4J36
4J36 is a special low-expansion iron-nickel alloy with ultra-low expansion coefficient. Among them, the control of carbon and manganese components is very important. Cold deformation can reduce the thermal expansion coefficient, and heat treatment within a specific temperature range can stabilize the thermal expansion coefficient. 4J36 is corrosion resistant in dry air at room temperature. In other harsh environments, such as humid air, corrosion may occur
4J36
Product Description:
4J36 is a special low-expansion iron-nickel alloy with ultra-low expansion coefficient. Among them, the control of carbon and manganese components is very important. Cold deformation can reduce the thermal expansion coefficient, and heat treatment within a specific temperature range can stabilize the thermal expansion coefficient. 4J36 is corrosion resistant in dry air at room temperature. In other harsh environments, such as humid air, corrosion may occur
Physical properties:
Density: 8.1g/cm3
Melting point: 1430℃
Curie temperature: 230 ℃
Extreme chemical composition:
Ni: 35-37
Cr:0.2max
Fe: balance
C: 0.03max
Mn: 0.30-0.60
Si:0.2max
Co: 0.5max
P: 0.02max
S: 0.01max
Coefficient of expansion
Temperature | average linear expansion coefficient α,10-6/℃ |
20℃~50℃ | 0.6 |
20℃~100℃ | 0.8 |
20℃~200℃ | 2.0 |
20℃~300℃ | 5.1 |
20℃~400℃ | 8.0 |
20℃~500℃ | 10.0 |
characteristic:
Extremely low thermal expansion coefficient between -250°C and +200°C
Very good plasticity and toughness
Application areas:
Production, storage and transportation of liquefied gas
Measuring and control instruments with operating temperatures below +200°C
temperature regulating device
Screw connector bushings between metals and other materials
Bimetallic and temperature controlled bimetallic
CRP component tempering molds for the aviation industry
Satellite and missile electronic control unit framework below -200°C
Auxiliary electron tube in the electromagnetic lens of the laser control device
form:
Rod, plate, strip, wire, tube