High performance stainless steel W.-Nr. 1.4125 ( DIN X105CrMo17 )
440C is a high-carbon chromium steel designed to provide stainless properties with maximum hardness.
This steel provides very good wear resistance combined with moderate corrosion resistance in mild environments.
440C is heat treatable to RC 59. This grade is commonly used in cutlery and food processing applications.
Chemistry data ( weight % )
Suitable for applications requiring a combination of excellent wear resistance with moderate corrosion resistance,
440C is commonly used in the oil and gas, marine, food and medical industries.
Typical applications are knives, scissors, surgical tools, cutlery, bearings etc.
Specific Gravity 7.7 g/cm3
Density 0.28 lb/in.3
For maximum softness, this steel should be heated uniformly to 1550/1600ºF (843/871°c).
Soak and cool very slowly in the furnace. Brinell hardness approximately 223.
Intermediate or process annealing treatment-heat uniformly to 1350/1400ºF (732/760°c).
Air cool. Brinell hardness about 255.
Heat to 1850/1950ºF (1010/1066°c); soak; quench in warm oil or cool in air.
Do not overheat. When overheated, full hardness cannot be obtained.
See comments under corrosion resistance.
Hardness of approximately Rockwell C 60 will be obtained.
To remove peak stresses and yet retain maximum hardness, temper at least one hour at 300/350°F (149/177°c).
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