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Selection of Plastic Mold Steels
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Cutting Tools
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Plastic and Application |
DAIDO
BRAND
|
Usual
Hardness |
Rating For |
| *1 |
*2 |
*3 |
*4 |
*5 |
*6 |
*7 |
Thermo
Plastics |
General |
General Uses |
PXZ |
27-34HS |
A |
C |
B |
A |
C |
B |
C |
|
Long Life Uses |
PDS3 |
26-30HRC |
B |
C |
B |
A |
C |
B |
B |
| PX4 |
30-33HRC |
B |
B |
A |
A |
B |
B |
B |
| PX5 |
30-33HRC |
A |
B |
A |
A |
B |
B |
B |
|
Mirror Polishing
Uses |
NAK55 |
37-43HRC |
A |
B |
A |
A |
B |
C |
B |
| NAK80 |
37-43HRC |
B |
A |
A |
A |
B |
C |
B |
| PAK90 |
30-34HRC |
B |
A |
A |
B |
B |
A |
B |
| MASIC |
50-54HRC |
B |
A |
A |
A |
A |
A |
A |
|
Glass Reinforcement Uses |
DH2F |
38-42HRC |
A |
B |
B |
B |
B |
B |
B |
Thermosetting
Plastics |
Corrosive
Resistant Uses |
S-STAR |
53-57HRC |
C |
A |
A |
C |
A |
B |
A |
| G-STAR |
37-43HRC |
A |
B |
B |
A |
B |
A |
B |
|
General Uses |
NAK55 |
37-43HRC |
A |
B |
A |
A |
B |
C |
B |
| DH2F |
38-42HRC |
A |
B |
B |
B |
B |
B |
B |
| DC11,DC53 |
56-62HRC |
C |
A |
A |
C |
A |
C |
A |
*1
Machinability, *2 Mirror Surface, *3 Photo etching,
*4 Weld ability, *5 Wear Resistance
*6 Strength, *7 Corrosion Resistance |
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| Application |
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Forged Products for Plastic Mold |
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Chemical Composition
|
DAIDO
BRAND |
Chemical Composition (%) |
Condition |
| C |
Si |
Mn |
Ni |
Cr |
Mo |
Other Elements |
| PXZ |
(Patent Pending) |
Tempered |
| PDS3 |
0.45 |
0.2 |
0.9 |
- |
1.1 |
0.25 |
- |
| PX4 |
(Patent Pending) |
| PX5 |
(Patent Pending) |
| NAK55 |
0.15 |
0.3 |
1.5 |
3.0 |
- |
0.3 |
Cu 1.0, Al 1.0, S 0.1 |
Aged |
| NAK80 |
0.15 |
0.3 |
1.5 |
3.0 |
- |
0.3 |
Cu 1.0, Al 1.0 |
| S-STAR |
0.35 |
0.8 |
0.5 |
- |
13.5 |
0.6 |
- |
Tempered |
| MASIC |
0.03
max. |
0.10
max. |
0.10
max. |
18.5 |
- |
5.0 |
Co 9.0, Ti 0.6 |
Solution
Treated |
| G-STAR |
0.35 |
- |
- |
- |
16.0 |
1.0 |
S 0.1 |
Tempered |
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Mirror Finish Properties
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