NiCr8020 | 2.4869 Material Datasheet
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| Material Number | Material Name | Material Number (single) | Standard | Scope | Standard Status | Country | Successor | VDA 231-106 classification | Application temperature [°C] | |
|---|---|---|---|---|---|---|---|---|---|---|
| 2.4869 (DIN 17742 : 2002-09) | NiCr8020 | 2.4869 | DIN 17742 : 2002-09 | DIN 17742 : 2002-09 replaced by DIN 17742 : 2020-12 | Replaced | Germany | NiCr8020 | 3.4 | ≤ 1150 | 1) |
| 1) Remark: The material NiCr8020 with the material number 2.4869 is applied in the form of strips, sheets, tubes and wires (see also heating conductor alloys according to DIN 17470 or electrical resistance alloys according to DIN 17471) for furnace construction components and heating conductors. It is a nickel-chromium heating conductor alloy for operating temperatures of up to 1150 °C and often contains additives of rare earths for a higher resistance to oxidation, especially with frequent switching operations or broad temperature variations. The resistance to atmospheric corrosion at 20 °C is high up to the upper operating temperature the resistance to air and other oxygen-containing gases as well as to nitrogen-containing low-oxygen gases is high as well, yet it is low to oxidizing as well as reducing gases containing sulphur. The resistance to carbonizing is high. Application for industrial electric furnaces, enamelling furnaces, household appliances, night-current storage space-heaters. |
Chemical Composition
| Al [%] | C [%] | Cr [%] | Cu [%] | Fe [%] | Mn [%] | Ni [%] | P [%] | S [%] | Si [%] | |
|---|---|---|---|---|---|---|---|---|---|---|
| blur | blur | blur | blur | blur | blur | blur | blur | blur | blur | 1)2) |
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Material Compliance
| REACh | RoHS |
|---|---|
| blur | blur |
Mechanical Properties
| Semi-finished Product | Condition | Strength Abbrevation | Nominal Size [mm] | Temperature [°C] | Specimen Direction | Tensile Strength [MPa] | Yield Strength (0.2% offset) [MPa] | Yield Strength (1.0% offset) [MPa] | Elongation A100 [%] | Elongation A [%] | Hardness HB | HBW | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| blur | blur | blur | blur | blur | blur | 1)2) | ||||||
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Physical Properties
| Temperature [°C] | Melting Temperature [°C] | Density [g/cm³] | Young's Modulus [GPa] | Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1] | Thermal Conductivity [W/(m*K)] | Specific Electrical Resistance [µΩm] | Mean Specific Heat Capacity [kJ/(kg*K)] | |
|---|---|---|---|---|---|---|---|---|
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Welding and Joining
| Procedure | Welding and Joining - Evaluation | Interpass Temperature [°C] | Added Materials | |
|---|---|---|---|---|
| blur | blur | blur | blur | 1) |
| 1) Source: blur |
Creep Rupture Behaviour
| Condition | Temperature [°C] | 1% Creep Limit at 10³ h [MPa] | |
|---|---|---|---|
| blur | blur | blur | 1) |
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