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Brand Name: xagy
Model Number: Fe-Ni29C17
Elongation (≥ %): 5
Ultimate Strength (≥ MPa): 585
Powder Or Not: Not Powder
Resistance (μΩ.m): 0.48
Ni (Min): 28.5
Grade: 4J29
Application: gass to mtal seals
Type: Nickel Bar
Place of Origin: China (Mainland)
surface: bight
standard: RoHs/ISO001
aplication: industry

Specifications

DESCRIPTION

Kovar Alloy  is a vacuum melted, iron-nickel-cobalt, low expansion alloy whose chemical composition is controlled within narrow limits to assure precise uniform thermal expansion properties. Extensive quality controls are employed in the manufacture of this alloy to ensure uniform physical and mechanical properties for ease in deep drawing, coining, stamping and machining.

APPLICATION

Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials. This alloy has found wide use in application where high reliability is a necessity. In power tubes, microwave tubes, transistors, diodes, inter-grated circuits and has been used for the flat pack and the dual-in-line package.
Best supplier in chna supply finest quality kovar 4J29
CROSS REFERENCE

 Russia  USA  UK JAPAN  FRANCE  GERMANY 
 29HK  KOVAR  NILO K KV-1   DEVER PO VACON12 
 29HK-ВИ  RODAR/TEACHALLONY GLASS29-17 TELEASEAL   KV-2/KV-3 DLIVER P1   SILVAR
TYPICAL CHEMISTRY
 C MN   SI CU   CR MO  NI  CO  FE 
 0.03 0.020  0.020  0.50  0.30   0.20 0.20  0.20  28.5-29.5   16.8-17.8  BALANCE
PHYSICAL PROPERTIES
 Specific gravity    8.36
Density  lb/cu in  0.302
   kg/cu m  8359
 Thermal conductivity Btu-in/ft2/hr/°F  120
   W/m-K  17.3
 Curie temperature °F  815
   °C  435
 Melting Point °F  2640
   °C  1450
 Modulus of elasticity psi x 10(6)  20
   MPa x 10(3)  138
 Electrical resistivity ohm-cir mil/ft  294
   microhm-mm  490
MECHANICAL PROPERTIES
 

Tensile Strength

Ksi
MPa
 715
518
 

Yield Strength

Ksi
MPa
 40
276
 Elongation % in 2 in  30
 Typical Hardness Ann Rockwell HRB80
 

Modulus of Elasticity

 Mpsi
KMP
 30
207
AVERAGE COEFFICIENT OF LINEAR EXPANSION
 Heat Treatment of the Samples 20300

20~400

 
20~450
 

Heat to temperature of  900±20 in the hydrogen, hold for 1h;

re-heat to 1100±20, hold for 15 min.; cooled to 200 at a rate

less than 5/min

   4.6-5.2 5.1-5.5 
LINEAR COEFFICIENT OF THERMAL EXPANSION
20~200  20300  20~400  20~450  20~500  20~600 20~700

20~800

 
 5.9 5.3  5.1   5.3 6.2  7.8  9.2  10.2 
Best supplier in chna supply finest quality kovar 4J29Best supplier in chna supply finest quality kovar 4J29Best supplier in chna supply finest quality kovar 4J29



WHY US ?

1. We can tailoring your unique requirements with ASTM, UNS ,GOST, standards.

2. We can produce more people cannot produce products

3. Short Lead-time

4. Leading Edge Technology

5. Good quality control in production process, ISO9001:2008, SGS, CQC, approved.

6. Excellent quality and High cost of performance

7. Available in an extensive range of stock or custom size.

8. The whole process from raw material to finished products can be traced.

9. 40000 square meters workshop, advanced facilities and test equipment .

OUR SERVICES

1.Sample free

2, Faster delivery
3, Helpful staff
4, Quick response
6, Testing before shipping 
7, We will reply you for your inquiry in 24 hours.

8, Advanced facilities

9. Technical support

10. No min order request


FAQ

1.Q: How can I trust this factory ?

   A: Our stock number is 836660(China new stock market), also you can visit our web . Our factory's License and certificate appear on the website.(License Number can check the aptitude of the factory on Chinese Gov web ,English version available )

2. Q: Is this factory far away from the port? Is this will take longer for delivery?

   A: From Xi'an to any port in China with in one day, convenient transportation only can improve the delivery.

 3. Q: Where is your factory located? How can I visit there?

   A: Our factory is located in Xi'an, Shaanxi Province, China.
       All our clients from all over the world, are warmly welcome to visit us! Free pick up !

4. Q: How can I get some samples?
     A: We are honored to offer you samples.(sample will delivery as our stock size)
5.Q: How does your factory do regarding quality control?
   A. Quality is priority. our factory have advanced facilities, High qualified technical personnel and technical support and always attach great importance to quality controlling from beginning to end. All requirements with ASTM, UNS, GOST standards.

6.Q Are you ISO 9001 approved ?

  A:Yes,we have held ISO 9001 approval since 2000.

7.Q; How can I pay ?

  A: Payment can be made by T/T, L/C, D/A, D/T ,Western Union .

8.What is your minimum order quantity?

A: We can manufactures from as small as few kilogram to your specification.

9.Q: What is your standard of the lead time ?

  A: Typical manufacturing lead times are around three working weeks.

     If you have an urgent requirement, we have an emergency manufacturing service(EMS)available .

10.Q: Do you offer testing services?

   A:Yes ,we can offer test date for you. Although we are not certified by international authority, our equipment is regularly calibrated and certified and our staff are fully competent. We can carry out for you ,using our in-house equipment.

11.Q: Do you deliver worldwide ?

   A: Precision alloy supplies customers world wide.by Air, Sea, Ground, We can despatch using your  carrier account if you prefer.  All products are packed suitably for transportation.

12.Q: Can you make to my specification/drawing ?

A:We do manufacture to individual specifications / drawings.  Please send us your specification / drawing for our production team to confirm if we can meet your requirements.