wilsonpipeline Stainless inventory includes Alloy 410 HT (UNS S41000) in Stainless Steel Pipes. Other product forms such as Stainless Steel Flanges, Stainless Steel Pipe Fittings.
Overview
General Properties
Alloy 410 HT is the basic, general purpose, heat treated version of Type 410. It is a martensitic type, used for general purpose, where corrosion is not severe. Alloy 410 contains a minimum of 11.5% chromium which is just sufficient enough to demonstrate corrosion resistance properties in mild atmospheres, steam, and many mild chemical environments. .
Specifications: UNS S30400 / S30403
Applications:
Applications requiring moderate corrosion resistance and high mechanical properties are ideal for Alloy 410HT. Examples of applications that frequently used Alloy 410HT include:
- Cutlery
- Steam and gas turbine blades
- Kitchen utensils
- Bolts, nuts, screws
- Pump and valve parts and shafts
- Mine ladder rugs
- Dental and surgical instruments
- Nozzles
- Hardened steel balls and seats for oil well pumps
Standards:
- ASTM/ASME: UNS S41000
- EURONORM: FeMi35Cr20Cu4Mo2
- DIN: 2.4660
Resistance
Corrosion Resistance:
- Good corrosion resistance to atmospheric corrosion, potable water, and to mildly corrosive environments
- Its exposure to everyday activities (sports, food preparation) is generally satisfactory when proper cleaning is performed after exposure to use
- Good corrosion resistance to low concentrations of mild organic and mineral acids
Processing
Welding Characteristics
- Readily welded by all standard methods
- To reduce the risk of cracking, it is suggested to pre-heat the work piece to 350 to 400oF (177 to 204oC)
- Post weld annealing is recommended to retain maximum ductility
Heat Treatment
- The proper hot work range is 2000 to 2200oF (1093 to 1204oC)
- Do not work this material below 1650oF (899oC)
Properties
Chemical Properties:
| C | Mn | Si | P | S | Cr | Ni | |
|---|---|---|---|---|---|---|---|
| 410HT | 0.15 max | 1.00 max | 1.00 max | 0.04 max | 0.03 max | min: 11.5 max: 13.5 | 0.50 max |
Mechanical Properties:
| Grade | Tensile Strength ksi (MPa) min | Yield Strength 0.2% offset ksi (MPa) min | Elongation (% in 50mm) min | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
|---|---|---|---|---|---|
| 410HT | 65 (450) | 30 (205) | 20 | 217 | 96 |
Mechanical Properties of Heat Treated 410:
| Heat Treatment | T410 (0.14%C) Hardened 1800°F (982°C) | ||
|---|---|---|---|
| Rockwell Hardness | 0.2% YS, Ksi (MPa) | UTS, Ksi (MPa) | |
| Annealed* | 81 HRB | 45.4 (313) | 80.4 (554) |
| Hardened & Tempered 400°F (204°C) | 43 HRC | 156.1 (1076) | 202.9 (1399) |
| Hardened & Tempered 550°F (288°C) | 40 HRC | 148.3 (1022) | 187.0 (1289) |
| Hardened & Tempered 600°F (316°C) | 40 HRC | 148.8 (1026) | 186.1 (1283) |
| Hardened & Tempered 800°F (427°C) | 41 HRC | 132.9 (916) | 188.5 (1300) |
| Hardened & Tempered 900°F (482°C) | 41 HRC | 122.6 (845) | 154.3 (1063) |
| Hardened & Tempered 1000°F (538°C) | 35 HRC | 127.9 (882) | 154.3 (1063) |
| Hardened & Tempered 1200°F (649°C) | 98 HRB | 85.5 (589) | 111.2 (767) |
Physical Properties:
| Density lbm/in3 | Thermal Conductivity (BTU/h ft. °F) | Electrical Resistivity (in x 10-6) | Modulus of Elasticity (psi x 106 | Coefficient of Thermal Expansion (in/in)/ °F x 10-6 | Specific Heat (BTU/lb/ °F) | Melting Range (°F) |
|---|---|---|---|---|---|---|
| at 68°F: 0.276 | 14.4 at 212°F | 56 at 68°F | 29 | 5.90 at 68 – 392°F | 0.11 at 68°F to 212°F | 2700 to 2790 |
| 6.5 at 68 – 1112°F |
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