Alloys 617

Brand name	INCONEL® Alloy 617, Nicrofer® 5520 Co

Trade name	Alloy 617

Standards	Material No. 2.4663 EN Designation NiCr23Co12Mo UNS N06617 Alloy 617

Description	Alloy 617 / 2.4663 is a nickel-chromium-cobalt-molybdenum alloy.

Special properties	Excellent mechanical properties up to 1100°C. Excellent resistance to oxidation up to 1100°C.

Chemical Composition	C % 0.05-0.10 Si ≤ % 0.20 Mn ≤ % 0.20 P ≤ % 0.01 S ≤ % 0.01 Cr % 20.0-23.0 Mo % 8.50-10.0 Ni % Rest Ti ≤ % 0.20-0.60 Cu % ≤ 0.50 Al % 0.70-1.40 Co % 11.0-14.0 B % ≤ 0.006 Fe % ≤ 2.00

Mechanical Properties 20°C	0.2% Yield strength Rp ≥ N/mm² 300 Tensile strength Rm N/mm² ≥ 690 Elongation A5 ≥ % 35 Modulus of elasticity kN/mm² 212

Physical Properties 20°C	Density g/cm³ 8.4 Specific heat capacity J/kg K 420 Thermal conductivity W/m K 13.4 Electrical resistivity Ω mm²/m 1.22

Suitable welding filler materials	2.4627; 2.4628

Application	Components for gas turbines, petrochemical industry

Available forms for 2.4663 / ALLOY 617	Sheets/Plates Bars Wire Tubes/Pipes Fittings Forged / cast parts Finished part (drawing)