Invar is a trademark for an iron, Nickel alloy containing 35, 36% nickel and characterized by an extremely minimal ratio of thermal expansion excellent for uses that demand no dimensional changes with temperature variations. Invar is strong, Tough, Ductile and possesses a useful degree of corrosion resistance. We manufacture various kinds of heating element nichrome wires, Resistance wires 90/10, 80/20, 70/30, Monel, 400 wires, Pure nickel wires, Nickel, Iron ferro nickel, Wires invar etc. Cupro nickel wires 90/10, 80/20, 70/30, Constantan wires jx, Vx, Tx, Wx manganin wires/strips.