SW318H-P Innovative Plastic Mold Steel
Product Details
Manufacturing Process
Blast furnace iron → 300-ton converter (LD) → ladle refining (LF) → vacuum degassing (RH) → hydrogen protection ingot casting → multi-directional forging → quenching + tempering pre-hardening → finished product inspection → qualified label storage
Product Features
Good hardness uniformity, polishing and etching performance, suitable for all kinds of automotive interior leather grain or polished parts
Excellent thermal conductivity, improve injection molding productivity
Can be treated by ammoniation
Excellent machining performance
Applications (A, B plates)
Large-section plastic parts molds for household appliances, such as TV case cover molds, air conditioner shell molds;
Automotive interior parts molds, such as instrument panels, seat molds, etc.
Chemical Composition
| SW318H-P | C | Si | Mn | Cr | Ni | Mo |
| Ingredients not disclosed | ||||||
Supply Specifications and Supply Hardness
| Thick | Width | Long | Recommended Hardness | Ultrasonic sound detection level |
| ≤660mm | ≤1650mm | 1500~6000mm | 28~36HRC、30~36HRC | SEP1921-1984 E/e |
Physical Properties
Linear Expansion Coefficient | 20~100℃ | 20~200℃ | 20~300℃ | Thermal Conductivity | 20℃ | 350℃ | 700℃ |
| 11.6 | 13.0 | 14.2 | 41.2 | 39.5 | 35.9 |
Purity
| Type A (Sulfide) | Type B (Sulfide) | Type C (Silicate) | Type D (Oxide) | ||||
| Thin：1.0 | Coarse：0.5 | Thin：1.0 | Coarse：0.5 | Thin：1.0 | Coarse：0.5 | Thin：1.0 | Coarse：0.5 |
