Titanium spring for bicycle rear shock

Titanium rear shock spring for bike Specifications ItemCompress Length(Inch)Spring force(lb/Inch)Free Length(Inch)ID(mm)Max OD(mm)M400X6.25X2.752.754006.253655M450X6.25X2.752.754506.253655M300X6.5X33.003006.503655M350X6.75X33.003506.753655M400X6.75X33.004006.753655 Material Grade 5 (Ti-6Al-4V) Why we choose that? Excellent Features Low density,High specific strength,excellent corrosion resistance,Rustless.Better Anti-fatigue performance, Good heat treatment performance,Lower Elastic modulus.Higher strength-to-weight ratic,Higher Elastic Limit,Higher Fatigue limit,Higher impact toughness andHigher resonant frequency.Mechanical Property of Titanium Grade 5 Tensile strength895 965Yield strength825 875Elongation15Reduction of area47Density4.42g/cm­­3 Because of these excellent features of titanium,the titanium springs can be made less coils,lower weight,Smaller Volume than the steel springs. Though Ti 15333,Ti 38644 and Timetal LCB will be much better than Grade 5 titanium,but because of their higher price,they are not very popular. Because of the Price Quality of Grade 5,It is very popular for titanium springs. Application: The titanium springs are designed for the rear shock springs of bicycle. The density of titanium is about 60% of steel,not only titanium spring can reduce the total weight of the bike,but also it won’t get rust and won’t be corroded.