4j28 Stainless Steel Tube High-Temperature Precise Alloy

• After-sales Service: Very Good
• Warranty: 1year
• Type: Seamless
• Technique: Hot Rolled
• Material: Alloy Steel
• Surface Treatment: Polished
• Model NO.: 60*4
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration
• Section Shape: Round
• Transport Package: Wooden Box
• Specification: 600*600
• Trademark: dingyuxinda
• Origin: China
• HS Code: 7304112000
• Production Capacity: 50000ton/Year

Product Description

4J28 alloy is an iron nickel based alloy, also known as Invar 36 alloy, mainly composed of iron, nickel, and cobalt, with the following characteristics:
1. Low linear expansion coefficient: The linear expansion coefficient of 4J28 alloy is very low, which can maintain a stable size within the temperature range. Therefore, it is widely used in the manufacturing of precision instruments, optical instruments, spacecraft, and so on.
2. High magnetic permeability: 4J28 alloy has high magnetic permeability and can be used to manufacture electronic components such as magnetic sensors, inductors, transformers, etc.
3. Good mechanical properties: 4J28 alloy has high strength, toughness, and plasticity, and can be used to manufacture various structural components.
4. Good corrosion resistance: 4J28 alloy has good corrosion resistance in atmospheric, water, acid, alkali and other media.
Forging conditions:
The forging temperature of 4J28 alloy should be controlled within the range of 950-1150 ºC, and the heating speed should not be too fast to avoid excessive temperature gradients and strain rates, which may affect material properties. During the forging process, the amount and speed of deformation should be controlled to avoid defects such as pipe cracks and surface cracks. The forged material should undergo annealing treatment to eliminate residual stress and improve microstructure and properties.
4J28 alloy is widely used in precision instruments, aerospace instruments, electronic components, mechanical structural components, and other fields. Due to its stable size and good mechanical properties, it can work stably under various temperatures and environments, and has been widely used.

 

Company Profile
Wuxi Dingyu Xinda Special Steel Co., Ltd. has world-class metallurgical equipment, mature and stable technology, and safe and reliable process flow. The smelting of special functional superalloys adopts the VIM+VAR dual vacuum dual process and the VIM+PESR+VAR triple process for smelting production; Vacuum induction melting (VIM), vacuum consumable (VAR), atmosphere protected electroslag remelting (PESR) and conventional process IF+AOD+LF+VOD metallurgical equipment. Processing equipment such as heat treatment furnaces, peeling machines, rolling straightening machines, cold drawing machines, and coreless grinders; German Spike direct reading spectrometer, hardness machine, tensile machine, impact testing machine, automatic and manual ultrasonic non-destructive testing machine, eddy current non-destructive testing machine, corrosion testing machine,salt spray testing machine, German Leica metallographic microscope and other complete testing equipment. Since 2005, Dingyu.

F A Q                                             
1. How can I know whether you are a reliable company?
We have been engaged in the steel industry for nearly 7 years and have a high reputation in China, We welcome you to inspect our company at any time.
2. Can you guarantee your products?
Yes, we guarantee your 100% satisfaction on all our products. Please feel free to feedback us immediately.
3. Do you provide samples?
Yes, we can provide most of the product samples. We will charge a little sample fee. But we will return the charge if you place an order. if you asked to use DHL, Blue Dart Express, FedEx, etc. to send samples, you can inform us in advance to prepare.
4. Can I visit your company?
Of course, If you want to order our products and visit our company, please contact us to make an appointment.
5. Can you make boxes according to my request ?
Yes,customization service is available,OEM business is appreciated.
When you place the orders,we arrange the production asap,When finish the orders, we will inform you and also we arrange the shipping in the same time.
6. How much is the freight?
It depends on the number and transport methods. When asked about the freight, we want you to let us know your detailed information , such as the product name and quantity and your favorite mode of transport, as well as your designated port or airport. We thank you for providing us the information to estimate the cost.