Nitronic 40
Material Data Sheet
Nitronic 40 Stainless Steel is a nitrogen strengthened austenitic stainless steel
with great versatility, combining high yield strength with good corrosion resistance. Room temperature
yield strength is about twice that of Types 304, 321, and 347. Nitronic® 40 provides remarkably good
elevated temperature properties and also retains its high strength and toughness at cryogenic temperatures.
It has good high-temperature oxidation resistance in air and resists stress corrosion cracking in severe marine
environments at ambient temperature. Its austenite is so stable that it remains essentially non-magnetic at
cryogenic temperatures or after up to 60% cold work.
Chemical Composition
| Element | Content (%) |
|---|---|
| Iron, Fe | 59.52 – 67.35 |
| Chromium, Cr | 19.0 – 21.5 |
| Manganese, Mn | 8.0 – 10.0 |
| Nickel, Ni | 5.5 – 7.5 |
| Silicon, Si | ≤ 1.0 |
| Nitrogen, N | 0.15 – 0.40 |
| Carbon, C | ≤ 0.08 |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.83 g/cc | 0.283 lb/in³ |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 185 | 185 |
| Tensile Strength, Ultimate | ≥ 620 MPa | ≥ 89900 psi |
| Tensile Strength, Yield | ≥ 330 MPa | ≥ 47900 psi |
| Elongation at Break | 35% | 35% |
Applications
Nitronic 40 is used in the following application areas:
- Aircraft components
- Ducting, bellows systems, clamps, fasteners, flanges
- Pollution control and chemical processing
- Cryogenic service
- Nuclear industry
