SEW 470 Grade X10CrAlSi25 soft annealed (+A)
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SEW 470 Grade X10CrAlSi25 soft annealed (+A)

SEW 470 Grade X10CrAlSi25 soft annealed (+A) introduction

The material X10CrAlSi25, mat. No 1.4762 is a heat-resistant steel of max. scaling resistance at 1150 °C (highest application temp. in air). The steel is highly resistant to oxidizing, sulfureous athmosphere. Low resistance in nitrogenous, oxygen deficient gases. The temp. limit in permanent operation accounts for 1000 °C: The steel has 3 embrittlement spans: 475 °C, 600 to 850 °C and above 900 °C. Application for oven components, gadgetries, annealing boxes for components of low mechanical load.

Equivalent material: ISO X10CrAlSi25, GOST X10CrAlSi25, ASTM A176Type446, AISI 446, UNS S44600, DIN 1.4762, DIN X10CrAl24, AFNOR Z10CAS24, UNI X16Cr26, SS 2322, SAE 446, JIS SUH446, EN 1.4762, ASTM S44600, ASTM MT446-1, ASTM MT446-2

SEW 470 Grade X10CrAlSi25 soft annealed (+A) general

Property Temperature Value
Density 20.0 °C Density of 7.47 - 7.7 g/cm³

SEW 470 Grade X10CrAlSi25 soft annealed (+A) thermal

Property Temperature Value Comment
Coefficient of thermal expansion 20.0 °C Coefficient of thermal expansion of 9.9E-6 1/K -
- 100.0 °C Coefficient of thermal expansion of 1.03E-5 1/K -
- 200.0 °C Coefficient of thermal expansion of 1.05E-5 - 1.07E-5 1/K -
- 300.0 °C Coefficient of thermal expansion of 1.11E-5 1/K -
- 400.0 °C Coefficient of thermal expansion of 1.15E-5 1/K -
- 500.0 °C Coefficient of thermal expansion of 1.18E-5 - 1.2E-5 1/K -
- 600.0 °C Coefficient of thermal expansion of 1.2E-5 1/K -
- 700.0 °C Coefficient of thermal expansion of 1.24E-5 1/K -
- 800.0 °C Coefficient of thermal expansion of 1.2E-5 - 1.29E-5 1/K -
- 900.0 °C Coefficient of thermal expansion of 1.34E-5 1/K -
- 1000.0 °C Coefficient of thermal expansion of 1.35E-5 - 1.4E-5 1/K -
Max service temperature, long - Max service temperature, long of 0 - 1000 °C -
Melting point - Melting point of 1425 - 1530 °C Typical for Ferritic Stainless Steel
Specific heat capacity 20.0 °C Specific heat capacity of 457 - 500 J/(kg·K) -
- 100.0 °C Specific heat capacity of 498 J/(kg·K) -
- 200.0 °C Specific heat capacity of 534 J/(kg·K) -
- 300.0 °C Specific heat capacity of 555 J/(kg·K) -
- 400.0 °C Specific heat capacity of 577 J/(kg·K) -
- 500.0 °C Specific heat capacity of 605 J/(kg·K) -
- 600.0 °C Specific heat capacity of 648 J/(kg·K) -
- 700.0 °C Specific heat capacity of 656 J/(kg·K) -
- 800.0 °C Specific heat capacity of 657 J/(kg·K) -
- 900.0 °C Specific heat capacity of 657 J/(kg·K) -
- 1000.0 °C Specific heat capacity of 658 J/(kg·K) -
Thermal conductivity 20.0 °C Thermal conductivity of 14.2 - 17 W/(m·K) -
- 100.0 °C Thermal conductivity of 15.5 W/(m·K) -
- 200.0 °C Thermal conductivity of 17 W/(m·K) -
- 300.0 °C Thermal conductivity of 18.3 W/(m·K) -
- 400.0 °C Thermal conductivity of 19.7 W/(m·K) -
- 500.0 °C Thermal conductivity of 20.9 - 23 W/(m·K) -
- 600.0 °C Thermal conductivity of 21.9 W/(m·K) -
- 700.0 °C Thermal conductivity of 23.2 W/(m·K) -
- 800.0 °C Thermal conductivity of 24.6 W/(m·K) -
- 900.0 °C Thermal conductivity of 26.1 W/(m·K) -
- 1000.0 °C Thermal conductivity of 27.5 W/(m·K) -
Thermal diffusivity 20.0 °C Thermal diffusivity of 4.2 mm²/s -
- 100.0 °C Thermal diffusivity of 3.9 mm²/s -
- 200.0 °C Thermal diffusivity of 3.9 mm²/s -
- 300.0 °C Thermal diffusivity of 4 mm²/s -
- 400.0 °C Thermal diffusivity of 4.1 mm²/s -
- 500.0 °C Thermal diffusivity of 3.2 mm²/s -
- 600.0 °C Thermal diffusivity of 3.9 mm²/s -
- 700.0 °C Thermal diffusivity of 4.8 mm²/s -
- 800.0 °C Thermal diffusivity of 5.1 mm²/s -
- 900.0 °C Thermal diffusivity of 5.5 mm²/s -
- 1000.0 °C Thermal diffusivity of 5.7 mm²/s -

