- Descrizione
17-4PH Stainless Steel Plate Complete Guide: Trattamento termico, Proprietà meccaniche & Applicazioni industriali
17-4PH stainless steel plate (noto anche come Stati Uniti S17400 / 630 acciaio inossidabile) è un precipitation-hardening martensitic stainless steel widely used in applications requiring a combination of alta resistenza, buona resistenza alla corrosione, and dimensional stability.
È comunemente usato in defense systems, nuclear components, aerospace structures, attrezzature chimiche, and high-load mechanical parts.
1. What is 17-4PH Stainless Steel?
| Proprietà | Descrizione |
|---|---|
| Steel type | Precipitation-hardening stainless steel |
| UNS designation | S17400 |
| Equivalent grade | 630 acciaio inossidabile |
| Main alloying elements | Cr, In, Cu |
The strengthening mechanism is based on precipitation hardening (aging process), which allows very high mechanical strength after heat treatment.
2. Trattamento risolutivo + Aging Process
17-4PH performance is controlled by two key steps: solution treatment and aging.
- Trattamento risolutivo: dissolves alloying elements into a uniform structure
- Aging treatment: precipitates strengthening phases to increase strength
| Condizione | Mechanical Behavior |
|---|---|
| Solution treated | Morbido, good machinability |
| H900 | Maximum strength condition |
| H1025 | Forza e tenacità bilanciate |
| H1150 | Higher toughness, reduced hardness |
3. Panoramica delle proprietà meccaniche
- Very high tensile strength after aging
- Good corrosion resistance in moderate environments
- Excellent dimensional stability after heat treatment
- Good fatigue resistance for cyclic loading
| Condizione | Strength Level |
|---|---|
| Solution treated | Basso |
| H900 | Molto alto |
| H1025 | Alto (balanced) |
| H1150 | Moderare (toughness optimized) |
4. 17-4PH vs 630 Acciaio inossidabile
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 (Stati Uniti S17400) | Standardized metallurgical designation |
5. Applicazioni tipiche
| Industria | Esempi di applicazione |
|---|---|
| Aerospaziale | Componenti strutturali, support brackets |
| Defense | High-strength mechanical assemblies |
| Nuclear industry | Critical load-bearing components |
| Macchinari industriali | Alberi, gears, high-load parts |
6. Considerazioni sull'elaborazione
- 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. Capacità di fornitura di acciaio inossidabile Teda Ganghua
A Teda Ganghua, we supply high-quality 17-4PH stainless steel plates (630 grado) with stable precipitation-hardening performance. Our materials are widely used in aerospace, nuclear engineering, and high-strength industrial systems.
We provide precision cutting, coordinamento del trattamento termico, and customized fabrication services to meet strict engineering requirements for global customers.
Esplora i nostri prodotti in acciaio inossidabile qui:
Prodotti in lamiera di acciaio inossidabile
Conclusione
17-4PH stainless steel plate is one of the most important precipitation-hardening alloys in modern engineering. With excellent strength, buona resistenza alla corrosione, and controllable heat treatment states, it is widely used in aerospace, nuclear, and high-performance industrial applications.
