Aluminum 6061-T6 Christian Bushnell Christian Bushnell Joshua Higgins Joshua Higgins Eric Lemont Eric Lemont Harold Mason Harold Mason Christopher Michaud Christopher Michaud Josh Quint Josh Quint

Presentation Format Climbing Cams Climbing Cams Examine Trigger Examine Trigger Material Selection Material Selection Aluminum 6061-T6 Properties Aluminum 6061-T6 Properties How it is made? How it is made? Other applications Other applications

Climbing Cams Cams are inserted in crevices while climbing and act as holds Cams are inserted in crevices while climbing and act as holds They are an environmentally friendly alternative to punching holes They are an environmentally friendly alternative to punching holes

Trigger Function- Beam with distributed load and two point loads Function- Beam with distributed load and two point loads Objective- High strength, low cost Objective- High strength, low cost Constraints- High fracture toughness, low density Constraints- High fracture toughness, low density

Examining Graphs Strength vs. Relative cost Strength vs. Relative cost Factoring in fracture toughness aluminum alloys come out on top Factoring in fracture toughness aluminum alloys come out on top

1000 Series 99% pure aluminum 99% pure aluminum Weak Weak Good conductor Good conductor Ductile Ductile Aluminum foil Aluminum foil

2000 Series 4% Copper 4% Copper Poor corrosion resistance Poor corrosion resistance Used in aircraft and rivets Used in aircraft and rivets

3000 Series 1% Manganese 1% Manganese Ductile Ductile Corrosion resistant Corrosion resistant Used in roofing panel and cookware Used in roofing panel and cookware

4000 Series Aluminum plus Silicon Aluminum plus Silicon Low melting point Low melting point Used in welding wire Used in welding wire

5000 Series 3% Magnesium plus 0.5% Manganese 3% Magnesium plus 0.5% Manganese Strong Strong Able to be work hardened Able to be work hardened Resistant to corrosion in a marine atmosphere Resistant to corrosion in a marine atmosphere Used in cans Used in cans

6000 Series Aluminum plus Magnesium and Manganese Aluminum plus Magnesium and Manganese Good Formability Good Formability Corrosion resistant Corrosion resistant Medium strength Medium strength 6061 is the most versitile 6061 is the most versitile

7000 Series Aluminum plus 6% zinc, Magnesium and Manganese Aluminum plus 6% zinc, Magnesium and Manganese Very strong Very strong Used in aircraft Used in aircraft

Aluminum 6061-T6 Composition Composition Copper0.15% to 0.4 % Silicon0.4% to 0.8% Iron0.7% Manganese0.15% Magnesium0.8% to 1.2% Zinc0.25% Chromium0.4% to 0.35% Titanium0.15%

Properties Density= 2.7g/cm^3 Density= 2.7g/cm^3 Ultimate Tensile Strength= 310 Mpa Ultimate Tensile Strength= 310 Mpa Tensile Yield Strength= 275 Mpa Tensile Yield Strength= 275 Mpa Elongation at break= 12% Elongation at break= 12% Modulus of Elasticity= 69 Gpa Modulus of Elasticity= 69 Gpa Melting Point= 582C to 652C Melting Point= 582C to 652C Fatigue strength= 95 Mpa Fatigue strength= 95 Mpa Fracture Toughness= 29 Mpa x m^.5 Fracture Toughness= 29 Mpa x m^.5 Poisson’s Ratio= 0.33 Poisson’s Ratio= 0.33

How it is made Aluminum and alloying elements are mixed at high temperatures Aluminum and alloying elements are mixed at high temperatures Aged for 8 hours at 350 F then air cooled, this is what makes it T-6 tempered Aged for 8 hours at 350 F then air cooled, this is what makes it T-6 tempered

Other Applications Bar ends Bar ends Bicycle sprockets Bicycle sprockets

Other Applications Knifes Knifes Rims Rims

References roperty/metals/555.asp roperty/metals/555.asp roperty/metals/555.asp roperty/metals/555.asp