1/2IF Tool Joints tested at Room Temperature
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