DF-3 Tool Steel

DF-3 Tool Steel Chemical Composition

DF-3 Tool Steel Equivalent Grades

The approximate correspondence of DF-3 in the standards of various countries is as follows:

1. China (GB):9CrWMn
2. Germany (DIN / W-Nr):100MnCrW4/1.2510
3. Japan (JIS):SKS3
4. USA (AISI/ASTM):O1
5. Sweden (ASSAB):DF-3
6. Austria (BÖHLER):K460
7. Russia(GOST/ГОСТ):9XBГ

DF-3 Tool Steel Specifications

DF-3 Tool Steel Customized Options

1. Custom Surface Conditions: Black; Sandblasted; Grinded; Turned/Machined/Milled/Bright
2. Custom Chemical Composition: Capable of producing standard grades such as GB, DIN, ASTM, JIS, etc. Chemical composition can be custom-produced individually.
3. Custom Specifications: Round steel (diameter) and plates (thickness, width) can be custom-produced.
4. Professional packaging for long-term storage or extreme transportation conditions: Including black paint spraying on all sides, plastic film wrapping, anti-rust oil spraying, and delivery in wooden cases.
5. Custom production according to samples or technical agreements.
6. DF-3 Tool Steel Electroslag Remelting (DF-3 ESR): Premium option with higher purity and isotropic properties for critical applications.

DF-3 Tool Steel Smelting process

DF-3 Tool Steel Physical Properties

1. Density: approximately 7.67 g/cm³ (at room temperature); 400 °C dropped to approximately 7.61 g/cm³.
2. Elastic modulus: approximately 193 GPa at 20 °C; About 173 GPa at 400 °C.
3. Coefficient of thermal expansion: 20-200 °C approximately 12.4×10⁻⁶/K; Up to 400 °C, it is approximately 13.4×10⁻⁶/K.
4. Thermal conductivity: approximately 20 W/m·K at room temperature, and can reach 23 W/m·K at 400 °C.
5. Specific heat capacity: approximately 0.460 J/g·°C (20 °C).

DF-3 Tool Steel Mechanical & Performance Properties

1. Extremely strong wear resistance: The high-carbon and high-chromium structure forms a large number of carbides, making it particularly suitable for cold working scenarios with high wear resistance requirements
2. High compressive strength: After heat treatment, the hardness varies from HRC 56 to 65, and the compressive strength can reach 3100 MPa (at 62 HRC).
3. Good permeability and dimensional stability: Uniform hardening during heat treatment, strong resistance to tempering softening
4. Medium toughness: Moderate impact toughness, not suitable for extremely high impact environments.

DF-3 Tool Steel Product Applications

1. 1. Blanking dies, precision shearing, trimming tools (thin plates).
   2. Cold extrusion and cold drawing deep drawing dies.
   3. Bending dies, deep drawing dies, rolling dies.
   4. Ceramic forming molds, plastic grinding molds, measuring tools, guide rails, nozzles, etc.