ACI/CAST
GRADE
CAST ASTM CAST EN/DIN CAST UNS WROUGHT
UNS
WROUGHT
GRADE
UMCO50 2.4778 GCoCr28
CHEMICAL COMPOSITION (wt%, TYPICAL VALUES)
C Cr Ni Si Other
0.09 28.0 1.0 49.5Co
CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Rp0.2[MPa] Rm [MPa] A % Hardness [HB] Impact [J]
500 6
CREEP LIMIT
Creep limit 1% 10.000 hours MPa at °C Creep strength for 100.000 hours MPa at °C
600 700 800 900 1000 1100 600 700 800 900 1000 1100
60 35 21 8 3.5 55 28 19 4
PHYSICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Microstructure ρ [kg/dm3] α [μm/m∙K] (20 – 100 °C) K [W/m∙K] Cp [J/kg∙K] Melting ΔT [°C]
Austenitic, Carbides 8.05
WORKING CONDITIONS / FABRICATION
Heat Treatment Max working T in air [°C] Machinability [100 = CF8M] Patternmaker’s Shrinkage [%]
As Cast 1150 2.5
Categoria: Nickel and Cobalt Base
ACI/CAST
GRADE
UMCO50
CAST ASTM
CAST EN/DIN 2.4778 GCoCr28
CAST UNS
WROUGHT
UNS
WROUGHT
GRADE
CHEMICAL COMPOSITION (wt%, TYPICAL VALUES)
C 0.09
Cr 28.0
Ni
Si 1.0
Other 49.5Co
CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Rp0.2[MPa]
Rm [MPa] 500
A % 6
Hardness [HB]
Impact [J]
CREEP LIMIT
Creep limit 1% 10.000 hours MPa at °C
600
700 60
800 35
900 21
1000 8
1100 3.5
Creep strength for 100.000 hours MPa at °C
600
700 55
800 28
900 19
1000 4
1100
PHYSICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Microstructure Austenitic, Carbides
ρ [kg/dm3] 8.05
α [μm/m∙K] (20 – 100 °C)
K [W/m∙K]
Cp [J/kg∙K]
Melting ΔT [°C]
WORKING CONDITIONS / FABRICATION
Heat Treatment As Cast
Max working T in air [°C] 1150
Machining
Patternmaker’s Shrinkage [%] 2.5

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