Plat Gelek Panas Keluli Tahan Karat
Stainless steel hot rolled plates are available in a wide range of grades, termasuk austenit, ferit, martensitik, dupleks, and high-alloy stainless steels. The most commonly used grades are 304, 316L, 430, 410, 420, dan 2205, depending on corrosion resistance, kekuatan, dan keperluan permohonan. Hot rolled plates are widely used in industrial and structural fields where strength and durability are more important than surface finish precision.
- Penerangan
Stainless steel hot rolled plate is produced by rolling stainless steel at high temperatures above the recrystallization point. This process allows the material to be formed in thicker dimensions and provides good mechanical strength, making it widely used in structural, perindustrian, and heavy-duty applications.
Compared with cold rolled sheets, hot rolled stainless steel plates are typically thicker, have a slightly rougher surface finish, and are more suitable for fabrication and engineering use.
Common Grades of Stainless Steel Hot Rolled Plate
Stainless steel hot rolled plates are available in a wide range of grades depending on corrosion resistance, kekuatan, dan keperluan permohonan.
1. Gred Keluli Tahan Karat Austenit
These are the most widely used stainless steels due to excellent corrosion resistance and formability.
| Gred | Ciri-ciri Utama | Aplikasi Biasa |
|---|---|---|
| 201 | Lower nickel, kos efektif, rintangan kakisan sederhana | Bahagian struktur, kegunaan hiasan |
| 304 / 304L | Rintangan kakisan yang sangat baik, versatile | Peralatan makanan, tangki kimia, pembinaan |
| 316 / 316L | Improved chloride resistance with molybdenum | Marin, kimia, offshore equipment |
| 321 | Titanium-stabil, good high-temperature resistance | Penukar haba, sistem ekzos |
2. Gred Keluli Tahan Karat Feritik
Ferritic grades provide good corrosion resistance and are magnetic.
| Gred | Ciri-ciri Utama | Aplikasi Biasa |
|---|---|---|
| 430 | Rintangan kakisan yang baik, kos rendah | Panel hiasan, peralatan |
| 409 | Tahan panas, gred automotif | Sistem ekzos |
| 439 | Kebolehkimpalan yang lebih baik dan rintangan kakisan | Penukar haba, bahagian automotif |
3. Gred Keluli Tahan Karat Martensit
These grades are heat-treatable and known for strength and hardness.
| Gred | Ciri-ciri Utama | Aplikasi Biasa |
|---|---|---|
| 410 | Basic hardenable stainless steel | Bahagian mekanikal, aci |
| 420 | High hardness and wear resistance | Alat pemotong, bilah |
| 431 | High strength and improved corrosion resistance | Marine shafts, bahagian pam |
| 440C | Very high hardness and wear resistance | Bearings, precision tools |
4. Gred Keluli Tahan Karat Dupleks
Duplex stainless steels combine high strength and excellent corrosion resistance.
| Gred | Ciri-ciri Utama | Aplikasi Biasa |
|---|---|---|
| 2205 | Balanced strength and corrosion resistance | Tangki kimia, platform luar pesisir |
| 2507 | Super dupleks, very high corrosion resistance | Seawater systems, minyak & gas |
5. High-Alloy / Special Stainless Grades
These are used in extreme environments requiring superior corrosion resistance.
| Gred | Ciri-ciri Utama | Aplikasi Biasa |
|---|---|---|
| 904L | High nickel and molybdenum content | Strong acid environments |
| 254 KAMI ADA | Excellent pitting resistance | Seawater systems, desalination |
| 1.4529 / Aloi 926 | High corrosion resistance in harsh chemicals | Chemical processing |
Surface Condition of Hot Rolled Stainless Steel Plate
Hot rolled stainless steel plates are typically supplied with:
- No.1 selesai (canai panas, disepuhlindap, pickled surface)
- Rough industrial surface
- Optional cut-to-size or polished surface
- Optional sandblasting or grinding treatment
Common Applications of Stainless Steel Hot Rolled Plate
Stainless steel hot rolled plates are widely used in heavy-duty industries:
- Kapal tekanan
- Tangki simpanan bahan kimia
- Struktur pembinaan kapal
- Industrial machinery frames
- Construction steel structures
- Heat exchanger shells
- Oil and gas equipment
- Mining and heavy equipment components
- Sistem penjanaan kuasa
- Plat sokongan struktur
