His birth of this unique nickel-chromium alloy is obliged Albert Marsh. Thanks to its development in 1905 at the dawn of the technological revolution, the world has been blinded by glitter Nichrome. Advantages of this alloy not only meet the requirements of the most daring of the twentieth century engineers, but also to anticipate them. Even ten years later, this material is the most widely used in the production of household appliances. It drew the attention of the corporation General Electric. Made her electric toasters had the heating elements of Nichrome, which qualitatively surpassed the previously used iron spiral. Unlike iron, the new alloy does not rust, does not melt, no spark, he was more plastic and can withstand higher heat temperature.
Nichrome is based on chromium and nickel. Its composition is doped with aluminum, silicon, titanium, manganese and other elements, but their content is less than 1%. The optimum ratio of the components determines the unique technical properties. A significant proportion of the nickel alloy gives the ability to dissolve other metals without loss of ductility and corrosion resistance in hot liquid and gaseous media. Chromium enhances heat resistance, hardness and corrosion resistance
|GOST||AISI / Grade||DIN / Werkstoff||UNS||Name|
|Cr20Ni80||NiCr 80 20||2.4869||N06003||Ni80Cr20|
|H15N60||NiCr 60 15||2.4867||N06004||Ni60Cr15|
|HN70YU||NiCr 70 30||2.4658||N06008||Ni70Cr30|
Chemical composition (in%)
|Cr20Ni80||less than 0.06||less than 0.6||10 — 15||20−23||the basis||up to 1.0|
|H15N60||less than 0.06||less than 0.6||10 — 15||15−18||55−61||the balance|
Physical properties of nichrome
|Alloy||Tensile Strength N / mm2||Elongation at break (%)||Density g / cm3||The electrical resistivity (Omxmm2 / m)||The maximum continuous operation temperature (° C)||t ° Melting (° C)||Thermal conductivity (W / (m • K))||The coefficient of linear expansion (10−6 / ° C)||Service life, hours|
|Cr20Ni80||686 ~ 736||>20||8.40||1.09 ± 0.05||1200||1400||60.3||18.0||> 4000|
|H15N60||637−784||>20||8.20||1.12 ± 0.05||1150||1390||45.2||17.0||> 4000|
Nichrome has a good combination of heat resistance and high electrical resistance. The minimum coefficient of thermal expansion enables the wire does not sag at significant temperatures. Surface oxides of chromium and nickel alloy impart excellent corrosion resistance, it can be used in harsh environments. It has good processability. Plasticity allows you to roll the thinnest wire and tape in a cold state. Heat resistance helps to maintain the fragments of nickel alloys mechanical loads without deforming or breaking. Alloy Plastic, easily stamped, drilled, welded, so that it is made from a very wide range of products. This alloy is quite expensive, but its price is fully compensated by the reliability, durability.
- Cr20Ni80 — NiCr80 / 20 20% Chrome, 80% Nickel ,. 650 ohms / cmf, t ° melting 1200 ° C. Analogs N8, Resistohm 80, Cronix 80, Chromel A, HAI-NiCr 80, Nikrothal 8, Nichrome V, Ni80Cr20, evronihrom
- H15N60 — NiCr 60/15 Nickel 60%, 16% chromium, 24% of Iron 675 ohms / cmf, t ° melting 1390 ° C. Analogues: Alloy C, Cronifer II, Chromel C, N6, Nikrothal 60, Nikrothal 6, Ni60Cr15
- Not oxidized during continuous operation;
- It is highly durable;
- heating elements withstand a large number of on / off until fracture;
- It has a minimal coefficient of thermal expansion.
The company «Electrovek-steel» delivers nickel alloys in a wide range, which you can order through our website. Nichrome supply roll of tape, wire — coils or bays. The cost of the wire is in inverse proportion to its diameter. The most popular brands of Nichrome — Cr20Ni80 and H15N60. Before purchasing you should determine the scope of the semis. Help will have the following classification:
· H — heating elements
· C — resistance elements
· TEN — tubular electric heaters
All products are certified. The technical documentation includes data on the chemical composition, limiting the percentage of impurities; mechanical properties of products. We can buy in bulk a variety of semi-finished products for large-scale productions. We also offer good conditions for retail customers. You will be satisfied with the level of service and speed of service.
buy at competitive prices
The company «Electrovek-steel» provides for the implementation of an unlimited range of rolled metal products of the highest quality at a competitive price. If you are not sure, offers experienced managers who are always connected and ready to provide advice. Having made an order with us, you will receive certified products that comply with Russian and international standards of quality in the shortest possible time. If you value your time, contact today with our nearest office in Russia or in Ukraine, or make a reservation on the Internet.