Tophet a (Nichrome) Heating Strip High-Performance Furnace-Grade Resistance

Product Specification

Tophet a (Nichrome) Heating Strip High-Performance Furnace-Grade Resistance Alloy
 

Our Nichrome Tophet A heating strip is a high-performance nickel-chromium alloy material specifically engineered for demanding industrial furnace applications. Manufactured from Tophet A (Ni80Cr20) alloy, this strip offers an exceptional balance of high electrical resistance, superior oxidation resistance, and excellent high-temperature strength. It is the ideal choice for fabricating durable, reliable, and efficient heating elements in a wide range of thermal processing equipment.

Produced under strict quality controls to ensure precise dimensional accuracy and consistent metallurgical properties, this heating strip enables the construction of ribbon-type elements that deliver stable power output and extended service life under continuous high-temperature operation.

Key Features & Benefits:

• Superior High-Temperature Performance: The Ni80Cr20 composition provides outstanding oxidation resistance and stable electrical properties at continuous operating temperatures up to approximately 1150°C (2100°F), making it suitable for most industrial furnace atmospheres.
• Excellent Mechanical Strength: Maintains good structural integrity and resists sagging, distortion, and embrittlement even after prolonged exposure to thermal cycling, ensuring long-term element geometry and performance.
• Optimized Resistivity: Delivers a high and consistent electrical resistivity, allowing for efficient heat generation and enabling the design of compact, high-power density heating elements.
• Good Formability & Weldability: The strip can be readily formed, bent, and welded (using compatible NiCr filler wires) to create complex element shapes such as ribbons, grids, or serpentine coils to meet specific furnace layout requirements.
• Proven Reliability: As a long-established and widely specified alloy, Tophet A offers predictable performance and longevity, reducing maintenance downtime and operational costs.

Technical Specifications:

• Material: Nichrome Tophet A (Equivalent to Ni80Cr20, UNS N06003).
• Common Standards: ASTM B344, IEC 60172, among other international specifications.
• Typical Composition: Nickel (Ni) ~80%, Chromium (Cr) ~20%, Iron (Fe) and other trace elements.
• Available Forms: Flat strip (rectangular cross-section).
• Standard Thickness & Width: Available in a range of dimensions (e.g., Thickness: 1.0mm - 3.0mm; Width: 10mm - 100mm). Custom sizes can be supplied upon request.
• Condition: Typically supplied annealed and pickled (cleaned) for optimal formability and surface condition.
• Surface Finish: Clean, descaled surface suitable for immediate fabrication and oxidation during initial heat-up.

Primary Applications:

• Industrial Furnaces: Core material for ribbon heating elements in electric resistance furnaces used for heat treatment (annealing, hardening, tempering), sintering, brazing, and ceramics firing.
• Kilns & Ovens: Construction of heating elements in high-temperature industrial kilns for pottery, enamel firing, and glass processing.
• Thermal Processing Equipment: Used in components for aluminum melting furnaces, die-casting machine heaters, and other metal processing equipment.
• Laboratory & Testing Furnaces: Fabrication of elements in high-temperature lab furnaces and environmental test chambers requiring precise and reliable heating.

FAQ

1. What's the minimum quantity customer can order?

If we have your size in stock, we can provide any quantity you want.

If we do not have, for spool wire, we can produce 1 spool, about 2-3kg. For coil wire, 25kg.

2. How can you pay for small sample amount?

We have account, wire transfer for sample amount also ok.

3. Customer do not have express account. How will us arrange the delivery for sample order?

Just need to provide your address information, we will check the express cost, you can arrange the express cost together with sample value.

4. What's our payment terms?

We can accept LC T/T payment terms, it also depending on delivery and total amount. Let's talk more in details after getting your detailed requirements.

5. Do you provide free samples?

If you want several meters and we have stock of your size, we can provide, customer need to bear the International express cost.

6. What's our working time?

We will give you reply through email/phone Online contact tool within 24 hours. No matter working day or holidays