17-7PH
الوصف
نطاق توريد مجموعة الطيران:
المطروقات غير القياسية والقضبان المستديرة وألواح الصلب والحلقات والأنابيب غير الملحومة
- 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.
- المكونات الكيميائية
| سبيكة | C | من | و | P | S | كر | في | آل |
| 17-7ph | – | – | – | – | – | 16.0 | 6.50 | 0.75 |
| 0.09 | 1.0 | 1.0 | 0.04 | 0.03 | 18.0 | 7.75 | 1.50 |
- الخصائص الفيزيائية
| الكثافة | 7.65g/cm3 |
| نقطة الانصهار | 1415-1450℃ |
Mechanical properties of 17-7PH alloy at room temperature
| Jubao alloy | قوة الشد Rm نيوتن/مم2 |
قوة الخضوع RP0.2 نيوتن/مم2 |
الاستطالة A5 % |
صلابة برينل إتش بي |
| Solid melting 1000~1100℃ Quick cooling | ≤1030 | ≤380 | ≥20 | ≤229 |
| 565℃ aging | ≥1140 | ≥960 | ≥5 | ≥363 |
| 510℃ aging | ≥1230 | ≥1030 | ≥4 | ≥388 |
- Material properties
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.
- Application areas
Used in aerospace, chemical, petrochemical, papermaking and metal processing industries.
