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Knowledge Article

Mold Steel Types Comparison (P20 vs H13 vs S136)

Mold steel selection directly affects durability, precision, and surface quality. Choosing the wrong material leads to premature wear and production failure.

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CNC Technology Hub

Machine components, spindle systems, axis structures, accuracy and automation technology.

Core Topic

Surface Finish

Related Processes
Technical References

Introduction

Mold steel selection directly affects durability, precision, and surface quality. Choosing the wrong material leads to premature wear and production failure.

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Introduction

Mold steel selection directly affects durability, precision, and surface quality. Choosing the wrong material leads to premature wear and production failure.

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P20 Steel

Features:

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Pre-hardened steel

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Good machinability

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Cost-effective

Applications:

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Low-volume molds

Industrial plastic parts

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H13 Steel

Features:
High thermal resistance

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High toughness

Good for hot work
Applications:
Die casting molds
High-temperature injection molds

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S136 Steel

Features:
Excellent corrosion resistance
Mirror polishing capability
High precision stability
Applications:

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Medical molds

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Optical molds

High-end plastic parts

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Comparison Summary

P20 → EconomyH13 → Heat ResistanceS136 → Precision + Optical Grade

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Conclusion

Mold steel selection must match application requirements, not cost alone.

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FAQ

Common questions about electronics CNC machining.

What is Mold Steel Types Comparison (P20 vs H13 vs S136)?

Mold steel selection directly affects durability, precision, and surface quality. Choosing the wrong material leads to premature wear and production failure.

Which CNC machines are commonly used for this topic?

HYR vertical machining centers, gantry machining centers and 5 axis machining centers are selected according to mold size, material hardness, tolerance and surface finish requirements.

How does this topic connect to mold manufacturing?

It supports the mold manufacturing process by improving precision, stability, surface quality, cycle time or long-term production reliability.

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