Alloys C-263

Brand name	Nicrofer® 5120 CoTi, NIMONIC® C-263

Trade name	Alloy C-263

Standards	Material No. 2.4650 EN Designation NiCo20Cr20MoT UNS N07263 Alloy C-263

Description	Alloy C-263 / 2.4650 is a nickel-chromium-cobalt-molybdenum alloy.

Special properties	Outstanding creep strength up to 850°C. Excellent resistance to oxidation up to 1000°C.

Chemical Composition	C % 0.04-0.08 Si ≤ % 0.40 Mn ≤ % 0.60 P ≤ % 0.02 S ≤ % 0.007 Cr % 19.0-21.0 Mo % 5.60-6.10 Ni % Rest Ti ≤ % 1.90-2.40 Cu % ≤ 0.20 Al % 0.30-0.60 Co % 19.0-21.0 B % ≤ 0.005

Mechanical Properties 20°C	0.2% Yield strength Rp ≥ N/mm² 570 Tensile strength Rm N/mm² ≥ 970 Elongation A5 ≥ % 30 Modulus of elasticity kN/mm² 222

Physical Properties 20°C	Density g/cm³ 8.4 Specific heat capacity J/kg K 426 Thermal conductivity W/m K 11.7 Electrical resistivity Ω mm²/m 1.15

Suitable welding filler materials	2.4650

Application	Parts for gas turbines

Available forms for 2.4650 / ALLOY C-263	Sheets/Plates Bars Wire Tubes/Pipes Fittings Forged / cast parts Finished part (drawing)