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Technical Solutions for Stamping Die Steel Selection
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Stamping dies operate under conditions of high-speed impact, high pressure, and abrasive wear. Friction between the punch and die bushings and the sheet metal generates heat, readily causing galling, chipping, or plastic deformation. Selecting tool steels such as D2, DC53, or SKH51 (M2) can extend die life while reducing downtime and per-unit production costs.
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Guide to Selecting Tool and Die Steel
The selection of tool steel depends on plate thickness and material properties, requiring a balance between wear resistance and toughness.
1. Plate Thickness
Thin Plates (< 1.57 mm): Failure manifests as abrasive wear at the cutting edge. Select high-carbon, high-chromium steels like D2 or SKD11, which offer high wear resistance.
Thick plates (> 4-6 mm): As plate thickness increases, both instantaneous penetration force and lateral thrust rise, heightening the risk of chipping and fracture. Toughness takes precedence over wear resistance. DC53 or high-speed steel offers superior toughness compared to D2, mitigating early failure.
2. Material
Carbon Steel: Common grades like AISI 1010 exhibit low abrasiveness. D2 is often selected for long-cycle production to balance cost and service life.
Stainless Steel and Advanced High-Strength Steel (AHSS): Austenitic stainless steels (e.g., 304) and AHSS exhibit significant work hardening and high shear strength, making them prone to galling. Select M2 (SKH51) or DC53. M2’s red hardness and compressive strength resist high contact pressures; coated D2 or 8% Cr grades resist galling failure.
Performance Comparison Table
| Grade | Typical Hardness (HRC) | Wear Resistance | Toughness | Stability |
| D2 / SKD11 | 58 – 62 | High | Low (Prone to chipping) | High |
| DC53 (8% Cr) | 60 – 64 | High (Excellent adhesive wear resistance) | High (Finer carbide distribution than D2) | High |
| M2 / SKH51 | 62 – 65 | Very High (MC + M6C carbides) | Moderate/Good (Better than D2) | Very High |
FAQ
Selection depends primarily on plate thickness and material properties, requiring a balance between wear resistance and toughness. Choosing D2, DC53, or SKH51 (M2) can extend die life and reduce production costs.
For thin plates (< 1.57 mm), failure typically manifests as abrasive wear at the cutting edge. Select high-carbon, high-chromium steels like D2 or SKD11, which provide the necessary high wear resistance.
For thick plates (> 4-6 mm), prioritize toughness over wear resistance to mitigate chipping and fracture caused by lateral thrust. DC53 or high-speed steel is recommended for superior toughness compared to D2.
Stainless steel is prone to galling and work hardening, so it is best used with steels like M2 (SKH51) or DC53. M2 offers red hardness and compressive strength, while DC53 and coated D2 resist galling failure.
D2 offers high wear resistance but is prone to chipping due to low toughness. DC53 offers high wear resistance (especially against adhesive wear) and high toughness, thanks to a finer carbide distribution.
Progressive dies require materials with high fatigue strength and resistance to tempering to handle heat accumulation. D2 tool steel or powder metallurgy (PM) steel is selected to ensure dimensional consistency under millions of strokes.
Fine blanking involves high hydrostatic pressure, requiring steel with high compressive yield strength and resistance to cold welding. Common selections include high-speed steel or coated cemented carbide.
Trimming dies require high toughness to prevent chipping under combined shear and bending stresses. However, they must also possess sufficient hardness to delay edge dulling while removing flash and excess material.
Technical Support
If your specific requirements for hardness, toughness, or wear resistance are not covered in our FAQ, please contact our technical department.