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G-CoCr28 | 2.4778 Material Datasheet

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Material Description

Material Number Material Name Material Number (single) Standard Scope Standard Status Country VDA 231-106 classification Application temperature [°C]
2.4778 (DIN EN 10295 : 2003-01) G-CoCr28 2.4778 DIN EN 10295 : 2003-01 Supersedes DIN 17465 : 1993-08 Valid Germany 1.1.2 ≤ 1200 1)
1) Remark: According to DIN EN 10295 : 2003-01, the highest temperature in air is 1200 °C for the material G-CoCr28, material number 2.4778 . For cyclic heatings, the highest temperature in air is 1100 °C. The following is valid for the comparable austenitic DIN-material: The heat-resistant cast material G-CoCr28 is also produced as the wrought material CoCr28 (material number 2.4778 as well). It is applied in the construction of industrial furnaces at up to 1100 °C. Its weldability is good, a preheating is not necessary.

Chemical Composition

C [%] Co [%] Cr [%] Mn [%] Mo [%] Nb [%] Ni [%] P [%] S [%] Si [%] Remainder
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Material Compliance

REACh RoHS
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Mechanical Properties

Semi-finished Product Condition Temperature [°C] Tensile Strength [MPa] Yield Strength (0.2% offset) [MPa] Elongation A [%]
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Physical Properties

Temperature [°C] Density [g/cm³] 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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Creep Rupture Behaviour

Temperature [°C] Creep Tensile Strength at 10² h [MPa] Creep Tensile Strength at 10³ h [MPa] 1% Creep Limit at 10^4 h [MPa]
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Cross Reference

Material Name Country Standard
ZCoCr28Fe18C0,3 China GB/T 8492 1)
C96001 China GB/T 8492 1)
G-CoCr28 Europe EN 10295
Stellite 250 USA 1)
1) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach

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