Type 410HT (UNSS41000/2.4660)
- Minimum of 11.5% of chromium, sufficient for moderate corrosion resistance.
- Usable in mild atmospheres and chemical environments.
- Readily welded using different methods.
- It can be hot worked or cold worked.
Description
Type 410HT stainless steel is martensitic steel with low chromium content. It can be readily welded using the most commonly known standard methods.
Due to its low chromium content, type 410HT is resistant to corrosion in mild atmospheres, steam, and mild chemical environments. It can be hot worked, cold-formed, and annealed, making it general-purpose stainless steel.
When welded, it is recommended to preheat the part at 350-400oF, to reduce the risk of cracking.
Common Names: Stainless steel type 410HT is commonly known as Chromium steel.
Executive Standards/Grades:
- JIS: SUS 410HT
- ASTM: A276
- DIN: 2.4660
- UNS: S41000
- EN: FeMi35Cr20Cu4Mo2
- SUS: SUS410HT
Chemical Properties:
Type 410HT stainless steel has the following chemical composition:
- Carbon – 0.15% max
- Manganese – 1.00% max
- Chromium – 11.5% – 13.5%
- Nickel – 0.50% max
- Sulphur – 0.03% max
- Phosphorus – 0.04% max
- Silicon – 1.00% max
Mechanical Properties:
- Hardness (HRB) – 96 (maximum)
- Elongation (%) – 20
- Yield Strength (Mpa) – 205
- Tensile Strength Min (Mpa) – 450
Physical Properties:
- Density (lbm/in3) – 0.280 at 68oF
- Elastic Modulus (psi x 106) – 29
- Thermal Conductivity (Btu/ft hr ⁰ F) – 14.4 at 212oF
- Specific Heat (Btu/lb./°F) – 0.11 at 68°F to 212°F
- Electrical Resistivity – 56 at 68°F
- Melting range: 2700 – 2790 ⁰ F
Key Features:
- Basic, heat-treated version of Type 410, suitable for general purpose use
- Martensitic stainless steel type, used in environments where corrosion is not severe
- Corrosion resistance in mild atmospheres, steam, and mild chemical environments, due to a minimum of 11.5% chromium
- Ideal for applications requiring moderate corrosion resistance and high mechanical properties
- Good exposure to everyday activities when properly cleaned
- Excellent weldability by all standard methods
- Not recommended to be worked below 1650oF
Forms Available:
Stainless steel type 410HT is available in different forms such as:
- Sheet
- Sheet coil
- Tube
- Plate
- Bar
Applications:
Because of its properties, stainless steel type 410HT has a wide range of applications including:
- Kitchen utensils and cutlery
- Dental and surgical instruments
- Steam and gas turbines blades
- Bolts, nuts, screws
- Pump and valve parts and shafts
- Mine ladder rugs
- Nozzles
Possible Alternatives Grades:
Type 410HT stainless steel has some possible alternatives that can be used. Such as:
- 416 – Acceptable lower corrosion resistance, requires high machinability.
- 420 – Higher hardened strength or hardness.
- 440C – Even higher hardened strength or hardness than 420.
FAQs:
- How corrosion resistant is stainless steel type 410HT?
Type 410HT stainless steel withstands moderate corrosion in mild atmospheres, steam, and mild chemical environments.
- Can type 410HT be easily welded?
Type 410HT is readily welded by most commonly known standard methods. To maintain maximum ductility, post-weld annealing is recommended.
- How does type 410HT behave to heat treatment?
Type 410HT stainless steel can be easily hot worked within the range of 2000-2200oF, but it is not recommended to work it below 1650oF.
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