17 4 Lembaran Tahan Karat
17-4 kepingan keluli tahan karat is a high-strength precipitation hardening grade that offers a unique balance of mechanical performance and corrosion resistance.
Compared with other stainless steel grades:
- Stronger than 304, 316, dan 430
- Less corrosion-resistant than 316 in harsh marine environments
- More suitable for mechanical and load-bearing applications
It is widely used in industries where strength is more critical than formability or extreme corrosion resistance.
- Penerangan
17-4 kepingan keluli tahan karat (also known as precipitation hardening stainless steel) is a high-strength stainless steel grade widely used in aerospace, kimia, marin, and mechanical engineering applications.
It is characterized by:
- Kekuatan tinggi selepas rawatan haba
- Rintangan kakisan yang baik
- Excellent mechanical stability
- Hardness adjustable through aging treatment
The designation “17-4” refers to its approximate composition:
- ~17% chromium
- ~4% nickel
- Plus copper and other alloying elements
Main Category: Keluli Tahan Karat Pengerasan Kerpasan
17-4 keluli tahan karat kepunyaan precipitation hardening (PH) stainless steel family, which includes other high-performance grades designed for strength and corrosion resistance.
Common PH Stainless Steel Grades
- 15-5 Keluli tahan karat PH
- 17-4 Keluli tahan karat PH
- 13-8 Mo stainless steel
- 17-7 Keluli tahan karat PH
These grades are heat-treatable and designed for applications requiring high strength without losing corrosion resistance.
17-4 Stainless Steel vs Other Stainless Steel Grades
1. Perbandingan dengan 304 Keluli Tahan Karat
| Harta benda | 17-4 Keluli Tahan Karat | 304 Keluli Tahan Karat |
|---|---|---|
| taip | Pengerasan kerpasan | Austenit |
| kekuatan | Sangat tinggi (heat treated) | Sederhana |
| Rintangan kakisan | bagus | sangat bagus (general use) |
| Hardening ability | ya (aging treatment) | Tidak |
| Aplikasi | Aeroangkasa, aci, injap | Makanan, dapur, general use |
Key difference:
17-4 is used when strength is critical, sementara 304 digunakan untuk general corrosion resistance and fabrication ease.
2. Perbandingan dengan 316 Keluli Tahan Karat
| Harta benda | 17-4 Keluli Tahan Karat | 316 Keluli Tahan Karat |
|---|---|---|
| taip | Keluli tahan karat PH | Keluli tahan karat Austenit |
| Rintangan kakisan | bagus | Cemerlang (Gred Marin) |
| kekuatan | Much higher | Sederhana |
| Rintangan klorida | Sederhana | Cemerlang |
| Aplikasi | Bahagian mekanikal, aci | Marin, kimia, perubatan |
Key difference:
316 diutamakan dalam high-corrosion environments, sementara 17-4 is chosen for load-bearing mechanical parts.
3. Perbandingan dengan 430 Keluli Tahan Karat
| Harta benda | 17-4 Keluli Tahan Karat | 430 Keluli Tahan Karat |
|---|---|---|
| taip | Pengerasan kerpasan | Feritik |
| kekuatan | Sangat tinggi | Low–medium |
| Rintangan kakisan | bagus | Sederhana |
| Kemagnetan | Magnet | Magnet |
| Aplikasi | High-performance engineering | Perkakas, hiasan |
Key difference:
17-4 ialah a high-performance engineering material, sementara 430 ialah a cost-effective decorative grade.
4. Perbandingan dengan 17-7 Keluli Tahan Karat PH
| Harta benda | 17-4 Keluli Tahan Karat | 17-7 Keluli Tahan Karat PH |
|---|---|---|
| kekuatan | Lebih tinggi | tinggi |
| Rintangan kakisan | bagus | bagus |
| Kebolehbaburan | Sederhana | lebih baik |
| Rawatan haba | Aging hardened | Controlled transformation |
| Aplikasi | Bahagian struktur, aci | Mata air, komponen fleksibel |
Key difference:
17-7 is better for spring and flexible applications, sementara 17-4 is better for structural strength applications.
Kelebihan Utama 17-4 Lembaran Keluli Tahan Karat
- Very high mechanical strength after heat treatment
- Good corrosion resistance in industrial environments
- Stable dimensional performance under load
- Suitable for precision machining and engineering parts
- Can be supplied in solution-treated or aged conditions
Aplikasi Biasa
- Komponen aeroangkasa
- Pump shafts and valve parts
- Peralatan pemprosesan kimia
- Marine engineering components
- Mechanical fasteners and structural parts
