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.
| General Properties | Stars |
| Corrosion Resistance: |  |
| Mechanical Properties: | |
| Forginability: | |
| Weldinability: | |
| Machinability: | |
ALTERNATIVE GRADE -> 440M (1.4116N) Grade Material Stock List |
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| 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 |
