NiCr8020 Electrical Resistance Heating White Wire Cr25Al5/Cr25Al5
How is resistance wire made?
Nichrome, a non-magnetic alloy of nickel and chromium, is commonly used to make resistance wire because it has a high resistivity and resistance to oxidation at high temperatures. When used as a heating element, resistance wire is usually wound into coils.
How does a resistance wire work?
Resistance wire is a type of alloy with several uses, with some types being made from a range of alloys. This material receives its name because it works as a heating element and performs as a heating wire. As such, it is able to resist all flow of electricity, as well as the heat produced from electrical energy.
Main Characteristics of Ni-Cr and Ni-Cr-Fe Electric Heating Alloys
| Alloy Nomenclature Performance | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 |
| Main Chemical Composition | Ni | Rest | Rest | 55-61 | 34-37 | 30-34 |
| Cr | 20-23 | 28-31 | 15-18 | 18-21 | 18-21 |
| Fe | ≤1.0 | ≤1.0 | Rest | Rest | Rest |
| Max. continuous service temp. of element | 1200 | 1250 | 1150 | 1100 | 1100 |
| Resistivity at 20ºC (μΩ·m) | 1.09 | 1.18 | 1.12 | 1.00 | 1.04 |
| Density (g/cm 3 ) | 8.40 | 8.10 | 8.20 | 7.90 | 7.90 |
| Thermal conductivity (KJ/m·h·ºC) | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 |
| Coefficient of lines expansion (α×10 -6 /ºC) | 18.0 | 17.0 | 17.0 | 19.0 | 19.0 |
| Melting point (approx.) (ºC) | 1400 | 1380 | 1390 | 1390 | 1390 |
| Elongation at rupture (%) | >20 | >20 | >20 | >20 | >20 |
| Micrographic structure | Austenlte | Austenlte | Austenlte | Austenlte | Austenlte |
| Magnetic properties | Nonmagnetic | Nonmagnetic | Weak Magnetic | Weak Magnetic | Weak Magnetic |
| No. | Spool Model | Outer Diameter
(d1) | Trunk
Diameter(d2) | Inner
Diameter(d3) | Inner Height(L2) | Total height
(L1) | Weight of Spool | Rated load weight |
| 1 | DIN 125 | 125mm | 65mm | 20-25mm | 100mm | 120mm | 0.18kg | 2-3kg |
| 2 | DIN 160 | 160mm | 99.3mm | 22.03mm | 129mm | 160mm | 0.3kg | 5-7kg |
| 3 | DIN 200 | 200mm | 125.31mm | 23.06mm | 160mm | 200mm | 0.62-0.66kg | 10-15kg |
| 4 | DIN 250 | 250mm | 160mm | 20.73mm | 160mm | 200mm | 1kg | 20-25kg |
| 5 | NS-4 | 118.83mm | 75.4mm | 21.27mm | 129.33mm | 148.14mm | | 2-3kg |
1. How can I get a quotation from you?
You can leave us message or send us a email and we will reply every message in time.
Or we may talk on line by skype & wechat.
And you can also find our contact information on contact page.
2. Can I get samples before order?
Yes, of course. Can send you small piece for you to check quality.
3. What is your delivery time?
A. The time of delivery is usually around 7-25 days according to the products you need.
4. What is your payment terms?
Our usual payment term is 30% deposite, and rest against B/L.
L/C is also acceptatble .
5. How can you garantee what I got will be good?
First of all, the material origin in TISCO, JISCO, etc and we can offer MTC from the steel mill.
Also, we accept third-party test.
6. How do you make our business long-term and good relationship?
A. We keep good quality and competitive price to ensure our customers benefit ;
B. We respect every customer as our friend and we sincerely do business and make friends with them no matter where they come from
Looking for resistance wire supplier ? We have a wide selection at good prices to help you get creative. All the resistance wires are quality guaranteed. We are China Origin Factory of resistance wire. If you have any question, please feel free to contact us.
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NiCr8020 Electrical Resistance Heating White Wire 0.05mm Annealed Images
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