4j34 Imported Precision and High Hardness of Nickel Base Alloy Soft Magnetic Alloy

• Product Type: Rod
• Material: Other
• Carbon Content: Other
• Model NO.: 4J34
• PCD: Other
• Delivery: 7-15 Days
• Price Item: T/T,30% Payment in Advance,70% T/T After The Co
• 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

4J34 
4J34 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.
4J34 heat treatment system standard stipulates the expansion coefficient and the performance test sample of low temperature structure stability, heat to 900ºC±20ºC in protective atmosphere or vacuum, keep it for 1h, cool to below 200ºC at a speed of no more than 5ºC/min, and release it from the furnace .

4J34 Application Overview and Special Requirements
The alloy has been used by aviation factories for a long time and has stable performance. It is mainly used for sealing electric vacuum components and Al2O3 ceramics. Manufacture electrodes, lead-out disks and lead-out wires of large electron tubes and magnetrons. In use, the selected ceramics should match the expansion coefficient of the alloy. When selecting an alloy, the microstructure stability at low temperature should be strictly tested according to the service temperature. Appropriate heat treatment should be carried out during processing to ensure that the material has good deep drawing and drawing properties. When using forgings, their airtightness should be strictly checked.
 

Chemical composition

C	Mn	Si	P	S	Ni	Co	Fe
					28.5	19.5
0.05	0.50	0.30	0.020	0.020	29.5	20.5	allowance

Under the condition of average linear expansion coefficient reach standard, allowed to nickel, cobalt content deviate from the prescribed scope.

4J34 physical and chemical properties

4J34 melting temperature range The melting temperature of the alloy is about 1450 ºC.

Density ρ=8.29g/cm3.

Resistivity ρ=0.45μΩ·m.

Magnetic properties

Curie point Tc=470ºC.
 

H/(A/m)	B/T	H/(A/m)	B/T
8	0.7×10-2	160	0.65
16	1.5×10-2	400	1.01
24	2.7×10-2	800	1.21
40	5.6×10-2	2000	1.46
80	0.25	4000	1.62

At 4000A/m, the residual magnetic induction intensity Br=0.89T, the coercive force Hc=83.2A/m[1,2].
4J34 Chemical Properties The alloy has good corrosion resistance in the atmosphere, fresh water and sea water.
4J34 mechanical properties
Performance specified in 4J34 technical standard
4J34 Hardness The hardness of the deep-drawn strip should meet the requirements in the table. Strips with a thickness not greater than 0.2mm are not subject to hardness testing.

state	δ/mm	HV
State of deep drawing	>2.5	≤170
≤2.5	≤165

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.