Comparison between MIM and other processes
| Characteristics |
MIM |
P/M |
Die Casting |
Investment Casting |
Machining |
|
|
High |
Low |
High |
Fair |
High |
|
|
0.5 mm |
1mm |
0.8mm |
2mm |
0.5 mm |
|
|
Fine
1 μ m Ra |
Coarse |
Medium |
Medium 5 μm Ra |
Fine |
|
|
Good |
Fair |
Poor |
Fair |
Good |
|
|
Many |
Average |
Few |
Average |
Many |
|
|
95~100% |
< 95% |
99~100% |
99~100% |
99~100% |
|
|
Average |
High |
Average |
Average |
High |
|
|
Good |
Poor |
Fair |
Good |
Good |
|
|
High |
High |
High |
Fair |
Low |
|
|
Average |
Low |
Low |
Average |
High |
Suggested Tolerance for MIM parts
| Dimensions in mm |
Suggested Tolerance |
| 25.0 |
+ / - 0.100 |
| 12.0 |
+ / - 0.050 |
| 6.0 |
+ / - 0.040 |
| 3.0 |
+ / - 0.030 |
| 1.0 |
+ / - 0.030 |
Typical properties
| Metal Types |
Density (g/cm3) |
Tensile Strength (MPa) |
Elongation (%) |
Hardness |
Magnetic response |
| 316L |
>7.5 |
500 |
40 |
HRB 50 ~ 60 |
N/A |
17-4PH
(As-Sintered) |
7.5 |
900 |
6 |
HRC 23 ~ 26 |
低
LOW |
17-4PH
(Heat-Treated) |
7.5 |
1190 |
5 |
HRC 33 ~ 40 |
低
LOW |
4605
(As-Sintered) |
7.5 |
440 |
15 |
HRB 70 ~ 80 |
中
Average |
4605
(Quenched & Tempered) |
7.5 |
1655 |
2 |
HRC 48 ~ 52 |
中
Average |
| 4605 Modified |
7.5 |
1800 |
8 |
HRC 48 ~ 53 |
中
Average
|
| 1010 |
7.6 |
700 |
12 |
HRB 70 ~ 80 |
高
Good
|
SKD-11 (D2)
(Heat-Treated) |
7.7 |
800 |
< 1% |
HRC 58 ~ 63 |
中
Average |
| 420 |
7.2 |
1200 |
1~2 |
HRC 46 ~ 50 |
中
Average |
| 440C |
7.6 |
800 |
< 1% |
HRC 50 ~ 55 |
中
Average |
| Kovar |
>8.1 |
Thermal Expansion Coefficient (CTE): 5.5x10 -6m/m/K |
中
Average
|
Comparison of Specific Strength
| Alloy Types |
Specific Strength |
| MIM4605 |
240 |
| MIM 17-4PH |
160 |
| Die Cast Al |
120 |
| Die Cast Zh |
60 |
|
