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High Resistivity Hydrogen Annealing Cr30Ni70 Nichrome Alloy Wire

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High Resistivity Hydrogen Annealing Cr30Ni70 Nichrome Alloy Wire

High Resistivity Hydrogen Annealing Cr30Ni70 Nichrome Alloy Wire
High Resistivity Hydrogen Annealing Cr30Ni70 Nichrome Alloy Wire

Large Image :  High Resistivity Hydrogen Annealing Cr30Ni70 Nichrome Alloy Wire

Product Details:
Place of Origin: CHINA
Brand Name: SPARK
Model Number: Cr20Ni80
Payment & Shipping Terms:
Minimum Order Quantity: 10Pcs
Price: US$15.00-30.00/Kg
Packaging Details: with Waterproof Paper or Woven Bag in Wooden Case
Delivery Time: 10-30days
Payment Terms: T/T, L/C
Supply Ability: 2000Kgs/Month

High Resistivity Hydrogen Annealing Cr30Ni70 Nichrome Alloy Wire

Type: Cr30Ni70 Resistance (μΩ.m): 1.09+/-0.05
Treatment: Hydrogen Annealing Certificate: ISO,SGS,ROHS
Surface: Silver(bright)/Black
High Light:

Cr30Ni70 Nichrome Alloy Wire


Hydrogen Annealing Nichrome Alloy Wire


High Resistivity Nichrome Alloy Wire

High Resistivity Hydrogen Annealing Cr30Ni70 Nichrome Alloy Wire

Nichrome Alloy Wire Introduction


Nickel Chromium alloys are medium to low resistance materials typically used in applications with maximum operating temperatures up to 1,200°C .

Nickel Chromium wire has high resistivity, good surface oxidation resistance, high temperature level, and high strength at high temperatures, good processing performance and weldability. Can be widely used in metallurgy, household appliances, machinery manufacturing and other heating components and electrical industry as resistance materials. Long service life.




  • Resistance to oxidation: Most metals oxidize quickly and become brittle and break when heated in air. However, when heated to red-hot temperatures, nichrome wire, develops an outer layer of chromium oxide, which is thermodynamically stable in air, is mostly impervious to oxygen, and protects the heating element from further oxidation.
  • Non-magnetic;
  • Corrosion-resistant;
  • Good Ductility: remaining ductile, even after long-term usage;
  • Excellent weldability and etc.




Alloy Nomenclature Performance Cr20Ni80 Cr30Ni70 Cr15Ni60 Cr20Ni35 Cr20Ni30
Main Chemical composition Ni Rest Rest 55.0-61.0 34.0-37.0 30.0-34.0
Cr 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
Max continuous service temp(ºC) 1200 1250 1150 1100 1100
Resistivity at 20ºC (μΩ·m) 1.09 1.18 1.12 1 1.04
Density(g/cm3) 8.4 8.1 8.2 7.9 7.9
Thermal conductivity (KJ/m·h·ºC) 60.3 45.2 45.2 43.8 43.8
Coefficient of lines expansion(α×10-6/ºC) 18 17 17 19 19
Melting point approx.( ºC) 1400 1380 1390 1390 1390
Elongation at rupture(%) >20 >20 >20 >20 >20
Micrographic structure austenite austenite austenite austenite austenite
Magnetic properties nonmagnetic nonmagnetic Weak magnetic Weak magnetic Weak magnetic


  • Polystyrene cutting
  • Styrofoam cutting
  • Foam cutting
  • Plastic film cutting
  • Electric heaters
  • Night store heaters
  • Composite curing
  • Cartridge heaters
  • Electric furnaces
  • Wind turbines
  • Freeze protection
  • Heated hoses




How can I contact with your company?

We are always ready to serve you via Email, Telephone, Fax, Skype, Whatsapp or Mobile



What is your working time?

Monday-Saturday : 7:30AM-17:00PM (Beijing time, GMT+08.00)

We have public holiday during May.1-3, Oct.1-7 and Chinese New Year holiday . For detail,

please see our update holiday notice. During these period, if you have a demand, Please

send me an email.


Do you provide free samples?

Yes, we can provide a free sample for testing,buyer should bear all the shipping costs.


What is your payment terms?

T/T,L/C,D/A,D/P,Western Union,MoneyGram,Paypal


What is the lead time?

Usually sample lead time is 7 days after payment has been confirmed.

Normal order is 10-30days,it depends on customers' quantity.

Contact Details

Contact Person: chen

Tel: +8615903677007

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