7005 Aluminium Alloy Bike Frame

There are two main aluminium alloys in use in the bike industry today 6061 and 7005.

7005 aluminium alloy bike frame.

They absorb bumps and road vibration. Calling a bike with an aluminium frame an alloy bike is still considered the. David caudery immediate media. 7005 is an aluminium alloy used bicycle frames due to its relative ease of welding it does not require expensive heat treating it is however harder to form making manufacture more challenging.

The tensile strength of the alloy is 7005 t6 350 mp and alloy 6061 310 mpa yield stress 290 and 275 mpa respectively. Due to its inherent hardness 7005 aluminum bikes feel rougher when you ride them. Boardman s slr 8 6 has an all new and very neatly finished 7005 aluminium frame. There will be a further designation indicating the tempering process often t6 the alloy has gone through.

The numbers indicate the alloying elements nothing to do with the strength. Pure aluminium isn t strong enough to be used in bike frames and is mixed with other materials. Generally better quality frames use 6000 series alloys as the heat treatment also instills better material properties to the frame 7000 series alloys are often used on cheaper frames. Alloy is generally used to denote an aluminium alloy.

Often considered that the aluminum alloy 6061 more suitable for bicycle frames than an alloy 7005 although the alloy 7005 and somewhat more durable. The stiffness of the 7005 frame make its ride more harsh. You might not realize it but bike frames bend when you ride the bike. Aluminium bike frames struggle to absorb vibration in the way that steel or carbon ones can.

Whilst explaining this is outside the scope of. The 6061 alloy is softer making the bike s ride more comfortable. However the lower density will result in a frame weighing around 30 less than a steel frame. Very few entry level mtbs are made of steel alloy and if they are the.

Must haves with all modern aluminium bikes are a decent full carbon fork and seatpost to help deflect. There are a few different alloys used in aluminium bikes with 6061 and 7005 being the most common.