- Keterangan
SS316 plate price per kg is generally higher than 304 stainless steel plate because 316 contains additional alloying elements that significantly improve corrosion resistance, especially in marine, kimia, dan lingkungan kaya klorida. Although both are austenitic stainless steels, the raw material cost, persyaratan pemrosesan, and end-use performance of 316 make it a premium grade in many industrial sectors.
What Is SS316 Plate?
SS316 plate is an austenitic stainless steel plate containing chromium, nikel, dan molibdenum. The addition of molybdenum is the key reason why 316 stainless steel performs better than 304 in harsh environments. It offers excellent resistance to pitting corrosion, korosi celah, dan serangan kimia.
316 stainless steel plate is commonly used in marine equipment, Pemrosesan Kimia, pharmaceutical tanks, and food-grade industrial applications where corrosion resistance is critical.
Komposisi Kimia dari 316 Pelat Baja Tahan Karat
The alloy composition directly affects the price difference between 316 Dan 304.
| Elemen | 316 Baja Tahan Karat (%) | 304 Baja Tahan Karat (%) |
|---|---|---|
| Kromium (Kr) | 16.0 – 18.0 | 18.0 – 20.0 |
| Nikel (Di dalam) | 10.0 – 14.0 | 8.0 – 10.5 |
| molibdenum (Mo) | 2.0 – 3.0 | — |
| Karbon (C) | ≤ 0.08 | ≤ 0.08 |
| mangan (M N) | ≤ 2.0 | ≤ 2.0 |
| Besi (Fe) | Keseimbangan | Keseimbangan |
The presence of 2–3% molybdenum makes 316 significantly more expensive because molybdenum is a costly alloying metal.
Why SS316 Plate Price Per Kg Is Higher
1. Molybdenum Increases Raw Material Cost
The most important reason 316 stainless steel costs more is the addition of molybdenum. This element improves corrosion resistance in saltwater and acidic conditions but adds substantial alloy cost.
2. Higher Nickel Content
316 stainless steel usually contains more nickel than 304. Nickel is one of the major cost drivers in stainless steel production, and fluctuations in nickel prices directly affect 316 plate price per kg.
3. Better Corrosion Resistance
316 provides superior resistance to:
- Chloride corrosion
- Pitting corrosion
- Chemical processing environments
- Marine atmosphere
- Coastal structures
This enhanced performance makes 316 suitable for demanding industries where material failure is costly.
4. More Specialized Applications
Karena 316 is used in high-end industrial sectors such as pharmaceuticals, teknik kelautan, and petrochemicals, it is often produced to stricter specifications and surface quality standards, increasing production costs.
Mechanical Properties Comparison
| Milik | 316 Piring | 304 Piring |
|---|---|---|
| Kekuatan Tarik | ≥ 515 MPa | ≥ 515 MPa |
| Kekuatan Hasil | ≥ 205 MPa | ≥ 205 MPa |
| Pemanjangan | ≥ 40% | ≥ 40% |
| Kepadatan | 7.98 gram/cm³ | 7.93 gram/cm³ |
| Ketahanan Korosi | Bagus sekali | Bagus |
Although the mechanical strength is similar, the corrosion resistance of 316 is much better in aggressive environments.
Aplikasi Umum dari 316 Pelat Baja Tahan Karat
Due to its premium alloy composition, 316 plate is widely used in:
- Marine engineering equipment
- Tangki penyimpanan bahan kimia
- Penukar panas
- Mesin farmasi
- Peralatan pengolahan makanan
- Bejana tekan
- Platform lepas pantai
- Medical devices
- Coastal building structures
- Pabrik desalinasi
These applications require materials that can resist corrosion over long service periods.
316 vs 304 Pelat Baja Tahan Karat
| Fitur | 316 Pelat Baja Tahan Karat | 304 Pelat Baja Tahan Karat |
|---|---|---|
| molibdenum | Ya | TIDAK |
| Kandungan Nikel | Lebih tinggi | Standar |
| Ketahanan Korosi | Unggul | Standar |
| Marine Use | Bagus sekali | Terbatas |
| Price Per Kg | Lebih tinggi | Lebih rendah |
| Penggunaan Khas | Kimia / Laut | Industri umum |
Spesifikasi Plat Khas
Common sizes for 316 termasuk pelat baja tahan karat:
| Ketebalan | Lebar | Panjang |
|---|---|---|
| 3 mm – 100 mm | 1000 mm – 2000 mm | 2000 mm – 6000 mm |
Standard finishes include 2B, No.1, BA, and polished surfaces for industrial and decorative applications.
