wilsonpipeline Stainless inventory includes Alloy 405 (UNS S40500) in Stainless Steel Pipes. Other product forms such as Stainless Steel Flanges, Stainless Steel Pipe Fittings.
Overview
General Properties
Alloy 405 is a 12% chromium stainless steel designed to be used in the as-welded condition. Unlike the other grades of 12% chromium stainless, 405 is not vulnerable to extensive hardening through air cooling from high temperatures.
Specifications: UNS S40500
Applications:
Applications that frequently use alloy 405 include, but are not limited to:
- Steam nozzles
- Partitions
- Annealing boxes
- Quenching racks
- Fabrications that cannot be annealed after welding
Standards:
- ASTM/ASME: UNS S40500
- EURONORM: FeMi35Cr20Cu4Mo2
- DIN: 2.4660
Resistance
Corrosion Resistance
- Same corrosion resistance of Type 410 Steel
- Used in situations where more weldability is desired than Type 410
Processing
Machinability
- Type 405 can be easily machined due to its soft and ductile characteristics
Weldability
- Can be welded using shielded fusion and resistance techniques
- Oxyacetylene is not recommended
- Post weld annealing will maximize ductility
Properties
Chemical Properties:
| C | Cr | Fe | Mn | Si | S | P | Ni | Al | |
|---|---|---|---|---|---|---|---|---|---|
| 405 | 0.08 max | min: 11.5 | balance | 1.0 | 1.0 max | 0.03 max | 0.04 | 0.50 | min: 0.1 |
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 |
|---|---|---|---|---|---|
| 405 | 60 | 25 | 20 | 179 | 88 |
Physical Properties:
| Denstiy lbm/in3 | Coefficient of Thermal Expansion (min/in)-°F | Thermal Conductivity BTU/hr-ft-°F | Specific Heat BTU/lbm -°F | Modules of Elasticity (annealed)2-psi | |
|---|---|---|---|---|---|
| at 68 °F | at 68 – 212°F | at 68 – 1832°F | at 200°F | at 32 – 212°F | in tension (E) |
| 0.279 | 9.2 | 20.5 | 416 | 0.11 | 28 x 106 |
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