Alloys 690

Brand name	INCONEL® Alloy 690, Nicrofer® 6030

Trade name	Alloy 690

Standards	Material No. 2.4642 EN Designation NiCr29Fe UNS N06690 Alloy 690

Description	Alloy 690 / 2.4622 is a nickel-chromium-iron alloy.

Special properties	High corrosion resistance to oxidizing media.

Chemical Composition	C % ≤ 0.05 Si ≤ % 0.50 Mn ≤ % 0.50 P ≤ % 0.02 S ≤ % 0.015 Cr % 27.0-31.0 Ni % Rest Ti ≤ % ≤ 0.50 Cu % ≤ 0.50 Al % ≤ 0.50 Fe % 7.00-11.0

Mechanical Properties 20°C	0.2% Yield strength Rp ≥ N/mm² 240 Tensile strength Rm N/mm² ≥ 586 Elongation A5 ≥ % 30 Modulus of elasticity kN/mm² 215

Physical Properties 20°C	Density g/cm³ 8.2 Specific heat capacity J/kg K 450 Thermal conductivity W/m K 12 Electrical resistivity Ω mm²/m 1.15

Suitable welding filler materials	2.4648

Application	Nuclear fuel processing, steam generators in pressurized water reactors

Available forms for 2.4642 / ALLOY 690	Tubes/Pipes Fittings