2009年12月25日星期五

Known bicycle materials (2)

The yield strength, tensile strength
The yield strength: is the limit of elastic deformation, also called the yield point. Increasing stress to a certain degree of plastic deformation, as is bent.
Tensile strength: refers to the increase in stress is not only, also be plastic deformation is pulled.
The tensile strength of the material by bicycle in the bicycle
Tensile strength (MPa, N/mm ^ 2)

SCM415 (cr) 834 MuGang
6061 aluminum alloy (6,000 department) of more than 100 occasions heat
Have the occasions (T6) heat. 246

7005 (aluminum) have heat treatment of 7,000 of occasions (T6) 345 above

7075 (especially hard alloy aluminum heat, aircraft) occasions over 230
Have the occasions (heat) 1107. T6

CPTi (pure titanium) have heat occasions (T6) 1107
The use of more pure titanium is as follows:
PTT800 800
Grade4 588-1065
UTT75 1065

3-2.5 Ti Al - 2.5 V (3%), Ti alloy 685 above

6-4Ti (6% 4V Ti Al alloy) - the limitation of occasions (heat) 1160
The occasion without heat-treatment 980

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