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Nimonic® C-263
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Nimonic® C-263

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CHEMICAL COMPOSITION SPECIFICATIONS DESIGNATIONS KEY FEATURES TYPICAL APPLICATIONS
Element Min % Max %
C 0.04 0.08
Si 0.40
Mn 0.60
S 0.007
Ag 0.0005
AI 0.30 0.60
B 0.005
Bi 0.0001
Co 19.0 21.0
Cr 19.0 21.0
Cu 0.20
Fe 0.70
Mo 5.60 6.10
Pb 0.002
Ti 1.90 2.40
Ti+AI 2.40 2.80
Ni Bal
W.Nr. 2.4650
UNS N07263
AMS 5872
AMS 5886
BS HR 10
BS HR 206
Excellent fabrication characteristics
in the annealed condition
Age Hardenable
High temperature static applications**
Parts in gas turbines
Sealing rings
Density 8.36 g/cm3 0.302 lb/in³
Melting Point 1325 °C 2415 °F
Coefficient of Expansion 10.6 μm/m• °C (20 – 100 °C) 5.7 x 10-6 in/in• °F (70 – 212 °F)
Modulus of Elasticity 222.5 kN/mm² 32270 ksi
HEAT TREATMENT OF FINISHED PARTS
Condition as supplied by Alloy Wire Type Temperature Time (Hr) Cooling
°C °F
Annealed Age Harden 800 1475 8 hours Air
Spring Temper Anneal
Age Harden
1040 – 1165
800
1900 – 2125
1475
Suited to diameter
8 Hours
Water or Air
Air
PROPERTIES
Condition Approx. tensile strength Approx. operating temperature
N/mm² ksi °C °F
Annealed 800 – 1000 116 – 145 up to 800 up to 1500
Annealed + Aged 1000 – 1200 145 – 174 up to 800 up to 1500
Spring Temper 1200 – 1500 174 – 217 up to 800 up to 1500
Spring Temper + Annealed + Aged 1000 – 1200 145 – 174 up to 800 up to 1500

The above tensile strength ranges are typical. If you require different please ask.

**Static application = Still/Fixed/Motionless/Rigid

®Trade name of Special Metals Group of Companies.

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