Product : NAK80 Plastic Mould Steel
Kategori : Precipitation Hardening Steel
Standard: JIS
Grades : NAK80
Equivalent
AISI P21, GB/T 10Ni3MnCuAl, ASTM A681
Characteristic
- High precision, high mirror & surface polish
- Super clean, Vacuum-Arc Remelted steel with uniform grain structure
- Age-hardened for uniformity of hardness throughout, even in heavy sections.
- Uniform microstructure & hardness approximately 40 HRC
- Excellent dimensional stability
- When welded, NAK leaves no witness lines after re-aging.
- Uniform grain structure with no pin holes, inclusions or hard spots.
- Machines up to 20% faster than 30 HRC P20 mold steels.
- Never needs stress relieving, even after heavy machining.
- Polishes to a superior No. 1 finish, even over welded areas, etc
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Availability
Roundbar
Flat
Chemical Composition NAK80, 10Ni3MnCuAl & P21 Mold Steel
| Grade | C | Si | Mn | Ni | Cu | Mo | Al |
| NAK80 | 0.15 | 0.30 | 1.50 | 3.00 | 1.00 | 0.30 | 1.00 |
| 10Ni3MnCuAl | 0.06-0.16 | 0.40 | 1.4-1.7 | 2.7-3.3 | 0.8-1.2 | 0.2-0.5 | 0.7-1.2 |
| P21 | 0.18-0.22 | 0.2-0.4 | 0.2-0.4 | 3.90-4.25 | 0.2-0.3 | 0.15-0.25 | 1.05-1.25 |
Mechanical Properties
| Properties | NAK80 | |
| Tensile Strength (Psi) | 183,400 | |
| Yield Strength (Psi) | 147,600 | |
| Elongation in 2" (%) | 16.1 | |
| Hardness (HRc) | 40 | |
| Reduction of Area (%) | 41.9 | |
| Charpy V-notch Impact Strength (toughness): | ||
| Longitudinal (ft/lb) | 8.1 | |
| Transverse (ft/lb) | 8.5 |
Physical Properties
| Properties | NAK80 | |
| Density (×1000 kg/m3) | 7.72 | |
| Modulus of elasticity (Psi) | 30.0 x 10-6 | |
| Thermal conductivity (100oC) [W/m.K] | 41.3 | |
| Maximum Magnetic Permeability | 380 | |
| Saturated Magnetism (Gauss) | 16,360 | |
| Residual Magnetism (Gauss) | 8,500 | |
| Coercive force (Oersted) | 14.0 |
Application
Plastic molds, High-mirror polish mold, Precision long run mold, rubber molds, jigs & fixtures, and press dies. etc
Referensi:
http://www.daido.co.jp/en/products/tool/pla.html
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