- وصف
17-4PH Stainless Steel Plate Complete Guide: المعالجة الحرارية, الخواص الميكانيكية & التطبيقات الصناعية
17-4PH stainless steel plate (المعروف أيضا باسم UNS S17400 / 630 الفولاذ المقاوم للصدأ) هو أ precipitation-hardening martensitic stainless steel widely used in applications requiring a combination of قوة عالية, مقاومة جيدة للتآكل, and dimensional stability.
يتم استخدامه بشكل شائع في defense systems, nuclear components, aerospace structures, المعدات الكيميائية, and high-load mechanical parts.
1. What is 17-4PH Stainless Steel?
| ملكية | وصف |
|---|---|
| نوع الصلب | Precipitation-hardening stainless steel |
| UNS designation | S17400 |
| Equivalent grade | 630 الفولاذ المقاوم للصدأ |
| Main alloying elements | كر, في, النحاس |
The strengthening mechanism is based on تصلب هطول الأمطار (aging process), which allows very high mechanical strength after heat treatment.
2. علاج الحل + Aging Process
17-4PH performance is controlled by two key steps: solution treatment and aging.
- علاج الحل: dissolves alloying elements into a uniform structure
- Aging treatment: precipitates strengthening phases to increase strength
| حالة | Mechanical Behavior |
|---|---|
| Solution treated | Soft, good machinability |
| H900 | Maximum strength condition |
| H1025 | القوة والمتانة المتوازنة |
| H1150 | Higher toughness, reduced hardness |
3. Mechanical Properties Overview
- Very high tensile strength after aging
- Good corrosion resistance in moderate environments
- Excellent dimensional stability after heat treatment
- Good fatigue resistance for cyclic loading
| حالة | Strength Level |
|---|---|
| Solution treated | قليل |
| H900 | عالية جدا |
| H1025 | عالي (balanced) |
| H1150 | معتدل (toughness optimized) |
4. 17-4PH vs 630 الفولاذ المقاوم للصدأ
17-4PH and 630 stainless steel refer to the same material system, with different naming conventions used across industries.
| تعيين | Usage Context |
|---|---|
| 17-4الرقم الهيدروجيني | Common industrial / aerospace naming |
| 630 (UNS S17400) | Standardized metallurgical designation |
5. التطبيقات النموذجية
| صناعة | أمثلة التطبيق |
|---|---|
| الفضاء | المكونات الهيكلية, support brackets |
| Defense | High-strength mechanical assemblies |
| Nuclear industry | Critical load-bearing components |
| الآلات الصناعية | مهاوي, gears, high-load parts |
6. Processing Considerations
- Machining is easier in solution-treated condition
- Aging should be performed after final shaping
- Heat treatment must be tightly controlled for consistency
- Welding requires careful procedure control
7. قدرة توريد الفولاذ المقاوم للصدأ Teda Ganghua
في تيدا جانجوا, we supply high-quality 17-4PH stainless steel plates (630 درجة) with stable precipitation-hardening performance. Our materials are widely used in aerospace, nuclear engineering, and high-strength industrial systems.
نحن نقدم القطع الدقيق, heat-treatment coordination, and customized fabrication services to meet strict engineering requirements for global customers.
استكشف منتجاتنا من الفولاذ المقاوم للصدأ هنا:
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خاتمة
17-4PH stainless steel plate is one of the most important precipitation-hardening alloys in modern engineering. With excellent strength, مقاومة جيدة للتآكل, and controllable heat treatment states, it is widely used in aerospace, nuclear, and high-performance industrial applications.
