EN 10263-4 Grade 35B2 annealed to achieve spheroidized carbides (+AC)
EN 10263-4 Grade 35B2 annealed to achieve spheroidized carbides (+AC) introduction
The cold-upsettable steel 35 B 2 can be cold-formed with a medium to high rate of forming according to the usual forming methods on single-stage and multi-stage presses. The steel 35 B 2 is one of the most frequently used steels for pressed parts, screws and tyre bolts of strength class 8.8 in the thin to medium dimension range. For 10.9 parts, the steel is usable up to an M8 dimension according to DIN 267..
Equivalent material: ISO E5, UNE F.1295-35B3DF, DIN 1.5511, AFNOR 38B3, JIS SWRCHB234, JIS SWRCHB237, JIS SWCHB237, EN 35B2, EN 1.5511
EN 10263-4 Grade 35B2 annealed to achieve spheroidized carbides (+AC) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.82 g/cm³ |
EN 10263-4 Grade 35B2 annealed to achieve spheroidized carbides (+AC) thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
-100.0 °C |
Coefficient of thermal expansion of 1.08E-5 1/K |
- |
| - |
20.0 °C |
Coefficient of thermal expansion of 1.19E-5 1/K |
- |
| - |
100.0 °C |
Coefficient of thermal expansion of 1.25E-5 1/K |
- |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.3E-5 1/K |
- |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.36E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.41E-5 1/K |
- |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.45E-5 1/K |
- |
| - |
600.0 °C |
Coefficient of thermal expansion of 1.49E-5 1/K |
- |
| Max service temperature |
- |
Max service temperature of 500 °C |
Typical for Carbon Steel |
| Melting point |
- |
Melting point of 1380 - 1514 °C |
Typical for Medium Carbon Steel |
| Specific heat capacity |
-100.0 °C |
Specific heat capacity of 423 J/(kg·K) |
- |
| - |
20.0 °C |
Specific heat capacity of 461 J/(kg·K) |
- |
| - |
100.0 °C |
Specific heat capacity of 479 J/(kg·K) |
- |
| - |
200.0 °C |
Specific heat capacity of 499 J/(kg·K) |
- |
| - |
300.0 °C |
Specific heat capacity of 517 J/(kg·K) |
- |
| - |
400.0 °C |
Specific heat capacity of 536 J/(kg·K) |
- |
| - |
500.0 °C |
Specific heat capacity of 558 J/(kg·K) |
- |
| - |
600.0 °C |
Specific heat capacity of 587 J/(kg·K) |
- |
| Thermal conductivity |
20.0 °C |
Thermal conductivity of 48 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 48.9 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 47.5 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 44.7 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 41.6 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 38.6 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 35.5 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 13.3 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 12.6 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 11.5 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 10.2 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 8.9 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 7.5 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 6 mm²/s |
- |
EN 10263-4 Grade 35B2 annealed to achieve spheroidized carbides (+AC) chemical
| Property |
Value |
| Boron |
Boron of 1E-3 - 5E-3 % |
| Carbon |
Carbon of 0.32 - 0.4 % |
| Manganese |
Manganese of 0.5 - 0.8 % |
| Phosphorus |
Phosphorus of 0.04 % |
| Silicon |
Silicon of 0.4 % |
| Sulfur |
Sulfur of 0.035 % |
EN 10263-4 Grade 35B2 annealed to achieve spheroidized carbides (+AC) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 2.17E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 2.62E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 3.32E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 4.2E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 5.23E-7 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 6.41E-7 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 7.8E-7 Ω·m |
EN 10263-4 Grade 35B2 annealed to achieve spheroidized carbides (+AC) mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
-100.0 °C |
Elastic modulus of 217 GPa |
- |
| - |
20.0 °C |
Elastic modulus of 212 GPa |
- |
| - |
100.0 °C |
Elastic modulus of 207 GPa |
- |
| - |
200.0 °C |
Elastic modulus of 199 GPa |
- |
| - |
300.0 °C |
Elastic modulus of 192 GPa |
- |
| - |
400.0 °C |
Elastic modulus of 184 GPa |
- |
| - |
500.0 °C |
Elastic modulus of 175 GPa |
- |
| - |
600.0 °C |
Elastic modulus of 164 GPa |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Medium Carbon Steel |
| Reduction of area |
20.0 °C |
Reduction of area of 62 % |
- |
| Shear modulus |
23.0 °C |
Shear modulus of 75 - 80 GPa |
Typical for Carbon Steel |
| Tensile strength |
20.0 °C |
Tensile strength of 570 MPa |
- |
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