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International Mold Steel NAK55 Precipitation Hardened Mold Steel
| Category | Metal , Ferrous Metal , Tool Steel , Mold Steel |
| Manufacturer | International Mold Steel |
| Trade Name | |
| Port | Shanghai port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | International Mold Steel NAK55 Precipitation Hardened Mold Steel.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Description: NAK55 is a precipitation, or age-hardened mold steel with a through hardness of approximately 40 HRc. NAK55 is ideal for use in plastic and rubber molds and other applications where impact resistance is not critical. It is a super clean, Vacuum-Arc Remelted steel with uniform grain structure, uniform hardness and excellent dimensional stability.Unique Characteristics: Vacuum-Arc Remelt manufacturing process.40 HRc hardness.Uniform hardness throughout, even in heavy sections.When welded, NAK leaves no witness lines after re-aging.Uniform grain structure with no pin holes, inclusions or hard spots. Machines up to 50% faster than 30 HRc P20 mold steels. Never needs stress relieving, even after heavy machining.Information provided by International Mold Steel.
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Rockwell C | 40 | 40 | |
| Tensile Strength, Ultimate | 1250 MPa | 182000 psi | |
| Tensile Strength, Yield | 1010 MPa @Strain 0.200 % |
146500 psi @Strain 0.200 % |
|
| Elongation at Break | 15.6 % | 15.6 % | Elongation in 2" (longitudinal) |
| Reduction of Area | 39.8 % | 39.8 % | |
| Modulus of Elasticity | 207 GPa @Temperature 23.0 °C |
30000 ksi @Temperature 73.4 °F |
|
| Charpy Impact | 7.59 J | 5.60 ft-lb | V-Notch, Transverse |
| 9.76 J | 7.20 ft-lb | V-Notch, Longitudinal |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 11.3 µm/m-°C @Temperature 20.0 - 100 °C |
6.30 µin/in-°F @Temperature 68.0 - 212 °F |
|
| 12.6 µm/m-°C @Temperature 20.0 - 200 °C |
7.00 µin/in-°F @Temperature 68.0 - 392 °F |
||
| 13.5 µm/m-°C @Temperature 20.0 - 300 °C |
7.50 µin/in-°F @Temperature 68.0 - 572 °F |
||
| Thermal Conductivity | 41.33 W/m-K @Temperature 93.3 °C |
286.8 BTU-in/hr-ft²-°F @Temperature 200 °F |
|
| 42.19 W/m-K @Temperature 204 °C |
292.8 BTU-in/hr-ft²-°F @Temperature 400 °F |
| Component Elements Properties | Metric | English | Comments |
|---|---|---|---|
| Aluminum, Al | 1.0 % | 1.0 % | |
| Carbon, C | 0.15 % | 0.15 % | |
| Copper, Cu | 1.0 % | 1.0 % | |
| Iron, Fe | 92.95 % | 92.95 % | |
| Manganese, Mn | 1.5 % | 1.5 % | |
| Nickel, Ni | 3.0 % | 3.0 % | |
| Silicon, Si | 0.30 % | 0.30 % | |
| Sulfur, S | 0.10 % | 0.10 % |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Magnetic Permeability | <= 380 | <= 380 | |
| Magnetic Coercive Force, Hc | 14 Oe | 14 Oe | |
| Magnetic Saturation Flux Density, Bmax | 16350 Gauss | 16350 Gauss | Saturate Magnetism |
| Magnetic Remanence, Br | 8500 Gauss | 8500 Gauss | Residual Magnetism |
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