440C Stainless Bar ASTM A276 SS Bar OD5 - 350mm UNS S44004 Stainless Steel Rod
440C Stainless Bar ASTM A276 SS Bar OD5 - 350mm UNS S44004 Stainless Steel Rod
| Products | Stainless Steel Bar |
| Grade | 440C |
| Diameter | 5 - 350mm |
| Length | 6m or custom cutting any length as request |
| Finishing | Bright Bar / Black Surface |
| Heat Treatment | Solid Solution , ageing |
| Surface Process | Polishing , Peeling |
| Other Grade |
201 303 304 304L 309S 310S 316L 316Ti 317L 321 347 410 420 430 431 2205 2507 904L 254SMO 416 431 440A/B/C.etc |
| MOQ | 500 Kgs |
| Loading Port | Shanghai Port |
| Processing | Cutting |
| Packing | Wooden box or wrapping by PP bag |
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 |
| Grades | S44004/440C | X105CrMo17/1.4125 | SUS440C |
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) |
| Annealed* | 758 | 448 | 14 | 269HB max# | – |
| 204 | 2030 | 1900 | 4 | 59 | 9 |
| 260 | 1960 | 1830 | 4 | 57 | 9 |
| 316 | 1860 | 1740 | 4 | 56 | 9 |
| 371 | 1790 | 1660 | 4 | 56 | 9 |
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
Will 440C rust?
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.
| 440c stainless steel Composition | |||
| Property | SS 440A | SS 440B | SS 440C |
| Carbon | .60 – .75 | .75 – .95 | .95 – 1.2 |
| Manganese | 1.00 max | 1.00 max | 1.25 max |
| Silicon | 1.00 max | 1.00 max | 1.00 max |
| Phosphorus | .04 max | .04 max | .04 max |
| Sulfur | .03 max | .03 max | .04 max |
| Chromium | 16.0 – 18.0 | 16.0 – 18.0 | 16.5 – 18.0 |
| Molybdenum | .75 max | .75 max | .75 max |
| Nickel | .50 max | NA | NA |
| Mechanical Properties | ||||||
| SS440A | SS440B | SS440C | ||||
| Property | Annealed | Hardened & Stress Relieved | Annealed | Hardened & Stress Relieved | Annealed | Hardened & Stress Relieved |
| Ultimate tensile strength, psi | 105,000 | 260,000 | 107,000 | 280,000 | 110,000 | 285,000 |
| 0.2% Yield strength, psi | 60,000 | 240,000 | 62,000 | 270,000 | 65,000 | 275,000 |
| Elongation, % in 2? | 20 | 5 | 18 | 3 | 14 | 2 |
| Reduction of area, % | 45 | 20 | 35 | 15 | 25 | 10 |
| Rockwell hardness | B95 | C51 | B96 | C55 | B97 | C57 |
| Impact strength Izod V-Notch, ft-lbs | NA | 3-6 | NA | 2-5 | NA | 1-5 |
IS 440C stainless steel magnetic?
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.