SEW 470 Grade X10CrAlSi25 soft annealed (+A) chemical

Property Value
Aluminium Aluminium of 1.2 - 1.7 %
Carbon Carbon of 0.12 %
Chromium Chromium of 23 - 26 %
Manganese Manganese of 1 %
Phosphorus Phosphorus of 0.04 %
Silicon Silicon of 0.7 - 1.4 %
Sulfur Sulfur of 0.015 %

SEW 470 Grade X10CrAlSi25 soft annealed (+A) electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 1.02E-6 - 1.1E-6 Ω·m
- 100.0 °C Electrical resistivity of 1.05E-6 Ω·m
- 200.0 °C Electrical resistivity of 1.09E-6 Ω·m
- 300.0 °C Electrical resistivity of 1.12E-6 Ω·m
- 400.0 °C Electrical resistivity of 1.16E-6 Ω·m
- 500.0 °C Electrical resistivity of 1.2E-6 Ω·m
- 600.0 °C Electrical resistivity of 1.24E-6 Ω·m
- 700.0 °C Electrical resistivity of 1.27E-6 Ω·m
- 800.0 °C Electrical resistivity of 1.28E-6 Ω·m
- 900.0 °C Electrical resistivity of 1.3E-6 Ω·m
- 1000.0 °C Electrical resistivity of 1.31E-6 Ω·m

SEW 470 Grade X10CrAlSi25 soft annealed (+A) mechanical

Property Temperature Value Comment
Elastic modulus 20.0 °C Elastic modulus of 218 GPa -
- 100.0 °C Elastic modulus of 213 GPa -
- 200.0 °C Elastic modulus of 206 GPa -
- 300.0 °C Elastic modulus of 198 GPa -
- 400.0 °C Elastic modulus of 190 GPa -
- 500.0 °C Elastic modulus of 180 GPa -
- 600.0 °C Elastic modulus of 167 GPa -
- 700.0 °C Elastic modulus of 150 GPa -
Elongation 20.0 °C Elongation of 10 - 15 % -
Elongation A80 20.0 °C Elongation A80 of 13 % -
Hardness, Brinell 20.0 °C Hardness, Brinell of 223 [-] -
Poisson's ratio 23.0 °C Poisson's ratio of 0.3 [-] Typical for Ferritic Stainless Steel
Shear modulus 23.0 °C Shear modulus of 77 GPa Typical for Ferritic Stainless Steel
Tensile strength 20.0 °C Tensile strength of 520 - 720 MPa -
Yield strength Rp0.2 20.0 °C Yield strength Rp0.2 of 280 MPa -

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