Home > Resistance Alloy >

Automotive Resistance Alloy Cr20Ni80 Oxidation Resistance For Industrial Heating

Product Categories

Monel Alloy [13]
Inconel Alloy [34]
Resistance Alloy [20]
Expansion Alloys [4]
Incoloy Alloy [17]
Hastelloy Alloy [14]
Cobalt Alloy [8]
Soft Magnetic Alloy [15]
Pure Nickel [3]
Stainless Steel [1]
Noble Metal [1]
Nickel Based Welding Products [9]
High Temperature Alloy [11]
Others [4]

Wuxi Nickel Alloy New Material Technology Co., Ltd

Trust Seal

Verified Supplier

Credit Check

Supplier Assessment

Contact Now

Automotive Resistance Alloy Cr20Ni80 Oxidation Resistance For Industrial Heating

Name: Automotive Resistance Alloy Cr20Ni80 Oxidation Resistance For Industrial Heating
Brand: NikTech
Price: 1 USD

MOQ : 150kgs

Price : Negotiatable

Payment Terms : L/C,T/T,Western Union

Supply Ability : 300 Ton per Month

Delivery Time : 2-30days

Packaging Details : carton, plywood pallet

Place of Origin : China

Brand Name : NikTech

Certification : ISO 9001:2008

Model Number : Cr20Ni80

Thermal Conductivity : 11-18 W/m·K

High Temperature Resistance : Up to 1000°C

Applications : Heating elements, resistors, thermocouples, etc.

Available Forms : Wire, strip, sheet, foil, rod, bar, etc.

Corrosion Resistance : Excellent

Tensile Strength : 600-800 MPa

Composition : Nickel, chromium, iron and other elements

Elongation : 20-30%

Density : 7.2-8.4 g/cm3

Low Temperature Resistance : Down to -200°C

Electrical Resistivity : 1.0-1.5 μΩ·m

Contact Now

Cr20Ni80 Resistance Strip – Exceptional Thermal Stability & Oxidation Resistance for Industrial Heating

Description

Cr20Ni80 resistance strip is a high-performance nickel-chromium alloy (80% nickel, 20% chromium) designed for demanding high-temperature applications requiring superior oxidation resistance, mechanical durability, and stable electrical resistivity. Renowned for its ability to withstand temperatures up to 1,200°C (2,192°F), this alloy forms a protective chromium oxide (Cr₂O₃) layer that prevents scaling and degradation in oxidizing atmospheres. Its low iron content (<1%) and controlled trace elements (e.g., manganese, silicon) ensure minimal embrittlement and long-term reliability in cyclic heating environments such as industrial furnaces, electric heaters, and aerospace components.

Certified to ASTM B344 and GB/T 1234 standards, Cr20Ni80 strip achieves a tensile strength of 650–850 MPa and elongation ≥20%, outperforming conventional Fe-Cr-Al alloys in high-temperature stability. With an electrical resistivity of 1.09 µΩ·m and a low temperature coefficient of resistance (TCR), it delivers consistent energy efficiency in air, vacuum, or inert gas environments, making it ideal for precision heating applications in sectors like energy production, chemical processing, and consumer electronics.

Technical Specifications (Table)

Property	Value	Standard
Chemical Composition	Ni: 75–80%, Cr: 19–21%, Fe: ≤1.0%	ASTM B344, GB/T 1234
	Mn: ≤0.6%, Si: ≤1.0%, C: ≤0.08%	DIN 17470
Mechanical Properties	Tensile Strength: 650–850 MPa	ASTM E8
	Elongation: ≥20%
Physical Parameters	Density: 8.4 g/cm³	ISO 6892
	Melting Point: 1,400°C
	Electrical Resistivity: 1.09 µΩ·m

Applications

Industrial Furnaces: Heating elements for annealing, sintering, and heat treatment processes.
Energy Sector: Electric boilers, nuclear reactor components, and solar thermal systems.
Consumer Appliances: Oven coils, toasters, and hair straighteners.
Aerospace: Ignition systems and turbine blade heating elements.
Automotive: Glow plugs, exhaust gas recirculation (EGR) heaters.

Q&A

Q1: What is the maximum continuous operating temperature for Cr20Ni80 strip?
A: 1,200°C in oxidizing atmospheres and 1,050°C in reducing or vacuum environments.

Q2: Can Cr20Ni80 withstand sulfur-rich environments?
A: Limited resistance. For sulfur exposure above 800°C, consider alloys with higher chromium or molybdenum content.

Q3: Is pre-oxidation necessary for optimal performance?
A: Optional but recommended. Heat-treat at 900–1,000°C for 1 hour to enhance oxide layer adhesion.

Product Tags: