| AISI Type 444 | |
 | |
| Category | Steel |
| Class | Stainless steel |
| Type | Ferritic nonstandard |
| Common Names | Chromium steel |
| Designations | United States: ASTM A176 , SAE 51444 |
| Composition | |
| |
| Element | Weight % |
| C | 0.03 |
| Mn | 1.00 |
| Si | 1.00 |
| Cr | 17.5-19.5 |
| Ni | 1.0 |
| P | 0.04 |
| S | 0.03 |
| Mo | 1.75-2.5 |
| N | 0.035 (max) |
| Ti+Nb | 0.44 (min) |
| Mechanical Properties | |
| |
| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Density (×1000 kg/m3) | 7.8 | 25 | |
| Poisson's Ratio | 0.27-0.30 | 25 | |
| Elastic Modulus (GPa) | 200 | 25 | |
| Tensile Strength (Mpa) | 415 | 25 | annealed (plate, sheet, strip) |
| Yield Strength (Mpa) | 275 | ||
| Elongation (%) | 20 | ||
| Reduction in Area (%) | |||
| Hardness (HRB) | 95 (max) | 25 | annealed (plate, sheet, strip) |
| Thermal Properties | |
| |
| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Thermal Expansion (10-6/ºC) | 10 | 0-100 more | |
| Thermal Conductivity (W/m-K) | 26.8 | 100 | |
| Specific Heat (J/kg-K) | 420 | 0-100 | |
| Electric Properties | |
| |
