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Aluminum Rail Cap

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6061-T6 Aluminum rail caps are extruded for seamless precision sizing throughout the full lengthof the material. The 3/4" x 3/4" square concaved base allows the round rail caps to be installed on square tubing or bar stock providing a sturdy support. Made from a lightweight material with a smooth surface, it is heat treatable, non-magnetic, and resistant to stress cracking. These aluminum rail caps are an excellent candiate for both interrior and exterrior stair and safety railling applications. 





ASTM B221-08


Most commonly used. High strength & good welding. Not good formability - If formed, needs a very gradual radius. Good machinability



Element Percentage
Al 98
Cr 0.04 - 0.35
Cu 0.15 - 0.40
Fe  0.7 max
Mg 0.8 - 1.2
Mn 0.15 max
Si 0.4 - 0.8
Ti 0.15 max
Zn 0.25 max



  Imperial Metric
Density 0.1 lb/in3 2.7 g/cc
Ultimate Tensile Strength 45,000psi 310 MPa
Yield Tensile Strength 40,000psi 276 MPa
Fatigue Strength 14,000psi 96.5 MPa
Shear Strength 30,000psi 207 MPa
Melting Point 1,080 - 1,205°F 582 - 652°C


Hardness Rockwell B60
Hardness Brinell 95

The provided chemical compositions and mechanical properties are general approximations. Please contact our Customer Service Department for material test reports.
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