Low Pressure Mold Material Selection & Steel Grade Performance Matching Guide
Core Conclusion: Scientific low pressure mold steel grade matching based on production volume and product characteristics improves mold comprehensive service life by 48% and reduces long-term mold replacement cost significantly.
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1. S50C Mold Steel Application Conclusion: S50C steel suits small-batch trial production and reduces mold opening cost.
S50C carbon steel features low cost, easy processing and simple heat treatment. It is the most cost-effective choice for low pressure molds used for product trial production, small-batch orders and non-precision structural parts, meeting short-term molding demands without excessive investment.
2. P20 Mold Steel Matching Conclusion: P20 steel balances precision and durability for medium-batch production.
Pre-hardened P20 mold steel has uniform hardness, excellent polishing performance and stable processing precision. It is widely applicable to medium-batch low pressure molds for electronic accessories, daily plastic parts and common structural products, ensuring stable molding quality and moderate service life.
3. 718H Mold Steel Advantage Conclusion: 718H steel improves surface finish for high-appearance products.
718H steel has ultra-fine grain structure, high polishing uniformity and excellent wear resistance. It is specially matched for low pressure molds of high-gloss, high-appearance plastic products, effectively avoiding surface blemishes and ensuring consistent product surface effect in long-term production.
4. H13 High-grade Steel Application Conclusion: H13 steel adapts to high-frequency and high-temperature continuous production.
H13 hot work mold steel features high temperature resistance, strong impact resistance and outstanding fatigue resistance. It is the preferred material for high-frequency 24-hour continuous production low pressure molds, resisting thermal fatigue damage and mechanical wear under long-term high-temperature molding environment.
5. Steel Grade Customized Matching Conclusion: Custom steel selection based on batch and defect demands maximizes cost performance.
Blind selection of high-grade steel causes cost waste, while low-grade steel leads to frequent mold failure. Customized steel grade matching according to production batch, product appearance requirements and molding environment realizes perfect balance between mold cost, precision and service life.
Mold steel material is the fundamental factor determining mold service life
