440C Stainless Steel
UNS S44004 | ASTM A276 | AMS 5630/5880420 Stainless Steel
440C stainless is a high carbon Martensitic stainless steel. It has a moderate corrosive resistant with good strength. As a Martensitic stainless material can be heat treated to achieve a hardness at or above 60HRC, and develops the highest hardness of all stainless steels. 440C is magnetic in all conditions and has great wear resistance. Material can be cold worked and also responds to heat treat practices.
Common industry/applications are: Bearings & Bushings, Valves, Knives and Cutlery, and Tooling.
Product forms include round bar, square and rectangle bar, and forgings.
Standards
- UNS S44004
- ASTM A276
- AMS 5630/5880
Characteristics
- Good machinability in annealed condition.
- Good corrosion resistance.
- Good wear resistance.
Physical Properties
- Density: 0.289 LB/in³ (8.0g/cm³)
- Melting Point: 2701°F (1483°C)
- Modulus of Elasticity: 29.6x10⁶psi (204 GPa)
- Magnetic Permeability: 1.02 Max @ 200 H (Annealed)
Chemical Composition
C
Mn
S
P
Si
Cr
Ni
N
Mechanical Properties
Mechanical properties are typical and are not required to be reported in the Annealed condition. Typically, 440C is purchased in an annealed condition and then machined prior to heat treating as material can be hardened to 50-60HRC.
KSI (MPa)
KSI (MPa)
HRC (BHN)
Specialty Steel Supply makes all reasonable efforts to ensure the accuracy and correctness of the data found on this website and the associated documents but makes no representations or warranties as to the data’s accuracy, correctness or reliability. All data are for general information only and not for providing design advice. It is the responsibility of the user to test specific alloys under actual service conditions to determine their suitability for a particular purpose.
Stainless and Alloys
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Specialty Steel Supply Inc. is one of the largest distributors of austenitic, precipitation hardened, duplex and martensitic stainless steels. We have a wide range of products and types of stainless steel round bar and our well trained staff offers many years of experience in all aspects of the steel industry. Our ability to procure and source metals from all parts of the world allows us to stay competitive in a global marketplace. We are committed to developing and servicing just in time inventory programs.
Specialty Steel Supply
19201 Circle Lake Drive
Pinehurst, Texas 77362
info@specialtysteelsupply.com
Business Hours
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