NXF GROUP

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Invar36/FeNi36/4j36/1.3912/UNS K93600 nickle alloy steel round bar black/birght surface alloy bar

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Surface 8.1g/cm3
Material Ni-Fe-Mn
Brand: NXF
Alloy Or Not 0.78
+86-13917160311
产品详情
Product Paramenters

Invar 36 Chemical composition, %
Ni
35~37
Fe
Bal.
Co
-
Si
≤0.3
Mo
-
Cu
-
Cr
-
Mn
0.2~0.6
C
≤0.05
P
≤0.02
S
≤0.02



Invar 36Physical properties
Density (g/cm3)
Resistivity at 20℃(Ωmm2/m)
Thermal conductivity, λ/ W/(m*℃)
Curie point
(Tc/ ℃)
Elastic Modulus
(E/ Gpa)
8.1
0.78
11
230
144

Invar 36Mechanical behavior


Tensile strength(Mpa)
Elongation(%)
641
14
689
9
731
8

Invar 36Coefficient 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

Invar 36Temperature 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 Description
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.
The alloy heat treatment can be divided into: stress relief annealing, intermediate annealing and stabilization treatment. (1) Stress relief annealing, the purpose is to eliminate the residual stress of the parts after machining, the temperature is 530～550℃, the heat preservation is 1～2h, and the furnace is cooled. (2) Intermediate annealing, the purpose is to eliminate the work hardening phenomenon caused by the cold rolling, cold drawing, and cold stamping of the alloy, so that the subsequent processing can be continued. Specifically, the workpiece is heated to 830-880°C, kept for 30 minutes, furnace-cooled or air-cooled. (3) The purpose of stabilization is to obtain a lower expansion coefficient while maintaining stable performance.

Heat treatment process
Stress relief annealing
Heat to 530~550℃, keep for 1~2 h. Cool in the furnace
annealing
Heating to 830~880℃ ,keep holding for 30 min. Furnace cooling
Stabilization
(1) Heat to 830 ℃ in a protective atmosphere, hold for 20min. ~ 1h, quench (2)Temper
Precautions
(1) The alloy cannot be hardened by heat treatment
(2)Surface treatment can be sandblasted, polished and pickled

Supply category
Form
Specification
Wire
Diameter=0.025mm~8mm
Flat wire
Width=0.4~40mm
Thick=0.03~2.9mm
Strip
width=8~250mm
ThickT=0.1~3.0mm
Foil
width=6~120mm
Thick=0.003~0.1mm
Bar
Diameter=8~100mm
Long=50~1000

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Packing & Delivery



Our services

* 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


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* 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.

FAQ

Q: Does your company provide samples?A: Yes, we provide samples for free, and buyers need to bear the corresponding shipping costs.


Q: How long is your company's delivery time?

A: If the goods are in stock, it is usually 5-10 days. Or if the goods are not in stock, it is 15-20 days, according toquantity.


Q: What are the payment terms of your company?A: Payment <=1000USD, 100% in advance. For payment>=1000 USD, pay 30% T/T in advance, and pay the balance before shipment.


Q: Do you test all goods before delivery?A: Yes, we have a strict product inspection process, and 100% testing will be carried out before delivery.

Q: How does your company maintain long-term and stable business relationships with customers?A: 1. We strictly control the quality of our products and the prices are reasonable to ensure that our customers benefit;    2.We do our best to do a good job in product packaging to ensure that the product is intact during transportation.    3.In order to meet the requirements of customers in different countries for product performance, we have a separate test furnace to debug product performance.