Transparent Plastic Mould Tool Steel
Fushun are main manufacturer of tool steel for Transparent Plastic Mould.
What is Transparent Plastic Mould?
A transparent plastic mold is a highly specialized tooling designed for manufacturing optically clear plastic products with superior surface quality and transparency. These precision molds require exceptionally high standards of surface finish and dimensional accuracy to produce transparent parts without optical defects such as flow marks, sink marks, or internal stress patterns. The mold design incorporates sophisticated features to ensure uniform material flow, controlled cooling, and minimal internal stress development during the molding process.
The primary function of transparent plastic molds is to produce crystal-clear plastic components with optical properties, such as lenses, light guides, display screens, and transparent housings. These molds must maintain precise temperature control throughout the molding cycle to prevent any crystallization or haziness in the final product. They feature highly polished cavity surfaces, often achieving mirror-like finish levels, and incorporate advanced venting systems to eliminate any trapped air that could cause visual defects. The gating and runner systems are carefully designed to prevent material jetting and flow lines that could compromise optical clarity.
The materials used in transparent plastic molds require specific characteristics to achieve the demanding quality requirements of optical products. The mold materials must possess excellent thermal conductivity for uniform cooling, superior hardness to maintain the highly polished surfaces, and exceptional dimensional stability to preserve optical tolerances. These molds often receive specialized surface treatments and coatings to enhance their wear resistance and prevent any surface deterioration that could affect part clarity. Additionally, the mold design must account for the unique shrinkage characteristics of transparent materials and incorporate features to minimize residual stress, which can cause birefringence or optical distortion in the finished parts.
Transparent Plastic Mould Materials
| — | — | 1.2825 | 95MnWCr5 | MnCrWV |
| — | — | 1.2824 | 70MnMoCr8 | 7CrMn2Mo |
| H11 | SKD6 | 1.2343 | X37CrMoV5-1 | 4Cr5MoSiV |
| H13 | SKD61 | 1.2344 | X40CrMoV5-1 | 4Cr5MoSiV1 |
| — | — | 1.1191 | C45U | SM45 |
| — | — | — | SM50 | |
| — | — | SM55 | ||
| P20 | — | 1.2311 | 35CrMo7 | 3Cr2Mo |
| — | X38CrMo16 | 3Cr17Mo |
Chemical Composition of Transparent Plastic Mould
| Grade | C | Si | Mn | Cr | W | Mo | V |
| MnCrWV | 0.90～1.05 | 0.10～0.40 | 1.05～1.35 | 0.50～0.70 | 0.50～0.70 | 0.05～0.15 | |
| 7CrMn2Mo | 0.65～0.75 | 0.10～0.50 | 1.80～2.50 | 0.90～1.20 | 0.90～1.40 | ||
| 4Cr5MoSiV | 0.33～0.43 | 0.80～1.20 | 0.20～0.50 | 4.75～5.50 | 一 | 1.10～1.60 | 0.30～0.60 |
| 4Cr5MoSiV1 | 0.32～0.45 | 0.80～1.20 | 0.20～0.50 | 4.75～5.50 | 1.10～1.75 | 0.80～1.20 | |
| SM45 | 0.42～0.48 | 0.17～0.37 | 0.50～0.80 | ||||
| SM50 | 0.47～0.53 | 0.17～0.37 | 0.50～0.80 | ||||
| SM55 | 0.52～0.58 | 0.17～0.37 | 0.50～0.80 | — | |||
| 3Cr2Mo | 0.28～0..40 | 0.20～0.80 | 0.60～1.00 | 1.40～2.00 | 0.30～0.55 | ||
| 3Cr17Mo | 0.33～0.45 | ≤1.00 | ≤1.50 | 15.50~17.50 | 0.80～1.30 | ≤1.00 |
Properties of Transparent Plastic Mould Steel
| Grade | Annealed HBW |
| MnCrWV | ≤255 |
| 7CrMn2Mo | ≤235 |
| 4Cr5MoSiV | ≤229 |
| 4Cr5MoSiV1 | ≤229 |
| SM45 | 155～215 |
| SM50 | 165～225 |
| SM55 | 170～230 |
| 3Cr2Mo | 235 |
Available Shapes from Fushun
*Round Bar
*Flat Bar
*Block
*Plate
Contact Information
Welcome your inquiry. We will send you a free quotation within 24 hours.
