Resistance Alloys
( Electrical Resistance Alloys/Electrical Heating Alloys)

Overview

A resistive material is a material whose composition is adjusted so that it is difficult to conduct electricity (high electrical resistance) in metals.
They are mainly classified into two types: "materials for electric resistance" used for resistors, etc. and "materials for electric heating" used for heating elements, etc.

"Materials for electric resistance" limit the flow of current through metal resistance, and "materials for electric heating" are used to generate heat due to metal resistance when an electric current is applied.

We manufacture various types of resistor materials in small lots with high quality.

Examples of Applications

Various Resistors, Heaters, Heating Elements, etc.

Available Shapes

It depends on material grade, so please confirm details on each material grade page.

Electrical Resistance Alloy

Lineup and Features

Please scroll horizontally to view.

*1　Evanohm R is a registered trademark of Carpenter Technology Corporation.

*2　MANGANIN and ZERANIN are registered trademarks of Isabellenhutte.

Standards

Each standard is for reference only.

Please scroll horizontally to view.

Chemical Compositions

Please scroll horizontally to view.

[mass%]

Specifications：Adjustment of Conductor Resistance

We can adjust conductor resistance upon your request.
Even with the same material, conductor resistance varies depending on the product dimensions (thickness / width) and the degree of softening (tempering) of the product. By controlling these factors, we can achieve high-precision conductor resistance values.


■Difference between volume resistivityand conductor resistance.

• Volume resistivity is a material-specific physical property and its unit is μΩ-m.It is affected by variations in composition of melting lot.
• Conductor resistance is the resistance per meter length of reroll product, and its unit is Ω/m.

　

【Relationship between Volume Resisivity (ρ) and Conductor Resistance(R)】

　
ρ  ： Volume Resistivity（μΩ・m）
t   ：Thickness（mm）
w ：Width（mm）

Advantages of TOKKIN

1. Fine adjustment of conductor resistance is possible.
   Even with the same material, there will be variations in volume resistivity depending on the melting lot and preparation.
   We guarantee highly accurate conductor resistance values by adjusting plate thickness while measuring resistance values during the process.
2. Resistance temperature coefficient (TCR) is guaranteed.
   Depending on the material, we can guarantee Temperature Coefficient of Resistance (TCR) upon your request.
   [For example]　Zeranin30：　20-60℃　±10ppm
3. Highly accurate thickness tolerances are guaranteed.
   In resistive materials, variations in thickness affect resistance. We guarantee highly accurate thickness tolerances with our long-cultivated technology.
4. Small lot production is available.
   For resistor materials, we can manufacture small lot of 50 kg or more.
   *We can also flexibly accommodate orders of less than 50 kg for prototypes, etc. Please feel free to contact us.
5.  Ultra-thin foil can also be manufactured.
   We manufacture from a minimum thickness of 0.030mm (30μm), and meet the market needs for smaller and thinner products.
6. Hardness can be adjusted upon your request.
   By combination of cold rolling and heat treatment, we can adjust material's hardness to your requested one.

Electrical Heating Alloy

Lineup and Features

Please scroll horizontally to view.

Standards

Each standard is for reference only.

Please scroll horizontally to view.

Chemical Compositions

Please scroll horizontally to view.

[mass%]

Specifications：Design of Heating Element

Heat Quantity depends on the product dimensions (thickness / width), volume resistivity(ρ), and coefficient of increase in resistance.
Please let us know your requirements so that we can propose the grade and dimensions that best suit your needs.



【Relationship between heat quantity (Q), volume resistivity (ρ), and coefficient of increase in resistance】

　
R  ：Electric Resistance（Ω）
ρ  ：Volume Resistivity（μΩ・m）
k  ：Coefficient of Increase in Resistance
I   ：Electric Current（A）
T  ：Time（sec.）
t   ：Thickness（mm）
w ：Width（mm）

Advantages of TOKKIN

1.  Highly accurate thickness tolerances are guaranteed.
   In resistive materials, variations in thickness affect resistance. We guarantee highly accurate thickness tolerances with our long-cultivated technology.
2. Small lot production is available.
   For resistor materials, we can manufacture small lot of 50 kg or more.
   *We can also flexibly accommodate orders of less than 50 kg for prototypes, etc. Please feel free to contact us.
3. Ultra-thin foil can also be manufactured.
   We manufacture from a minimum thickness of 0.030mm (30μm), and meet the market needs for smaller and thinner products.
4. Hardness can be adjusted upon your request.
   By combination of cold rolling and heat treatment, we can adjust material's hardness to your requested one.

Download Technical Data

Electrical Resistance alloy / Electrical Heating Alloys 

Download ＞

 

Related Pages