17-7PH
Descripción
Alcance del suministro de Aviation Group:
Piezas forjadas no normalizadas, varillas redondas, chapas de acero, anillos, tubos sin soldadura
- 17-7PH material introduction
17-7PH is an austenite-martensite precipitation hardened stainless steel developed based on 18-8CrNi, also known as controlled phase change stainless steel.
- Ingredientes químicos
| aleación | C | Mn | Y | P | S | Cr | En | Al |
| 17-7ph | – | – | – | – | – | 16.0 | 6.50 | 0.75 |
| 0.09 | 1.0 | 1.0 | 0.04 | 0.03 | 18.0 | 7.75 | 1.50 |
- Propiedades físicas
| densidad | 7,65 g/cm3 |
| Punto de fusión | 1415-1450℃ |
Mechanical properties of 17-7PH aleación a temperatura ambiente
| Aleación de Jubao | Resistencia a la tracción Rm N/mm2 |
Límite elástico RP0,2N/mm2 |
Alargamiento A5 % |
Dureza Brinell HB |
| Fusión sólida 1000~1100℃ Enfriamiento rápido | ≤1030 | ≤380 | ≥20 | ≤229 |
| 565℃ envejecimiento | ≥1140 | ≥960 | ≥5 | ≥363 |
| 510℃ envejecimiento | ≥1230 | ≥1030 | ≥4 | ≥388 |
- Propiedades de los materiales
17-7PH is a hardened stainless steel with high strength and hardness, fatigue resistance, good corrosion resistance and die forging. After solid solution treatment, it is an unstable austenite structure with good plastic toughness and processability. After adjustment, the austenite precipitation of carbide phenol composition changes. After martensite transformation treatment, most of the structures are transformed into low-carbon tempered martensite with good toughness. This state is the use state of steel and has good medium-temperature mechanical properties. Corrosion resistance is better than general martensitic stainless steel.
- Ámbitos de aplicación
Se utiliza en las industrias aeroespacial, química, petroquímica, papelera y de transformación de metales.
