![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
朗读英文资料25页第一段 Combining the relatively brittle mineral with the flexible collagen results in a composite material that has a modulus of elasticity in the order of 17–20 GPa, a tensile strength of 120–150 MPa and compressive strength of 100–160 MPa. In addition, bone can have a strain to failure value of up to 4% depending on the rate of application of load. Finding a successful bone replacement material that can in any way match these properties therefore presents an interesting challenge.