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Spiral Electric Resistor Nicr Alloy 1 - 5 Mohm For Air Conditioner Heating Elements

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Spiral Electric Resistor Nicr Alloy 1 - 5 Mohm For Air Conditioner Heating Elements

Spiral Electric Resistor Nicr Alloy 1 - 5 Mohm For Air Conditioner Heating Elements
Spiral Electric Resistor Nicr Alloy 1 - 5 Mohm For Air Conditioner Heating Elements Spiral Electric Resistor Nicr Alloy 1 - 5 Mohm For Air Conditioner Heating Elements Spiral Electric Resistor Nicr Alloy 1 - 5 Mohm For Air Conditioner Heating Elements Spiral Electric Resistor Nicr Alloy 1 - 5 Mohm For Air Conditioner Heating Elements Spiral Electric Resistor Nicr Alloy 1 - 5 Mohm For Air Conditioner Heating Elements Spiral Electric Resistor Nicr Alloy 1 - 5 Mohm For Air Conditioner Heating Elements

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Product Details:
Place of Origin: Shanghai, China
Brand Name: TANKII
Certification: ISO9001:2008
Model Number: 6J40
Payment & Shipping Terms:
Minimum Order Quantity: 50kg
Price: To negotiate
Packaging Details: Carton, Plywood case as clients´ requirements
Delivery Time: 7-12 days
Payment Terms: L/C, T/T, Western Union, Paypal
Supply Ability: 100+TON+MONTH

Spiral Electric Resistor Nicr Alloy 1 - 5 Mohm For Air Conditioner Heating Elements

Description
Material: Constantan Composition: Cu Ni
Shape: Spiral/ Spring Or As Customs Demanded Conductivity: High
Application: Air Conditioner Heating Elements Resistance Range: 1-5 MOhm
High Light:

oven heating element

,

tubular heating elements

Spiral Electric Resistor Nicr Alloy 1 - 5 Mohm For Air Conditioner Heating Elements

 

1.Material General Description

Constantan is a copper-nickel alloy also known as Eureka, Advance, and Ferry. It usually consists of 55% copper and 45% nickel. Its main feature is its resistivity, which is constant over a wide range of temperatures. Other alloys with similarly low temperature coefficients are known, such as manganin (Cu86Mn12Ni2).

 

For the measurement of very large strains, 5% (50 000 microstrian) or above, annealed constantan (P alloy) is the grid material normally selected. Constantan in this form is very ductile; and, in gauge lengths of 0.125 inches (3.2 mm) and longer, can be strained to >20%. It should be borne in mind, however, that under high cyclic strains the P alloy will exhibit some permanent resistivity change with each cycle, and cause a corresponding zero shift in the strain gauge. Because of this characteristic, and the tendency for premature grid failure with repeated straining, P alloy is not ordinarily recommended for cyclic strain applications. P alloy is available with S-T-C numbers of 08 and 40 for use on metals and plastics, respectively.

 

2. Spring Introduction and applications

 

A spiral torsion spring, or hairspring, in an alarm clock.

A volute spring. Under compression the coils slide over each other, so affording longer travel.

Vertical volute springs of Stuart tank

Tension springs in a folded line reverberation device.

A torsion bar twisted under load

Leaf spring on a truck
Springs can be classified depending on how the load force is applied to them:

Tension/extension spring – the spring is designed to operate with a tension load, so the spring stretches as the load is applied to it.
Compression spring – is designed to operate with a compression load, so the spring gets shorter as the load is applied to it.
Torsion spring – unlike the above types in which the load is an axial force, the load applied to a torsion spring is a torque or twisting force, and the end of the spring rotates through an angle as the load is applied.
Constant spring - supported load remains the same throughout deflection cycle.
Variable spring - resistance of the coil to load varies during compression.
Variable stiffness spring - resistance of the coil to load can be dynamically varied for example by the control system,some types of these springs also vary their length thereby providing actuation capability as well.
They can also be classified based on their shape:

Flat spring – this type is made of a flat spring steel.
Machined spring – this type of spring is manufactured by machining bar stock with a lathe and/or milling operation rather than a coiling operation. Since it is machined, the spring may incorporate features in addition to the elastic element. Machined springs can be made in the typical load cases of compression/extension, torsion, etc.
Serpentine spring - a zig-zag of thick wire - often used in modern upholstery/furniture.

