NC 80/20: is a 80/20 Nickel-Chrome Alloys containing long life additions which make it eminently suitable for applications, subject to, frequent switching and wide temperature fluctuations. It may be used at operating temperatures up to 1150 C. A relatively low temperature coefficient of resistance with a high resistivity makes it suitable for control resistors.

NC 60/16: is a 60/16 Nickel-Chrome Alloy balance mainly iron but containing long life additions. It is suitable for use up to 1100 C, but has a higher temperature coefficient of resistance, which makes it suitable for less exacting applications than the 80/20 Nickel-Chrome alloys.

NC 37/18: is a 37/18 Nickel-Chrome Alloy balance mainly iron. It is suitable for continuous operation up to a maximum temperature of 1050 C and is recommended for furnace use with atmospheres, which might otherwise cause dry corrosion for higher nickel content materials. In particular,it has better resistance against sulphur attack and 'green rot',a type of corrosion produced by alternating carburisation and oxidation. A large temperature coefficient of resistance means that the change of resistance with the increase in temperature must be taken into account during design. However, this increase provides a degree of safety by reducing the electrical loading, as operating temperature is approached.

Alloy 600: a standard engineering material with good resistance at high temperatures. It is used for furnace and heat treatment equipment,heating element sheathing and it can also be used at low temperatures in chemical and process plant.

COPPER NICKEL ALLOYS
HECNUM: is a Copper-Nickel alloy containing :45% nickel, 1% manganese and balance-copper. Its medium resistivity of 49 microhms per cm combined with its low temperature coefficient of resistance makes it ideal for control resistors. It is suitable for low temperature heating elements up to a maximum of 400 C. A reproducible e.m.f. against copper makes it suitable for use in thermocouples and thermocouple extension or compensating leads. Hecnum can be supplied with an oxidised or enamelled insulation.

CuNi 10 Fe
a Copper Nickel Alloy with the additional iron content giving more corrosion resistance than CuNi 10, typical applications include seawater pipes, condensers and desalination plants.

Alloy K 500: an age-hardening alloy combining the corrosion resistance typical of alloy 400 with increased strength and hardness. It keeps its strength up to about 650C and is strong and ductile at temperatures as low as -250 C. This alloy has a low magnetic permeability and is non-magnetic down to -130 C.

Nickel 200: Commercially pure wrought nickel with good mechanical properties and resistance to a range of corrosive environments. It is used for chemical and processing plant, particularly for maintaining product purity in the handling of foods, synthetic fibres and caustic alkalis. Material is available in wire, strip and ribbon.

Nickel 212: A nickel grade with 2% manganese used for electrode support wire in radio valves, tungsten filament lamps, cathode ray and television display tubes.

GLASS SEALING ALLOYS NICKEL IRON

Alloy 42: Its quite low and constant expansion factor up to 300 C allows its use in high temperature thermostats, for example:gas and electric stoves.

Alloy 48:This alloy is with a nominal composition of 48% nickel, balance - iron having a coefficient of expansion approximately equal to that of soft glasses of the soda-lime and lead-oxide types. For this reason,their application covers a very wide field in the manufacture of electric lamps,radio valves and electronic equipment.

Alloy 52: Particularly suitable for soft glasses, has its most important application in reed switches and in electronic components (transistors).Because of its low dispersion it can be used for high frequency relays.

NiFeCo 29/18: This 29% nickel-iron alloy, modified by the addition of 17% cobalt,has a very low coefficient of expansion matching very closely the medium-hard, boro-silicate glasses. It is widely used in the manufacture of high power radio transmission valves, X-ray tubes and many types of electronic equipment. In addition,it is suitable for use with ceramic materials, e.g. in transformer seals where ceramics are employed.

IRON CHROME ALUMINIUM WIRES AND TAPES

ICA 135 Alloy: is a ferromagnetic alloy which can be used as electrical heating element, up to 1300 C. The disadvantages of iron chrome aluminium alloy, in comparison with nickel chromium alloys, has been reduced to a minimum by the accuracy of preparation and the addition of special additives. ICA 135 should operate in dry surroundings in order to avoid corrosion.

ICA 145 Alloy: With this alloy, it is possible to reach operating temperatures of up to 1350 C. Particularly useful for heating elements of industrial furnaces.