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FS633 super mirror high corrosion resistant plastic mold steel
The quality level grade is similar to M333Relying on fugang's decades of aerospace and air force technology, by the Northeast Special Steel Group mold steel chief special Domestic, national mold steel labeling main drafters development, Fugang National
Technology Center organized production,Using the national advanced production process, the comprehensive performance reaches the international first-class level.
Alloy composition
| C | Si | Mn | Cr | Ni | - | Other |
| 0.32 | 0.35 | 0.5 | 13.0 | 0.3 | +N | Special add |
Material characteristics
- Vacuum degassing refining + protective atmosphere electroslag remelting (quatnary slag system)
- High uniformity of material structure, high purity of material
- Reasonable composition design, very low S, P content
- Excellent mirror polishing, dot etching and etch effect
- Excellent machining effect and corrosion resistance
- The quality level is similar to M333
Main application
- Preferred material for light guide plate
- Plastic mould with high mirror requirement
- There is a requirement for dot etching plastic model
- Production of transparent plastic products plastic mold
- There is a requirement for anti-corrosion, rust protection plastic moulds
Service performance
Heat treatment process
- Quenching temperature：1020℃～1040℃，oil coolingoil cooling
- Tempering temperature：200℃～300℃，HRC48～52 580℃～600℃，HRC32～36
- Round steel: Maximum diameter
- Flat steel: Maximum size 21-120*60-910MM;
- Forgings: Maximum size 100-600* 310-810mm; Goods meet the needs of users.
1. Select the appropriate tempering temperature according to the user's needs. Low temperature tempering can obtain strength, hardness,The best combination of anti-corrosion properties; High temperature tempering can eliminate the internal stress to the greatest extent.
2. For heat treatment of high temperature working molds, in order to avoid tempering during the use of molds, the tempering temperature should be higher than the working temperature of molds.
3.It is suggested that the size of the raw material should be the same as the final size of the mold to obtain the best comprehensive performance.
4.Pay attention to avoid the machining defects caused by carbon deposition in the parts requiring EDM. In the process of EDM, obvious burn marks or holes and pits are caused by carbon deposition on the mold processing surface, which are often misunderstood as defects such as sand holes and pores of the material itself. Therefore, attention should be paid to the selection of discharge conditions during EDM processing, to prevent bad chip discharge, and to do auxiliary work to avoid local excessive electricity.
