Heat Treating 440c Ss Steel Sheet Hardness 45HRC Corrosion Resistance
Heat Treating 440c Stainless Steel Sheet HardnessSUS 440c Stainless Steel Corrosion Resistance
Type 440C is a martensitic stainless steel with high carbon and chromium content. After heat treatment, it is capable of attaining the highest strength, hardness and wear resistance of all stainless alloys. Compared to austenitic grades, 440C has moderate corrosion resistance, comparable to 304. This grade of stainless steel plate can be hardened through heat treatment, but machining is preferable in the annealed condition and becomes extremely difficult once hardened.
Highest resistance can be achieved through hardening and polishing, and the properties of 440C steel make it ideal for knife blades and cutting instruments like surgical blades. This grade, once hardened, hold a sharp edge and resists corrosion, and can be polished to a near mirror finish. Its toughness and ability to resist wear makes 440C stainless steel a good choice for tools like chisels and ball bearings.
pecifications
- UNS S44004
- AMS 5630 Chem Only
- ASTM: A480
Features
- Hardenable chromium steel
- High strength
- High wear resistance
Inventory Size Range
Please contact us for more details.
The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.
440C Chemical Composition
| Element | Percent By Weight |
| C | Carbon | 1.20 |
| Cr | Chromium | 18.0 |
| Mn | Manganese | 1.00 |
| Mo | Molybdenum | 0.75 |
| P | Phosphorous | 0.04 |
| Si | Silicon | 1.00 |
| S | Sulfur | 0.30 |
Percent maximum unless a range is specified
Common Applications of 440C Stainless Steel Plate include:
- Cutting Instruments
- Knife Blades
- Surgical Instruments
- Chisels
- Measuring instruments
- Ball Bearings and Valves
| PHYSICAL PROPERTIES | |
| Density kg/mᶟ | 7650 |
| Thermal Conductivity at 212°F (100°C) | 24.2 |
| Thermal Conductivity at 932°F (500°C) | - |
| Electrical Resistivity | 600 |
| Elastic Modulus (Gpa) | 200 |
| MECHANICAL PROPERTIES | ANNEALED |
| Yield Strength 0.2% Proof (Mpa) | 448 |
| Tensile Strength (Mpa) | 75 |
| Elongation (% in 50mm) | 14 |
| Hardness (HB) | 269 max |
