 |
Nickel-Chromium Resistance Wire (NiCr), such as Cr30Ni70, is a premium heating element material crafted from high-purity nickel and chromium alloys. Known for its excellent electrical resistivity (1.09 μΩ·m), superior oxidation resistance, and stable performance at temperatures up to 1200°C, NiCr wire is a top choice for precision heating applications.
Cr10Ni90/Cr20Ni80/Cr30Ni70/Cr15Ni60/Cr20Ni35/Cr20Ni30
DLX
Bright
Customized Size
8.4g/cm3
637-784Mpa
ISO9001/ CE/ROHS
5kg
1300-1390°C
5-20 Days
chemical,petroleum
Product Description
Nickel-Chromium Resistance Wire Cr30Ni70 is a premium heating element material crafted from high-purity nickel and chromium alloys. Known for its excellent electrical resistivity (1.09 μΩ·m), superior oxidation resistance, and stable performance at temperatures up to 1200°C,
Nickel-Chromium Resistance Wire Cr30Ni70 is a top choice for precision heating applications. Its non-magnetic properties and robust mechanical strength make it ideal for industrial furnaces, household appliances, and advanced manufacturing. Available in grades like Cr10Ni90, Cr20Ni80, Cr30Ni70, Cr15Ni60, Cr20Ni35, and Cr20Ni30, it meets diverse industry needs.
Max Continuous Service Temperature: 1200°C
Melting Point: 1400°C
Surface: Bright or Oxidized
Condition: Annealed
Capable of operating continuously at temperatures up to 1200°C, ideal for high-heat industrial and domestic applications.
Forms a protective chromium oxide layer, preventing degradation and extending lifespan even in oxidative environments.
With a resistivity of 1.09 μΩ·m, Cr30Ni70 ensures efficient and stable heating with minimal energy loss.
Resists corrosion in acidic, alkaline, and humid conditions, making it suitable for challenging industrial settings.
Easily shaped into coils, spirals, or strips, supporting complex heating element designs for various applications.
Non-magnetic structure makes it ideal for applications requiring minimal electromagnetic interference.
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 | |
Application Field
Nickel-Chromium Resistance Wire Cr30Ni70 is valued for its versatility and reliability across various industries:
Furnace Heating Elements: Used in ceramic, glass, and metal processing furnaces for consistent and high-temperature heating.
Heat Treatment Furnaces: Provides precise temperature control for annealing, tempering, and hardening processes.
Electric Heaters and Kettles: Ensures rapid and efficient heating with long-term durability.
Toasters and Ovens: Supports high-temperature cooking and baking with stable performance.
Metallurgical Furnaces: Ideal for melting and alloying metals in corrosive environments.
Precision Components: Used in manufacturing automotive and aerospace parts requiring controlled heating.
Semiconductor Manufacturing: Provides clean and stable heating for wafer processing and deposition systems.
Resistors and Sensors: Integrated into high-precision resistors and temperature sensors.
Our 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
Product Process
Cr30Ni70, also known as Ni70Cr30 or Nichrome 70/30, is a high-performance nickel-chromium electrothermal alloy containing approximately 70% nickel and 30% chromium. Manufactured in China by DLX ALLOY, it is widely recognized as one of the most stable high-temperature resistance heating wires, capable of continuous operation up to 1250°C (2280°F).
Genuine Cr30Ni70 resistance wire from DLX ALLOY (China) supports a maximum service temperature of 1250°C in oxidizing atmospheres, making it ideal for industrial electric furnaces, kilns, and high-temperature heating elements.
Compared to Cr20Ni80, Cr30Ni70 (Ni70Cr30) offers higher nickel content, resulting in superior oxidation resistance, longer service life at temperatures above 1100°C, and better performance in carburizing or sulfur-containing environments. Many Chinese manufacturers and global buyers choose Cr30Ni70 when extreme durability is required.
We manufacture our products in Jiangsu, China and ship them from China to your country as soon as possible, which usually depends on your product requirements and quantity.
Yes, we can.
