DIN 17440 Grade X38Cr13 soft annealed (+A)

DIN 17440 Grade X38Cr13 soft annealed (+A)

DIN 17440 Grade X38Cr13 soft annealed (+A) introduction

Properties:
- in hardened state resistant to water and steam
- in annealed or high tempered state corrosion resitance is not sufficient
- application in hardened state with fine grounded or polished surface
- application temperature: 200 °C
Application
- for manufacturing cutting tools (knife blades, scissors, surgical instruments)
- spherical for bearings, wear resistant control elements and parts for pumps, spring, plunger, srews

DIN 17440 Grade X38Cr13 soft annealed (+A) general

Property Temperature Value
Density 20.0 °C Density of 7.7 - 7.71 g/cm³

DIN 17440 Grade X38Cr13 soft annealed (+A) thermal

Property Temperature Value
Coefficient of thermal expansion 20.0 °C Coefficient of thermal expansion of 1.02E-5 1/K
- 100.0 °C Coefficient of thermal expansion of 1.05E-5 1/K
- 200.0 °C Coefficient of thermal expansion of 1.09E-5 - 1.1E-5 1/K
- 300.0 °C Coefficient of thermal expansion of 1.13E-5 - 1.15E-5 1/K
- 400.0 °C Coefficient of thermal expansion of 1.16E-5 - 1.2E-5 1/K
- 500.0 °C Coefficient of thermal expansion of 1.2E-5 1/K
- 600.0 °C Coefficient of thermal expansion of 1.22E-5 1/K
Max service temperature, long - Max service temperature, long of 0 - 200 °C
Specific heat capacity 20.0 °C Specific heat capacity of 439 - 460 J/(kg·K)
- 100.0 °C Specific heat capacity of 474 J/(kg·K)
- 200.0 °C Specific heat capacity of 498 J/(kg·K)
- 300.0 °C Specific heat capacity of 517 J/(kg·K)
- 400.0 °C Specific heat capacity of 538 J/(kg·K)
- 500.0 °C Specific heat capacity of 564 J/(kg·K)
- 600.0 °C Specific heat capacity of 598 J/(kg·K)
Thermal conductivity 20.0 °C Thermal conductivity of 24.6 - 30 W/(m·K)
- 100.0 °C Thermal conductivity of 24.7 W/(m·K)
- 200.0 °C Thermal conductivity of 25 W/(m·K)
- 300.0 °C Thermal conductivity of 25.2 W/(m·K)
- 400.0 °C Thermal conductivity of 25.5 W/(m·K)
- 500.0 °C Thermal conductivity of 25.8 W/(m·K)
- 600.0 °C Thermal conductivity of 26 W/(m·K)
Thermal diffusivity 20.0 °C Thermal diffusivity of 7.3 mm²/s
- 100.0 °C Thermal diffusivity of 6.4 mm²/s
- 200.0 °C Thermal diffusivity of 6.1 mm²/s
- 300.0 °C Thermal diffusivity of 5.8 mm²/s
- 400.0 °C Thermal diffusivity of 5.4 mm²/s
- 500.0 °C Thermal diffusivity of 4.8 mm²/s
- 600.0 °C Thermal diffusivity of 4.1 mm²/s

DIN 17440 Grade X38Cr13 soft annealed (+A) chemical

Property Value
Carbon Carbon of 0.35 - 0.42 %
Chromium Chromium of 12.5 - 14.5 %
Manganese Manganese of 1 %
Phosphorus Phosphorus of 0.05 %
Silicon Silicon of 1 %
Sulfur Sulfur of 0.03 %

DIN 17440 Grade X38Cr13 soft annealed (+A) electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 5.87E-7 - 6.5E-7 Ω·m
- 100.0 °C Electrical resistivity of 6.55E-7 Ω·m
- 200.0 °C Electrical resistivity of 7.38E-7 Ω·m
- 300.0 °C Electrical resistivity of 8.19E-7 Ω·m
- 400.0 °C Electrical resistivity of 8.96E-7 Ω·m
- 500.0 °C Electrical resistivity of 9.7E-7 Ω·m
- 600.0 °C Electrical resistivity of 1.04E-6 Ω·m

DIN 17440 Grade X38Cr13 soft annealed (+A) mechanical

Property Temperature Value Comment
Elastic modulus 20.0 °C Elastic modulus of 220 - 222 GPa -
- 100.0 °C Elastic modulus of 216 - 218 GPa -
- 200.0 °C Elastic modulus of 209 - 212 GPa -
- 300.0 °C Elastic modulus of 201 - 205 GPa -
- 400.0 °C Elastic modulus of 192 - 197 GPa -
- 500.0 °C Elastic modulus of 183 GPa -
- 600.0 °C Elastic modulus of 174 GPa -
Hardness, Brinell 20.0 °C Hardness, Brinell of 250 [-] -
Poisson's ratio 23.0 °C Poisson's ratio of 0.3 [-] Typical for Steel
Tensile strength 20.0 °C Tensile strength of 800 MPa -

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