*Similar Grade
GB | JIS | Trademark | UNS | SW | DIN | W.Nr | ГОСТ |
Cr30Ni70 | - | Nichrome 70 Resistohm 70 Chromel 70/30 | N06008 | Nikrothal 70 | NiCr 70 30 | 2.4658 | X30H70 ХН70Ю-Н |
*Specification
GB/T1234-2012, DIN 17470/17471-1984, ГОСТ 12766.1/2-1990
*Product Forms
Wire, Mesh, Conveyor, Rod, Bar, Strip, Tape, Plate, Sheet and etc.
*Brief
Cr30Ni70 contains 30% Cr and 70% Ni, it has great corrosion resistance ability. This alloy permits working temperature of 1250℃.
*Chemical Composition, %
Alloy | C | P | S | Mn | Si | Cr | Ni | Al | Fe |
Cr30Ni70 | ≤0.08 | ≤0.02 | ≤0.015 | ≤0.60 | 0.75-1.60 | 28.0-31.0 | Rest | ≤0.50 | ≤1.0 |
*Physical Properties
Max working temperature, ℃ | 1200 | Specific heat, J/g.℃ | 0.461 |
Melting point, ℃ | 1400 | Thermal conductivity, KJ/m.h℃ | 45.2 |
Density, g/cm3 | 8.4 | Coefficient of lines expansion, α×10-6/℃ (20-1000℃) | 17 |
Resistivity, μΩ·m 20℃ | 1.09±0.05 | Micrographic structure | Austenite |
Elongation, % | ≥20 | Magnetic properties | Non-magnetic |
*Feature
Cr30Ni70 alloy is characterized by high resistivity and good oxidation resistance. It has good ductility after use and excellent weldability.
*Application
Cr30Ni70 is used for corrosion resistant electric heating elements in industrial furnaces with reducing atmospheres. It is highly resistant to oxidation in air. Not recommend for use in MgO sheathed heating elements, or applications using nitrogen or carburizing atmospheres.
1. Electrical parts and electronic components.
2. Electric heating elements (home & industrial use).
3. Industrial furnaces up to 1250℃.
4. Heating cables, mats and cords.
