4J36 (similar grades: Invar, FeNi36, Invar Standard, Vacodil36) alloy, also known as Invar (INVAR) alloy, the Curie point of the alloy is about 230 ℃, below this temperature the alloy is ferromagnetic, with very low The expansion coefficient is higher than this temperature, the alloy is non-magnetic, and the expansion coefficient increases. Alloy control of carbon and manganese composition is very important. 4J36 has corrosion resistance in dry air at room temperature, while corrosion (rust) may occur in other harsh environments, such as humid air. The alloy is mainly used to manufacture components with approximately constant dimensions within the range of temperature changes, and is widely used in the radio industry, precision instruments, meters and other industries.Chemical composition %
Ni
35~37.0
Fe
Bal.
Co
-
Si
≤0.3
Mo
-
Cu
-
Cr
-
Mn
0.2~0.6
C
≤0.05
P
≤0.02
S
≤0.02
FeNi36 Physical properties
Density
Resistivity at 20℃
Thermal conductivity
Elastic modulus
Curie point
(g/cm3)
(Ωmm2/m)
λ/ W/(m*℃)
E/ Gpa
Tc/ ℃
8.1
0.78
11
144
230
FeNi36 Coefficient of expansion
θ/℃
α1/10-6℃-1
θ/℃
α1/10-6℃-1
20~-60
1.8
20~250
3.6
20~-40
1.8
20~300
5.2
20~-20
1.6
20~350
6.5
20~-0
1.6
20~400
7.8
20~50
1.1
20~450
8.9
20~100
1.4
20~500
9.7
20~150
1.9
20~550
10.4
20~200
2.5
20~600
11.0
FeNi36 Mechanical performance
Tensile strength
Elongation
Mpa
%
641
14
689
9
731
8
FeNi36 Temperature Coefficient of Resistance
Temperature range ℃
20~50
20~100
20~200
20~300
20~400
aR/ 103 *℃
1.8
1.7
1.4
1.2
1.0
Product heat treatment process
Stress relief annealing
Heat to 530~550℃, keep warm for 1~2 h. Cool in the furnace.
Annealing
The workpiece is heated to 830~880℃, and kept for 30 minutes. Furnace cooling.
Stabilization
Heat to 830 ℃ in protective atmosphere, keep for 20min. ~ 1h, quench.
Temper
Precautions
The alloy cannot be hardened by heat treatment.
Surface treatment can be sandblasted, polished and pickled.
FeNi36 Supply form and specification
Alloy grade
Form
Size
FeNi36
Wire
D= 0.1~8mm
FeNi36
Strip
W= 5~250mm
T= 0.1mm
FeNi36
Foil
W= 10~100mm
T= 0.01~0.1mm
FeNi36
Bar
Dia= 8~100mm
L= 50~1000mm
Expansion alloy Series: 4J29 4J33 4J36 4J42Shijiazhuang Chengyuan Alloy Material Co., Ltd. is a high-tech enterprise specializing in the production of various alloy materials. It has an advanced and complete production line, including material smelting, surface cleaning, rolling, slitting, and a complete test process. Meet the corresponding quality inspection of different products. The company focuses on the production and supply of various electric heating alloys, expansion alloys, soft magnetic alloys, elastic alloys, high temperature alloys and all kinds of pure metals. The product forms include wire, flat wire, strip, plate, bar, foil, Seamless pipe, wire mesh, powder, etc. can meet the application needs of different customers. The various performance indicators of the product are strictly in accordance with the national standards. If customers put forward non-standard requirements, they can also be implemented by reference.Our products are widely used in heating equipment, machinery manufacturing, electric furnace production, instrumentation, household appliances, mineral mining, aerospace, petroleum and nuclear power and other industries, and have received good market feedback. Our products have stable delivery time, excellent quality, sophisticated packaging, and high repurchase rate. They are not only widely recognized in the domestic market, but also have a good reputation in the international market.* OEM manufacturer* We will deliver the goods to the warehouse of the customer's agent in any city in China.* Terms of delivery: EXW, FCA, FOB, CIF, CPT, DAP* Mode of transport: Sea, Auto, Railway, Air and Express* Payment terms: Bank Transfer, Western Union, PayPal, Alipay* Quality Certificate:In order to improve the quality of products and services, with each order we provide a quality certificate for goods, which includes measured data - chemical composition, electrical resistivity, tensile strength, elongation, melting number, etc.Cheng Yuan Alloy Material Co., LtdEmail: [email protected]Tel .: +86 13673186216+86 311 8803 3197
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* OEM manufacturer * We will deliver the goods to the warehouse of the customer's agent in any city in China. * Terms of delivery: EXW, FCA, FOB, CIF, CPT, DAP * Mode of transport: Sea, Auto, Railway, Air and Express * Payment terms: Bank Transfer, Western Union, PayPal, Alipay * Quality Certificate: In order to improve the quality of products and services, with each order we provide a quality certificate for goods, which includes measured data - chemical composition, electrical resistivity, tensile strength, elongation, melting number, etc. Cheng Yuan Alloy Material Co., Ltd Email: [email protected] Tel .: +86 13673186216 +86 311 8803 3197