 

 

3.Chemical Composition and Main Property of Cu-Ni Low Resistance Alloy
 

PropertiesGrade
 
CuNi1
 
CuNi2
 
CuNi6
 
CuNi8
 
CuMn3
 
CuNi10
 
Main Chemical Composition
 
Ni
 
1
 
2
 
6
 
8
 
_
 
10
 
Mn
 
_
 
_
 
_
 
_
 
3
 
_
 
Cu
 
Bal
 
Bal
 
Bal
 
Bal
 
Bal
 
Bal
 
Max Continuous Service Temperature(oC)
 
200
 
200
 
200
 
250
 
200
 
250
 
Resisivity at 20oC (Ωmm2/m)
 
0.03
 
0.05
 
0.10
 
0.12
 
0.12
 
0.15
 
Density(g/cm3)
 
8.9
 
8.9
 
8.9
 
8.9
 
8.8
 
8.9
 
Thermal Conductivity(α×10-6/oC)
 
<100
 
<120
 
<60
 
<57
 
<38
 
<50
 
Tensile Strength(Mpa)
 
≥210
 
≥220
 
≥250
 
≥270
 
≥290
 
≥290
 
EMF vs Cu(μV/oC)(0~100oC)
 
-8
 
-12
 
-12
 
-22
 
_
 
-25
 
Approximate Melting Point( oC)
 
1085
 
1090
 
1095
 
1097
 
1050
 
1100
 
Micrographic Structure
 
austenite
 
austenite
 
austenite
 
austenite
 
austenite
 
austenite
 
Magnetic Property
 
non
 
non
 
non
 
non
 
non
 
non
 

 
PropertiesGrade
 
CuNi14
 
CuNi19
 
CuNi23
 
CuNi30
 
CuNi34
 
CuNi44
 
Main Chemical Composition
 
Ni
 
14
 
19
 
23
 
30
 
34
 
44
 
Mn
 
0.3
 
0.5
 
0.5
 
1.0
 
1.0
 
1.0
 
Cu
 
Bal
 
Bal
 
Bal
 
Bal
 
Bal
 
Bal
 
Max Continuous Service Temperature(oC)
 
300
 
300
 
300
 
350
 
350
 
400
 
Resisivity at 20oC (Ωmm2/m)
 
0.20
 
0.25
 
0.30
 
0.35
 
0.40
 
0.49
 
Density(g/cm3)
 
8.9
 
8.9
 
8.9
 
8.9
 
8.9
 
8.9
 
Thermal Conductivity(α×10-6/oC)
 
<30
 
<25
 
<16
 
<10
 
<0
 
<-6
 
Tensile Strength(Mpa)
 
≥310
 
≥340
 
≥350
 
≥400
 
≥400
 
≥420
 
EMF vs Cu(μV/oC)(0~100oC)
 
-28
 
-32
 
-34
 
-37
 
-39
 
-43
 
Approximate Melting Point( oC)
 
1115
 
1135
 
1150
 
1170
 
1180
 
1280
 
Micrographic Structure
 
austenite
 
austenite
 
austenite
 
austenite
 
austenite
 
austenite
 
Magnetic Property
 
non
 
non
 
non
 
non
 
non
 
non
 

 

 

Spiral Electric Resistor Nicr Alloy 1 - 5 Mohm For Air Conditioner Heating Elements 0Spiral Electric Resistor Nicr Alloy 1 - 5 Mohm For Air Conditioner Heating Elements 1

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