440M (1.4116N) quality stainless steel material, which is called the more advanced version of 440B (1.4112) and 440C (1.4125) quality materials, has a better corrosion resistance and much better workability when compared to its equivalent.
The most important feature of this quality material is that it can rise to very high hardness after heat treatment. After heat treatment, the hardness of this material which can be approximately 57-60 HRC hardness is close to 420 (1.4034) quality material.
This quality material, which is produced as equivalent to 440B and 440C grades, can be used in almost all areas where high surface hardness is desired. This quality material, also called knife material, can be used in all kinds of drill bits where high hardness is required, in medical parts, in places where friction induced wear is present.
|440M Quality Stainless Steel Material List|
|Material Type||Min Diameter (mm)|
Max Diameter (mm)
|Stainless Steel Rod||5||110|
|440M (1.4116N)||0:48 to 0:55%||1.0% max||0.040% max||0.015% max||1.00% max|
|0:05 to 0:15%||0:10 to 0:15%|
Mechanical Properties at Room Temperature
|Quality||440M (1.4116N) X50CrMoV15|
|Tensile strength||Min 650MPa (min) - Before heat treatment|
|Yield strength, (0.2%)||Min 350MPa (min) - Before heat treatment|
|Hardness, Rockwell (HRC)||~ 57-60 HRC (after heat treatment)|
Physical Properties at Room Temperature
|Specific Mass (Specific Gravity)||7700 kg / m³|
|Young's Modulus||215000 N / mm²|
|Electrical resistance||0.065x10 ^ -6 xm|
|Heat permeability||30 W / mK|
|440M Quality Stainless Steel Alternatives|
|QUALITY||In which cases can this quality be preferred instead of 440M quality stainless?|
|440B (1.4112)||The 440B quality has a worse corrosion resistance than the 440M quality. The 440B material is more fragile and more expensive. 440M quality can be preferred in the absence of quality.|
|440C (1.4125)||The 440C has a worse corrosion resistance than 440M quality. The material has a much more brittle structure and is more expensive. The quality of 440C (1.4125) can be slightly higher and the maximum hardness can be preferred instead of 440M.|