Stainless Steel 440C ( 1.4125 ) is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Its very high carbon content is responsible for these characteristics, which make SS440C particularly suited to such applications as ball bearings and valve parts.
- Hardenable high-carbon chromium steels designed to provide stainless properties with maximum hardness
- Have maximum hardness together with high strength and corrosion resistance in the hardened and stress relieved condition
- Always used in the hardened or hardened and stress relieved conditions
- None of the alloys has its full corrosion resistance either in the annealed or in the hardened and tempered condition
- Wide applications where good corrosion resistance along with high hardness or abrasion resistance is required
- Standard of 440C Stainless Steel and Equivalent Steel Grades
|Country||USA||BS & DIN||Japan|
|Standard||ASTM A276||EN 10088||JIS G4303|
- ASTM 440C Stainless Steel Mechanical Properties
|Tempering Temperature (°C)||Tensile Strength (MPa)||Yield Strength 0.2% Proof (MPa)||Elongation (% in 50mm)||Hardness Rockwell (HRC)||Impact Charpy V (J)|
Applications of stainless Steel 440C
- Used in numerous applications in areas where a very hard and abrasion resistant stainless is called for
- Applications include pivot pins, dental and surgical instruments, cutlery valve parts, ball bearings, nozzles, hardened steel balls and seats for oil well pumps, plus valve parts
These stainless steels have good corrosion resistance in the hardened and stress relieved conditions. Hence, they should, usually, be used only in that condition. These steels are resistant to such conditions as fresh water, steam, crude oil, gasoline, perspiration, and alcohol.