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一、镁合金与塑料的性能比较
|
特点 |
Unit |
AZ91D |
ABS |
PET30% |
PBT30% |
Nylon30% |
Poly |
|
Hi-heat |
Glass |
Glass |
|
Carbonate |
|
密度 |
g/cm3 |
1.81 |
1.07 |
1.61 |
1.72 |
1.38 |
1.23 |
|
降伏强度 |
Mpa |
160 |
39 |
152 |
117 |
172 |
|
|
抗拉强度 |
Mpa |
204 |
43 |
193 |
172 |
193 |
104 |
|
延展率 |
% |
3 |
16.5 |
4.5 |
3 |
6 |
- |
|
弹性率 |
Gpa |
45 |
2.1 |
8.3 |
10.3 |
8.9 |
6.7 |
|
吸水性 |
% |
0 |
0.33 |
0.05 |
0.07 |
0.7 |
- |
|
热传导性 |
W/m.k |
51 |
0.28 |
0.28 |
0.29 |
0.33 |
0.2 |
|
熔点 |
centigrade |
598 |
260 |
260 |
260 |
260 |
- |
|
散热系数 |
μ.m/m |
26 |
76.5 |
27 |
25 |
34.5 |
- |
|
刚性 |
|
100 |
7.8 |
21 |
24 |
26 |
- |
通过上表的镁合金与塑料的性能比较 镁合金的机械性能，弹性率，热传导性，钢性都优于塑料。
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二、镁合金与工程塑料的性能比较 |
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Spec. |
Impact |
Elastic |
Thermal Conductivity |
EMI |
Recycle |
Thickness |
Price |
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Gravity |
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Comparison |
|
g/cm3 |
Strength |
Modules |
W/m.k |
Compatibility |
Arrangement |
Limitation |
(same place) |
|
镁
AZ91D |
1.81 |
2ft/lb |
45×104 |
51(at: 25i) |
good |
yes |
Pressure |
1 |
|
Cast |
|
0.61-3.8mm |
|
Hemi-solid |
|
L/D=100-150 |
|
0.6-15mm |
|
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工程 |
1.81- |
1-8ft/lb |
5-15×104 |
0.2 |
N/A |
no |
L/D=100-150 |
0.8-3 |
|
塑料 |
1.36 |
2mm above |
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