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invar controlled expansion alloy 4j36 invar36 strip/foil/sheet

invar controlled expansion alloy 4j36 invar36 strip/foil/sheet

Short Description:

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.The main supply form of the product:wire,strip,plate,bar,pipe.The minimum order quantity is 50kg.

 

 


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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.
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.
4J36 can be welded by all welding processes, and can be welded by oxyacetylene welding, arc welding, electric welding and hydrogen atom welding, and does not require pre- and post-weld heat treatment. Before welding, the material must be in an annealed state, clean, free of oil, scratches, marking paint, etc., low heat input must be used, and the interlayer temperature should be less than 120°C. Since the expansion coefficient of the alloy is related to the chemical composition, in order to avoid changes in the alloy composition caused by welding, it is best to use argon arc welding. The filler metal for welding should preferably contain 0.5% to 1.5% of titanium to reduce welding pores and cracks. 

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

   

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

 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

Mechanical performance

Tensile strength Elongation
Mpa %
641 14
689 9
731 8

 
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
  1. Heat to 830 ℃ in protective atmosphere, keep 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 form and specification

Alloy grade Form Size
4J36 Wire D= 0.1~8mm
4J36 Strip W= 5~250mm T= 0.1mm
4J36 Foil W= 10~100mm T= 0.01~0.1mm
4J36 Bar Dia= 8~100mm L= 50~1000mm

 Expansion alloy Series:

4J29   4J33   4J36   4J42

Company Profile

Shijiazhuang 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.

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Packing and transport

Application area

Application area

Our service

* 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: alexey@chyalloy.com

Tel .: +86 13673186216

+86 311 8803 3197

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FAQ

FREQUENTLY ASKED QUESTIONS

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 to quantity.

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.

Q: How to get in touch with your company?

A: You can contact us at any time via email, phone, fax, Skype, Whatsapp or mobile phone,

Phone/Whatsapp/WeChat: +86-13673186216

Email: alexey@chyalloy.com

Q: What are your working hours?

A: Monday to Sunday: 24 hours, any time, as long as you need it, you can contact us. We will reply to you as soon as possible.

Q: What are the payment terms of your company?

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

Ready to get started? Contact us today for a free quote!

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  • #1 SIZE RANGE
    Large size range from 0.025mm (.001”) to 21mm (0.827”)

    #2 QUANTITY
    Order Quantity ranging from 1 kg to 10 tonnes
    At Cheng Yuan Alloy, we take great pride in customer satisfaction and frequently discuss individual requirements, offering a tailored solution through manufacturing flexibility and technical knowledge.

    #3 DELIVERY
    Delivery within 3 weeks
    We typically manufacture your order and ship within 3 weeks, delivering our products to more than 55 countries across the world.

    Our lead times are short because we stock in excess of 200 tonnes of more than 60 ‘High Performance’ alloys and, if your finished product is not available from stock, we can manufacture within 3 weeks to your specification.

    We take pride in our more than 95% on time delivery performance, as we are always striving for excellent customer satisfaction.

    All wire, bars, strip, sheet or wire mesh are securely packed suitable for transporting by road, air courier or sea, with available in coils, spools and cut lengths. All items are clearly labelled with the order number, alloy, dimensions, weight, cast number and date.
    There is also the option to supply neutral packaging or labelling featuring the customer’s branding and company logo.

    #4 BESPOKE MANUFACTURING
    Order is manufactured to your specification
    We produce wire, bar, flat wire, strip, sheet to your exact specification and in exactly the quantity you are looking for.
    With a range of 50 Exotic Alloys available, we can provide the ideal alloy wire with specialist properties best suited to your chosen application.
    Our alloy products, such as the corrosion resistant Inconel® 625 Alloy, is designed for aqueous and off-shore environments, while the Inconel® 718 alloy offers superior mechanical properties in low and sub-zero temperature environments. We also have high strength, hot cutting wire ideal for high temperatures and perfect for cutting polystyrene (EPS) and heat sealing (PP) food bags.
    Our knowledge of the industry sectors and state-of-the-art machinery means we can reliably manufacture alloys to strict design specifications and requirements from all over the world.

    #5 EMERGENCY MANUFACTURING SERVICE
    Our ‘Emergency Manufacturing Service’ for delivery within days
    Our usual delivery times are 3 weeks, however if an urgent order is required, our Emergency Manufacturing Service ensures your order is manufactured within days and shipped to your door via the fastest route possible.

    If you have an emergency situation and require products even faster, contact us with your order specification. Our technical and production teams will swiftly respond to your quote.

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