440C Stainless Steel

Material Data Sheet isisz-logo
Material:

440C Stainless Steel

 
Component Elements Properties  

Carbon, C 0.95 – 1.2 %

Chromium, Cr 16 – 18 %

Iron, Fe 80.1 – 83.1 %

Molybdenum, Mo <= 0.75 %
 
Melting Point 1483oC
Heat Treated Yes
 
Density

7.69

g/cc

 

Linear expansion coefficient

 

12.5×10-6

/C

 

Hardness

 

85

Rockwell C

 

Elastic Modulus

 

200

Gpa

 

Poisson’s ratio

 

0.3

 
Electrical resistance

 

Ohm.mm2/m

 

 
Notes:  
Martensitic stainless steel. Excellent strength, hardness, and wear resistance while offering some corrosion resistance. Magnetic. Often used for automotive, cutlery, industrial equipment, power hand tools, pumps, sporting equipment industry, surgical instruments, valves, and applications where very high strength, hardness, and wear resistance, and some corrosion resistance is required.
 
Typical Bearing Uses  
  • Hybrid Bearings
  • Corrosion resistant*
  • Vacuum environments
  • Cryogenic bearings
  • High temperature
  • Insulating**
  • High Speed

 

*Limited corrosion resistance, 440C is usual coated to increase its corrosive resistance abilities

**Used as insulating bearings as a Hybrid