Introduction
WISDOM Ni70Cr30 is a nickel-chromium alloy (NiCr alloy) for use at temperatures up to 1250°C (2280°F). The alloy is characterized by high resistivity, good oxidation resistance and very good form stability. It has good ductility after use and excellent weldability.
Common Names: Cr30Ni70, Nikrothal 70, Chromel 70/30, N7, Hytemco, HAI-NiCr 70, Balco, Tophet 30, Resistohm 70, Cronix 70, Stablohm 710
Chemical Composition
| C |
P |
S |
Mn |
Si |
Cr |
Ni |
Al |
Fe |
| ≤0.08 |
≤0.02 |
≤0.015 |
≤0.6 |
0.75~1.6 |
28~31 |
Bal. |
≤0.5 |
≤1.0 |
Characterisitic
| Max. continuous service Temp. |
1100ºC |
Approx. melting point |
1390ºC |
| Resistivity at 20ºC |
1.04±0.05 μΩ·m |
Elongation |
≥20% |
| Density |
7.90 g/cm3 |
Accelerated life |
≥80h/1100ºC |
| Thermal conductivity |
45.2 KJ/m·h·ºC |
Micrographic structure |
austenite |
| Coefficient of lines expansion |
19.0 α×10-6/ºC |
Magnetic properties |
Weak magnetic |
| Specific heat |
0.500 J/g·ºC |
Forms Available |
Wire,ribbon,strip, bar,sheet,pipe |
Application
· Widely used for industrial furnaces (upto 1230°C) with alternating oxidizing/reducing atmosphere, precision resistors.
· Electrical appliance industry
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 Western union 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.
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