4j44 Special Import Low Expansion Alloy Material Precision Round Bar Iron Nickel Alloy Material

• Product Type: Rod
• Material: Other
• Carbon Content: Other
• PCD: Other
• Delivery: 7-15 Days
• Price Item: T/T,30% Payment in Advance,70% T/T After The Co
• Model NO.: 4J44
• 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

4J44 expansion alloy

4J44 product features

It has a certain linear expansion coefficient in the temperature range of -60ºC~+450ºC, and can be matched with hard glass and sealed firmly.

Product Usage

It is suitable for vacuum components such as launch tubes, oscillating tubes, ignition tubes, transistors, tube connectors, and relay casings.

Chemical composition

	C	P	S	Mn	Si	Cu	Cr	Mo	Ni	Co	Fe
									34.2	8.50
4J44	0.03	0.020	0.020	0.5	0.30	0.20	0.20	0.20	35.2	9.50	allowance

 

4J44 average linear expansion coefficient

	The sample heat treatment system	Average Linear Expansion Coefficienta,10-6/ ºC
	eating to 900±20 ºC in a hydrogen atmosphere, keeping it warm for 1h, and then heating to 1100±20 ºC, Keep warm for 15 minutes, then cool down to below 200 ºC at a speed of no more than 5 ºC/min.	20-300 ºC	20-400 ºC	20-500 ºC
4J44		4.3~5.1	4.6~5.2

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.