High Carbon AISI 440C Stainless Steel Sheet And Plate UNS S44004
AISI 440A/440B/440C EN 1.4109/1.4112/1.4125 UNS S44002/S44003/S44004
The 440 grades form a series of high carbon martensitic stainless steels.
They have basic corrosion resistance and extremely high hardness and wear resistance.
Approximate Composition – 16% Cr, 0.60-1.0% C plus Mo and V in EN grades.
This grade combines the following characteristics:
- Basic corrosion resistance. Lower than other martensitic grades like 431
- Very high hardness increasing with carbon content. 440C capable of 60 Rockwell HRC (~700 HV)
- Very high strength up to 2000 MPa UTS, 1900 MPa 0.2% PS
- Low elongation 4%
- Low toughness 10J
- Very high wear resistance
- Difficult to weld
- Difficult to machine
This series of grades give the highest level of strength/hardness in any martensitic stainless steel.
Consequently, they are used where a basic level of corrosion resistance is required coupled with high
wear resistance or blade sharpness. They are usually supplied in the annealed condition for improved
machinability and then hardened and tempered to develop the high hardness.
Applications which illustrate these features include:
Bearings, valves, knife blades, surgical instruments, tools, moulds, dies.
Composition of stainless 440C ( Nominal )
0.95/1.20 C, 1.00 Mn, 0.040 P, 0.030 S, 1.00 Si, 16.00/18.00 Cr, 0.75 Mo, Bal. Fe
Type 440C is capable of attaining very high hardness; approximately Rockwell C 60.
This stainless principally has been used in bearing assemblies, including bearing balls and races.
Specifications
ASTM A314, ASTM A473, ASTM A493, ASTM A580, ASTM A756, AMS 5618, AMS 5630, AMS 5880, QQ-S-763
Chemical composition ( % typical )
| Material | C | Si | Mn | P | S | Cr | Ni | Mo |
| 440C | 1.03 | 0.39 | 0.40 | 0.029 | 0.002 | 16.39 | 0.15 | 0.35 |
For Details, please Contact
WUXI GUANGLU Special Steel Co., Ltd.
Stainless martensitic • precipitation hardening steel • stainless ferritic — Our answer to your needs
Tel: +86 510 81812873
Email: export@guanglusteel.com
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High Carbon Stainless Steel Sheet And Plate AISI 440C UNS S44004 1.0~60.0*680mm Images
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