HBD 420 Tool Steel
High-Chromium Tool Steel
HBD 420 mold steel is a martensitic stainless steel, similar in composition to S136, with high chromium content for enhanced corrosion resistance. It offers good hardness, wear resistance, and is frequently used in plastic manufacturing molds due to its balance of toughness and durability.
Technical Specifications
Download DatasheetFe (Balance), Cr 12.0–14.0, C 0.15–0.4, Mn ≤ 1.0, Si ≤ 1.0 (GB/T 20878-2007)
15–53 µm (GB/T 19077-2016)
~ 7.85 g/cm³ (GB/T 3850-2015)
> 99.9% (GB/T 3850-2015)
≥ 6 µm (GB/T 40389-2021)
1,750 ± 100 MPa (GB/T 228.1-2015)
1,900 ± 100 MPa (GB/T 228.1-2015)
7 ± 2 % (GB/T 228.1-2015)
48 ± 2 HRC (GB/T 230.1-2018)
3 Hours at 550 °C, Air Cooling
HBD 150, HBD 200, HBD 200Pro, HBD 400, HBD 500, HBD 600, HBD 800, HBD 1600
Besides the listed systems, the material can also be used with third-party systems that meet its requirements. Parameters must be developed separately.
Key Features and Applications
Key Features
- Combines hardness, corrosion resistance and wear resistance.
- Suits plastic injection molds.
- Reaches 48 HRC hardness with heat treatment.
Applications
- Plastic injection molds and mold inserts.
- Cutting and forming tools exposed to wear.
