Product Details
Place of Origin: China
Brand Name: KAIXIN
Certification: ISO9001:2015
Model Number: KX-Alloy40
Payment & Shipping Terms
Minimum Order Quantity: 200KG
Price: To negotiate
Packaging Details: Wooden Box, size as per guests's request
Delivery Time: 45~60days
Payment Terms: T/T, L/C
Supply Ability: 50~80TONS per MONTH
Features: |
Low Linear Expansion Coefficient In The Range Of 20-100°C And Easy To Cut Machining. |
Shape: |
Wire,Strip,Rod,Tube,Plate |
Alloy Type: |
Iron Nickel Cobalt Alloy |
Raw Materials: |
NI32.4-33.4%,CO7-8%,Fe Rem |
Executive Standard: |
YB/T 5241 |
Delivery State: |
Soft State |
Application: |
To Produce A Variety Of Klystron, Microwave Tube Cavity In The Electric Vacuum Industry |
Size: |
Negotiable |
Features: |
Low Linear Expansion Coefficient In The Range Of 20-100°C And Easy To Cut Machining. |
Shape: |
Wire,Strip,Rod,Tube,Plate |
Alloy Type: |
Iron Nickel Cobalt Alloy |
Raw Materials: |
NI32.4-33.4%,CO7-8%,Fe Rem |
Executive Standard: |
YB/T 5241 |
Delivery State: |
Soft State |
Application: |
To Produce A Variety Of Klystron, Microwave Tube Cavity In The Electric Vacuum Industry |
Size: |
Negotiable |
Product Description and Application
Alloy 40 is also known as 4J40
Alloy 40 is Fe-Ni-Co ternary alloy and its curie point is above 300℃. The alloy has a low expansion coefficient in the temperature range of -20 ~ 300℃, and the transformation from austenite (γ) to martensite (M) does not occur until -60℃. The alloy is mainly used in the manufacture of highly precise instrument parts and electronic devices requiring sizes in the temperature range of -50 to 300℃
Process Performance and Requirements
Vacuum Induction Furnace(VIM) and Electroslag Remelting Furnace(ESR)
| Alloy Grade | Chemical Composition (mass fraction)(％) | ||||||||
| C | Si | P | S | Mn | Cu | Ni | Co | Fe | |
| ≤ | |||||||||
| Alloy 40 | 0.05 | 0.15 | 0.02 | 0.02 | 0.25 | --- | 32.4～33.4 | 7.0～8.0 | Rem |
| Alloy Grade | Sample Heat Treatment Institution | Average coefficient of linear expansionα(10-6/ K) | |
| 20～100℃ | 20～300°C | ||
| 4J40 | The semi-finished sample was heated to 840±10°C, hold for 1 hour, water quenched, and then the sample was processed into finished sample. Heat preservation 1 hour at 315±l0℃ with furnace cooling or air cooling | ～ | ≤2.0 |
| Alloy Grade |
Average Coefficient of Linear Expansion α(10-6/ K) |
|||||
| 20～50℃ | 20～100℃ | 20～200℃ | 20～300℃ | 20～400℃ | 20～500℃ | |
| 4J40 | 1.4 | 1.3 | 1.2 | 1.7 | 4.5 | ～ |
Professional Customization
| Cold-drawn Wire | ¢0.3~¢18mm(Delivery in rolls or trays) |
| Hot-Rolling Wire | ¢5.5~¢20mm(Delivery in rolls) |
| Strip | thickness 0.1~4.5*width 6~350mm(Supply in rolls or straight strips) |
| Smooth Forged Rod on a Lathe |
¢60~350mm,L800-2500mm |
| Hot-rolled Burnishing | ¢20~80mm,L1000-5000mm |
| Cold Drawn and Burnishing | ¢2.5~18mm,L1000-8000mm |
| Seamless Tube | ¢1~275mm,wall thickness 0.2~30,L1000-8000mm |
