Mold steel grade selection determines hardware mold quality, stability and service life. P20, S136 and Cr12MoV are mainstream stamping die materials, covering cost-effective production, high-gloss appearance and high-wear mass production scenarios.

1. Basic Overview & Core Performance Features

1.1 P20 Mold Steel (Pre-hardened Plastic & Hardware Mold Steel)

Introduction: P20 is a pre-hardened, cost-effective mold steel with stable machining and uniform texture. It requires low maintenance, ideal for medium and low-batch hardware molds.
Service Life: 30,000–80,000 shots
Advantages: Low cost, easy processing, good toughness
Disadvantages: Ordinary wear and corrosion resistance
Application Scenarios: Standard precision molds, home appliance hardware, budget custom molds and medium-batch non-corrosive parts.
 

1.2 S136 Mold Steel (Stainless Mirror Polish Mold Steel)

Introduction: S136 is a stainless mold steel with excellent corrosion resistance and mirror polishing performance. It keeps cavity smooth and defect-free for long-term stable production.
Service Life: 80,000–200,000 shots
Advantages: Rust-proof, corrosion-resistant, high mirror finish
Disadvantages: Higher cost than P20
Application Scenarios: High-precision appearance hardware, electronic parts, mirror-finish products and humid working environments.
 

1.3 Cr12MoV Mold Steel (High Wear-Resistant Stamping Die Steel)

Introduction: Cr12MoV is a high-hardness, ultra-wear-resistant cold-work steel. It withstands high-frequency stamping, resisting deformation and abrasion for mass production.
Service Life: 150,000–300,000 shots
Advantages: Super wear resistance, high hardness, stable for mass production
Disadvantages: Poor rust resistance, no ultra-high mirror polishing
Application Scenarios: Large-volume stamping, blanking, thick material punching and automotive hardware molds.
 

2. Mold Steel Selection Comparison Table

P20: Budget option for standard, medium-batch mold projects.

S136: Premium steel for high-gloss, anti-rust and high-precision molds.

Cr12MoV: Ultra-wear-resistant steel for high-frequency, large-scale stamping production.
 

3. Conclusion

Proper mold steel grade selection optimizes mold cost, quality and efficiency. Select P20 for cost-effective medium batches, S136 for high-precision appearance molds, and Cr12MoV for high-wear mass stamping production.

We offer custom hardware mold solutions, including professional steel selection, mold design and precision machining according to your batch size and surface requirements.