DIN 17221 Grade 55Cr3 annealed to achieve spheroidized carbides (+AC)
DIN 17221 Grade 55Cr3 annealed to achieve spheroidized carbides (+AC) introduction
The steel 55 Cr 3 is used for hot formed springs like plate springs, torsion springs, helical springs for autmotive engineering as well as for bigger tension or compression springs for special purposes.
Equivalent material: NBN 55Cr3, GB 55CrMnA, AFNOR 55C3, BS 525A60, GOST 50ChGA, ISO 7, UNI 55Cr3, JIS SUP9, SS 2253, UNE F.1431-55Cr3, ASTM 5155, DIN 1.7176, AFNOR 55Cr3, BS 525A58, BS 55Cr3, AISI 5155, AISI 5155H, AISI 5160, AISI 5160H, SAE 5155, SAE 5155H, SAE 5160, SAE 5160H, JIS SUP9A, JIS SUP9M, EN 55Cr3, EN 54SiCr6, EN 1.7176, GOST 50ChG, GB/T 60CrMnA, GB/T 55CrMnA, GB/T A22553, GB/T A22603, ASTM 5160, ASTM 5155H, ASTM 5160H, ASTM Grade 5160, UNS H51550, UNS G51550, UNS H51600, UNS G51600
DIN 17221 Grade 55Cr3 annealed to achieve spheroidized carbides (+AC) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.83 g/cm³ |
DIN 17221 Grade 55Cr3 annealed to achieve spheroidized carbides (+AC) thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
-100.0 °C |
Coefficient of thermal expansion of 1.05E-5 1/K |
- |
| - |
20.0 °C |
Coefficient of thermal expansion of 1.15E-5 1/K |
- |
| - |
100.0 °C |
Coefficient of thermal expansion of 1.21E-5 1/K |
- |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.27E-5 1/K |
- |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.32E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.36E-5 1/K |
- |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.4E-5 1/K |
- |
| - |
600.0 °C |
Coefficient of thermal expansion of 1.44E-5 1/K |
- |
| Max service temperature, long |
- |
Max service temperature, long of -30 - 100 °C |
- |
| Melting point |
- |
Melting point of 1382 - 1529 °C |
Typical for Chromium 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 45.1 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 45.1 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 44.1 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 41.9 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 39.4 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 36.9 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 34.4 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 12.5 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 11.6 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 10.6 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 9.5 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 8.4 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 7.1 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 5.8 mm²/s |
- |
DIN 17221 Grade 55Cr3 annealed to achieve spheroidized carbides (+AC) chemical
| Property |
Value |
| Carbon |
Carbon of 0.52 - 0.59 % |
| Chromium |
Chromium of 0.7 - 1 % |
| Manganese |
Manganese of 0.7 - 1.1 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.25 - 0.5 % |
| Sulfur |
Sulfur of 0.03 % |
DIN 17221 Grade 55Cr3 annealed to achieve spheroidized carbides (+AC) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 2.31E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 2.84E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 3.58E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 4.48E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 5.52E-7 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 6.71E-7 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 8.06E-7 Ω·m |
DIN 17221 Grade 55Cr3 annealed to achieve spheroidized carbides (+AC) mechanical
| Property |
Temperature |
Value |
| 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 |
20.0 °C |
Poisson's ratio of 0.28 [-] |
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