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17-4PH Stainless Steel Plate Complete Guide: 열처리, 기계적 성질 & 산업용 애플리케이션
17-4PH stainless steel plate (또한 ~으로 알려진 미국 S17400 / 630 스테인레스 스틸) 는 precipitation-hardening martensitic stainless steel widely used in applications requiring a combination of 고강도, 좋은 내식성, and dimensional stability.
그것은에서 일반적으로 사용됩니다 defense systems, nuclear components, aerospace structures, 화학 장비, and high-load mechanical parts.
1. What is 17-4PH Stainless Steel?
| 재산 | 설명 |
|---|---|
| Steel type | Precipitation-hardening stainless steel |
| UNS designation | S17400 |
| Equivalent grade | 630 스테인레스 스틸 |
| Main alloying elements | Cr, ~ 안에, 구리 |
The strengthening mechanism is based on precipitation hardening (노화 과정), which allows very high mechanical strength after heat treatment.
2. 솔루션 처리 + Aging Process
17-4PH performance is controlled by two key steps: solution treatment and aging.
- 솔루션 처리: dissolves alloying elements into a uniform structure
- Aging treatment: precipitates strengthening phases to increase strength
| 상태 | Mechanical Behavior |
|---|---|
| Solution treated | 부드러운, 좋은 가공성 |
| H900 | Maximum strength condition |
| H1025 | 균형 잡힌 강도와 인성 |
| 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
| 상태 | Strength Level |
|---|---|
| Solution treated | 낮은 |
| H900 | 매우 높음 |
| H1025 | 높은 (balanced) |
| H1150 | 보통의 (toughness optimized) |
4. 17-4PH vs 630 스테인레스 스틸
17-4PH and 630 stainless steel refer to the same material system, with different naming conventions used across industries.
| Designation | Usage Context |
|---|---|
| 17-4PH | Common industrial / aerospace naming |
| 630 (미국 S17400) | Standardized metallurgical designation |
5. 일반적인 응용 분야
| 산업 | Application Examples |
|---|---|
| 항공 우주 | 구조적 구성 요소, support brackets |
| Defense | High-strength mechanical assemblies |
| Nuclear industry | Critical load-bearing components |
| 산업기계 | 샤프트, gears, high-load parts |
6. 처리 고려사항
- 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. 테다강화(Teda Ganghua) 스테인레스 스틸 공급 능력
~에 테다강화, we supply high-quality 17-4PH stainless steel plates (630 등급) with stable precipitation-hardening performance. Our materials are widely used in aerospace, nuclear engineering, and high-strength industrial systems.
We provide precision cutting, heat-treatment coordination, and customized fabrication services to meet strict engineering requirements for global customers.
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결론
17-4PH stainless steel plate is one of the most important precipitation-hardening alloys in modern engineering. With excellent strength, 좋은 내식성, and controllable heat treatment states, it is widely used in aerospace, nuclear, and high-performance industrial applications.
