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TOPHET® A Wire and Strips

Authorized supplier of comprehensive range of TOPHET® A wire and Strips, Look for TOPHET® A Wire and Strips best price your source for TOPHET® (Brand)

Grand Metal Corporation is acknowledged as an authorized exporter & suppliers of TOPHET® A Wire and Strips, available in a variety or grades, materials, and finishes as full line distributor.also caries other brand range of resistance wire.

Nominal Composition

Carbon 15% Max
Manganese 5% Max
Sulfur 0.1% Max
Silicon 0.5-1.5% Max
Chromium 19-21%
Nickel (+Cobalt) 77-79%
Iron 1.0% Max
Tophet "A" is a nickel-chromium resistance alloy for operating temperatures up to 2150° F. It is non-magnetic, highly corrosion resistant and has a lower coefficient of resistance than other heater element alloys. Typical Applications for the material include flat irons, ironing machines, quartz tube heaters, cartridge elements, etc. The lack of reactivity to MgO refractories make it the most suitable alloy for enclosed heater elements especially in higher temperature ranges.

Typical Mechanical Properties

Ultimate Tensile Strength
Hard Temper 200,000 PSI
Stress Relieved 175,000 PSI
Annealed 100,000 PSI
Modulus of Elasticity
(x 10e6 PSI)
Magnetic Response Non-magnetic

Typical Physical Properties

Density .304 lbs/cu in
Melting Point 2552° F Approximately
Specific Gravity 8.41
Electrical Resistivity @ RT 650 ohm/cir mil/ft
Thermal Expansion Coefficient
70-200°F 7.3 x 10-e6
201-1500°F 9.6 x 10-e6
Thermal Conductivity  0.113 W/cm/°C
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Call: +91 98927 02393, 97690 58811
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