Biomedical Engineering Reference
In-Depth Information
Table 5.2
Mechanical properties for common bone repair materials. (NB values for metal alloys are highly subjective to processing
technique, which was not always specified in the data source. In general, one can expect that the lower values of strength and higher
values of elongation correspond to annealed specimens, whereas the higher ranges of strength and lower ranges of elongation apply
to cold-worked alloys.) Data compiled from various tables in Ratner
et al
., 2004, pp 28, 69, 142, 157; Callister Jr., 2000a, pp 800-803; and
Kokubo, 2008, pp 12, 79, 226, 288
Material
Tensile/bending
Yield strength
Compressive
Elastic modulus
Toughness
Elongation to
(MPa·m
1/2
)
strength (MPa)
(MPa)
strength (MPa)
(GPa)
fracture (%)
Bone (cortical)
50-150
30-70
160-250
4-30
2-12
0-8
Bone (cancellous)
10-20
-
23
0.2-0.5
-
-
Stainless steel
480-1000
200-800
-
190-210
20-95
20-55
Ti alloys
900-1200
830
450-1850
110-120
44-66
18
CoCr alloys
400-1900
450-1600
480-600
210-250
120-160
10
Hydroxyapatite
115-120
-
350-400
80-110
1.0
-
Glass-ceramic AW
220
-
1080
118
2.0
-
Alumina
280-600
-
4500
350
3-6
0
Zirconia
800-1500
-
1990
210-220
6.4-10.9
-
Polyethylene
(incl. UHMWPE)
23-48
21-28
20
0.6-2.2
-
350-525
PMMA
35-80
54-73
80
2.2-4.8
0.7-1.6
0.5-6
UHMWPE = ultra high molecular weight polyethylene
