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Cr20Ni30 (Ni30Cr20) is a robust nickel-chromium resistance heating alloy wire designed for reliable performance in demanding high-temperature environments. With balanced nickel and chromium content, this nichrome variant offers high electrical resistivity, superior oxidation resistance, and long service life.
Cr10Ni90/Cr20Ni80/Cr30Ni70/Cr15Ni60/Cr20Ni35/Cr20Ni30
DLX
Bright
8.4g/cm3
ISO9001/ CE/ROHS
5kg
1400°C
10-25 days
Product Description
Cr20Ni30 NiCr wire, also known as Ni30Cr20 or Nikrothal 30 equivalent, is a cost-effective nickel-chromium-iron resistance alloy optimized for continuous operation at elevated temperatures. This high resistivity heating wire forms a protective chromium oxide layer that enhances oxidation and corrosion resistance in air, ensuring consistent performance in thermal cycling conditions.
Key specifications typically include:
Composition: Approximately 20% Chromium, 30% Nickel, balance primarily Iron.
Max Continuous Operating Temperature: Up to 1100°C (2012°F) in air.
Electrical Resistivity: High resistivity for efficient Joule heating.
Forms: Round wire, coils, ribbons (various diameters available).
This nichrome alloy heating wire delivers excellent mechanical strength at high temperatures, good ductility for forming coils, and reliable electrical properties for precision heating applications.
Specification
Shape | Size(mm) |
Wire | 0.05-7.5 |
Rod | 8-50 |
Ribbon | (0.05-0.35)*(0.5-6.0) |
Strip | (0.5-2.5)*(5-180) |
Performance material | Cr10Ni90 | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 | |
composition | Ni | 90 | Rest | Rest | 55.0～61.0 | 34.0～37.0 | 30.0～34.0 |
Cr | 10 | 20.0～23.0 | 28.0～31.0 | 15.0～18.0 | 18.0～21.0 | 18.0～21.0 | |
Fe | -- | ≤1.0 | ≤1.0 | Rest | Rest | Rest | |
Maximum temperature℃ | 1300 | 1200 | 1250 | 1150 | 1100 | 1100 | |
Meltiing point ℃ | 1400 | 1400 | 1380 | 1390 | 1390 | 1390 | |
Density(g/cm3) | 8.7 | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 | |
Resistivity | -- | 1.09±0.05 | 1.18±0.05 | 1.12±0.05 | 1.00±0.05 | 1.04±0.05 | |
Elongation at rupture | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | |
Specific heat J/g.℃ | -- | 0.44 | 0.461 | 0.494 | 0.5 | 0.5 | |
Thermal conductivity KJ/m.h℃ | -- | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | |
Coefficient of lines expansion | -- | 18 | 17 | 17 | 19 | 19 | |
Micrographic structure | -- | Austenite | Austenite | Austenite | Austenite | Austenite | |
Magnetic properties | -- | Nonmagnetic | Nonmagnetic | Nonmagnetic | Nonmagnetic | Nonmagnetic | |
Superior High Temperature Resistance: Stable performance as a resistance heating alloy up to 1100°C with minimal degradation.
Excellent Oxidation & Corrosion Resistance: Protective oxide layer ensures longevity in oxidizing atmospheres.
High Electrical Resistivity: Optimized for efficient conversion of electrical energy to heat in heating elements.
Outstanding Durability & Thermal Stability: High hot strength, creep resistance, and thermal cycling capability for industrial use.
Good Workability: Ductile and weldable nichrome wire easy to form into coils, springs, or custom shapes.
DLX Advantage
CHANGZHOU DLX ALLOY CO, LTD was established in 2002 and has got ISO9001 International Quality Management System Certificate and SGS Certificate. Our factory is professional in researching and producing special alloy material. From melting, drawing, heat treatment, finishing and testing .We offer nickel-based, copper-based, and iron-based alloys, including super alloy, welding materials, anti-corrosion alloy, precision alloy, FeCrAl alloy, NiCr alloy, CuNi alloy, thermocouple and etc, in the form of wire, strip, ribbon, bar, tube, plate.
1.Market Leader - Top 5 in China's nonferrous metal industry
2.Flexible products - Thousands of product specifications,Meet multiple needs of buyers
3.Low MOQ - Can customize samples
4.Short production lead time, fast delivery of whole cabinet
5.Professional inspection equipment - Before delivery, we will use spectrometers, tensile testers and other professional equipment to conduct a comprehensive inspection of the products to ensure that the goods are qualified for acceptance
6.Professional business team - Quickly responds to customer inquiries,24-hour professional quotation online The salesperson will follow the customer's requirements for the use of the product,Professionally recommend more appropriate performance and price products to customers
7.Intact packaging - Packaging according to customer needs.You can customize wooden boxes to ensure that the goods arrive at the destination in good condition
8.Various payment methods - Facilitate customer payment
9.Get good reviews from customers - Old customers have long-term cooperation,The longest is more than 7 years
10.Received various awards - Google is very recognized by us,They give us awards every year
FAQ
A: It supports continuous operation up to 1100°C in air, depending on specific conditions and wire diameter.
A: Cr20Ni30 (Ni30Cr20) offers a more economical option with good high-temp performance, suitable for many applications where full Ni80Cr20 properties are not required.
A: Yes, it has excellent ductility and workability for creating heating coils, springs, and custom resistance elements.
