40X13 Tool Steel

40X13 Tool Steel Chemical Composition

40X13 Tool Steel Equivalent Grades

The approximate correspondence of 40X13 in the standards of various countries is as follows:

1. Russia (GOST): 40X13 tool steel
2. China (GB): 4Cr13 tool steel
3. Germany (DIN / W-Nr):X42Cr13/1.2083 tool steel
4. Japan (JIS): SUS420J2 tool steel
5. USA (AISI/ASTM):420SS tool steel
6. Sweden (ASSAB): S136 tool steel
7. Austria (BÖHLER): M310 tool steel

40X13 Tool Steel Specifications

40X13 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. 40X13 Tool Steel Electroslag Remelting (ESR): Premium option with higher purity and isotropic properties for critical applications.

40X13 Tool Steel Smelting process

Smelting process: adopting electric furnace or converter melting, strictly controlling the ratio of carbon and chromium, and reducing inclusions through vacuum refining

Heat treatment process:

1. Normalising: approx. 840-860 °C, air cooling
2. Quenching: about 1020-1050 ℃ oil cooling or air cooling
3. Low temperature tempering: 150-250 ℃ for 1-2 times to improve toughness and control cracked areas

Post-treatment: Surface polishing, grinding, nitriding or tempering can be performed to obtain the final dimensions and properties.

40X13 Tool Steel Physical Properties

1. Density: 7.75 g/cm³
2. Specific heat capacity: 0-100 ℃ about 460 J/kg-K
3. Thermal conductivity: 100 ℃ about 28.1 W/m-K; 500 ℃ about 28.9 W/m-K
4. Coefficient of linear expansion: 0-100 ℃ about 10.5 × 10-⁶/K; 0-500 ℃ about 12.0 × 10-⁶/K
5. Resistivity: ≈0.59 μΩ-m (20 °C)
6. Modulus of elasticity: ≈215 GPa (20℃)

40X13 Tool Steel Mechanical & Performance Properties

1. Hardness: quenched and tempered to ≥50 HRC (tempered condition hardness).
2. Tensile strength: up to 500-955 MPa, yield strength of about 454-595 MPa.
3. Impact toughness: tempered state KV about 43 J.
4. Corrosion resistance: containing chromium ~ 13% can form a passivation layer, the ability to cope with weak corrosive environment good.
5. Wear resistance: medium hardness and high chromium cast into a hard martensitic structure, so that it has good wear resistance.
6. Dimensional stability: low distortion after heat treatment and good surface finish.

40X13 Tool Steel Product Applications

1. 1. Knife manufacturing: kitchen knives, industrial cutting knives, gauges, etc.
   2. Springs and precision parts: instrument springs, valve discs, compressor parts.
   3. Corrosive environment parts: parts for moderate corrosion applications in aerospace and chemical equipment.
   4. Medical devices: some blades and surgical tools.