4j33 Imported Precision in High Permeability Soft Magnetic Nickel Base Alloy Material

• Product Type: Rod
• Material: Other
• Carbon Content: Other
• Model NO.: 4J33
• PCD: Other
• Delivery: 7-15 Days
• Price Item: T/T,30% Payment in Advance,70% T/T After The Cop
• Quality Control: Mill Test Certificate Is Supplied with Shipment
• Export Country: USA,Southeast Asia,MID East,Africa,Eastern Asia,
• Transport Package: Waterproof Cloth Packaging and on Pallets, or a
• Specification: 2.0*1250*C/1.5*1250*C/0.8*1250*C/1.0*1250*C
• Trademark: China
• Origin: China

Product Description

4J33 overview
4J33 is a ceramic sealing alloy developed in combination with the characteristics of my country's ceramics. The alloy has a linear expansion coefficient similar to that of 95% Al2O3 ceramics in the temperature range of -60 ° C to 600 ° C. It is mainly used for matching and sealing with ceramics, and is an important sealing structure material in the electric vacuum industry.

organizational structure
Phase transition temperature: 4J34 alloy γ→α phase transition temperature is below -80°C. 4J33 is more stable than 4J34.
 Alloy structure: The structure of the alloy is single-phase austenite.
When the alloy composition is inappropriate, different degrees of transformation from austenite (γ) to acicular martensite (α) will occur at room temperature or low temperature. The phase transition is accompanied by a volume expansion effect. The expansion coefficient of the alloy increases accordingly, resulting in a sharp increase in the internal stress of the seal, and even causing partial damage. The main factor affecting the microstructure stability of the alloy at low temperature is the chemical composition of the alloy. It can be seen from the Fe-Ni-Co ternary phase diagram that nickel is the main element to stabilize the austenite (γ) phase, and a high nickel content is conducive to the stability of the γ phase. As the total deformation rate of the alloy increases, its microstructure tends to be more stable. The compositional segregation of the alloy may also cause the γ→α phase transformation in the local area. In addition, coarse grains can also promote the γ→α phase transition [2,5,6].
Grain size: The standard stipulates that the grain size of the deep-drawn strip should not be less than grade 7, and the grain size smaller than grade 7 should not exceed 10% of the area. For strips with a thickness less than 0.13mm, when estimating the average grain size, the number of grains along the thickness direction of the strip should not be less than 8.
The 1mm thick 4J33 strip with a cold strain rate of 60% to 70% is annealed at the temperature shown in Table 4-1, and after air cooling, the grain size is rated according to Appendix A of YB 027-1992.
 

Chemical composition

C	Mn	Si	P	S	Ni	Co	Fe
					32.0	14.0
0.05	0.50	0.30	0.020	0.020	33.6	15.2	allowance

physical properties
Tensile strength σb/MPa539
Yield strength σP0.2/MPa343
Elongation δ/% 32
Hardness HV158

Solucky steel Limited is a third-party supply chain service enterprise focusing on materials for automobiles, high-end household appliances, as well as material processing and storage. Its headquarters and warehouse base are set up in Shanghai BaoShan, and has branches all over the country, 20+ subsidiary companies,including Foshan, Guangdong, Chongqing, Wuxi, etcz.
Main Products

 

Product Application

Machines & Processing

Packing & Delivery & logistics

Why Choose Us

FAQ
1.Where is your factory?
Our head office and warehouse located in Shanghai--the biggest steel making center of China 

2.How long is your delivery time?                                                                                
Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock, it is according to quantity.      
                                                                         
3.What about the MOQ?                                                                                
MOQ only 200KG,include coils and sheets     
                                                                           
4. How long is your lead time?                                                                                
In general, our delivery time is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.
                                                                                
5.How's your product quality?                                                                                
We only sell mid to high end steel materials,100% quality guarantee and cost-effective.                                                                                
6.What are your terms of payment?                                                                                
You can make the payment to our bank account,T/T, 30% deposit in advance, 70% balance against the copy of B/L.  
                                                                             
7.How many countries you already exported to?                                                                                
We have exported to America, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya, Ghana,somalia and other African countries.Our export experience is rich, we familiar with different market demands, can help customers avoid a lot of trouble.     
                                                                           
8.What are the certifications for your products?                                                                                
We have ISO 9001, MTC, third parties' inspections are all available such SGS, BV ect.