Datasheet · 2026
Proto Labs Aluminum 6061-T651/T6 — CNC Material Data Sheet (2026)
Properties of 6061-T6 for the machined MP7.
- 6061
- aluminium
- material properties
Datasheet · 2026
Properties of 6061-T6 for the machined MP7.
Aluminum 6061-T651/T6 Aluminum 6061 is a versatile and widely used alloy renowned for its excellent mechanical properties and weldability. The "T6" and "T651" designations refer to specific tempering processes that enhance its strength and stress relief capabilities. Both variations of Aluminum 6061 are highly sought after in industries such as aerospace, automotive, marine, and general manufacturing due to their combination of strength, machinability, and corrosion resistance. Applications Typical applications consist of aircraft and aerospace parts, appliance fittings, automotive parts, brackets, couplings, electrical fittings and connectors, hinge pins, housing, hydraulic pistons, structural siding, and valves. Key Product Benefits • • • • • • High Corrosion Resistance Cost Effective Enhanced Strength and Stress Relief Appearance After Anodizing Excellent Machinability Electrical Conductivity Properties © 2026 Proto Labs, Inc. Property Value (Imperial) Value (Metric) Ultimate Tensile Strength 45 ksi 310 MPa Yield Stress 40 ksi 276 MPa Elongation 17% 17% Brinell Hardness 95 95 Ultimate Shearing Strength 30 ksi 207 MPa Endurance Limit – R.R. Moore Type 14 ksi 97 MPa Modulus of Elasticity 10.0 ksi x 103 68.3 GPa Nominal Density (68ºF/20ºC) 0.098 lb/in3 2.70 Mg/m3 Melting Range 1080ºF - 1206ºF 582ºC - 652ºC Specific Heat (212ºF/100ºC) 0.214 BTU/lb-ºF 896 J/kg-ºK Linear Coefficient of Thermal Expansion (68ºF - 212ºF/20ºC - 100ºC) 13.1 micro in/in-ºF 23.6 micro m/m-ºK 1 Property Value (Imperial) Value (Metric) Volumetric Coefficient of Thermal Expansion (68ºF/20ºC) 3.93 x 10-5 in3/in3-ºF 71 x 10-6 m3/m3-ºK Thermal Conductivity 97 BTU/ft-hr-ºF 167 W/m-ºK © 2026 Proto Labs, Inc. 2