440C (1.4125) Stainless Steel

440C stainless steel is a martensitic stainless steel grade which can be heat threated up to 57 - 60 HRC. This grade is written as 1.4125 or X105CrMo17 according to EN norm and UNS S44004 according to UNS norm.

 

1.4125 material has a really good capability of getting hardness and it can be hardened up to 57 - 60 HRC. It containes ~%1.05 carbon element and because of high carbon, this grade is a bit brittle and high carbon effects the corrosion resistance as well. 440C materials used in surgical equipments, drills, knifes, valves, bearings. In Bircelik warehouse, you can find alternative grade which is 440M (UGI4116N). Here are some other informations about 440C (1.4125) materials.

 

 

Grade Properties

 

 

General Properties Stars
Corrosion Resistance:
Mechanical Properties:  
Forginability:
Weldinability:
Machinability:

 

 

ALTERNATIVE GRADE -> 440M (1.4116N) Grade Material Stock List

Material Shape Min Diameter (mm)

Max Diameter (mm)

Round 4 110

 

 

440C (1.4125) Chemical Composition
Grade C Mn P S Si Cr Mo
440C (1.4125) %0.95-1.20 %1.0 max %0.040 max %0.03 max %1.00 max

%16-18

%0.40-0.80

 

 

Links About 440C (1.4125) Grade

 

1.4125 (440C) DATASHEET