SS 321 Plattenlieferanten
SS 321 plate is a heat-resistant austenitic stainless steel with titanium stabilization, offering excellent resistance to intergranular corrosion and oxidation at high temperatures. Its mechanical properties and chemical composition make it suitable for aerospace, Wärmetauscher, Druckbehälter, and petrochemical equipment. For projects involving high-temperature welded service, SS 321 remains a reliable stainless steel plate choice.
- Beschreibung
SS 321 plate is a titanium-stabilized austenitic stainless steel plate designed for applications requiring excellent resistance to high temperatures and intergranular corrosion. It is widely used in industries such as aerospace, petrochemical processing, Wärmetauscher, and pressure vessels. Im Vergleich zum Standard 304 Edelstahl, SS 321 offers improved stability at elevated temperatures because of its titanium addition.
What Is SS 321 Platte?
SS 321 plate is an austenitic chromium-nickel stainless steel with titanium added as a stabilizing element. The titanium combines with carbon to prevent chromium carbide precipitation during welding or prolonged exposure to temperatures between 427°C and 816°C. Das macht 321 stainless steel suitable for welded components operating in high-temperature environments.
The material has good formability, ausgezeichnete Schweißbarkeit, and strong oxidation resistance. It is commonly supplied in annealed plate form for fabrication and industrial processing.
Chemische Zusammensetzung von SS 321 Platte
The chemical composition of SS 321 plate provides excellent heat resistance and corrosion performance.
| Element | Inhalt (%) |
|---|---|
| Kohlenstoff (C) | ≤ 0.08 |
| Chrom (Cr) | 17.0 – 19.0 |
| Nickel (In) | 9.0 – 12.0 |
| Mangan (Mn) | ≤ 2.00 |
| Silizium (Und) | ≤ 0.75 |
| Phosphor (P) | ≤ 0.045 |
| Schwefel (S) | ≤ 0.03 |
| Titan (Von) | 5×C min – 0.70 |
| Eisen (Fe) | Gleichgewicht |
Titanium stabilization is the key feature that distinguishes SS 321 from 304 Edelstahl.
Mechanische Eigenschaften von SS 321 Platte
SS 321 plate combines good strength with excellent high-temperature stability.
| Eigentum | Typischer Wert |
|---|---|
| Zugfestigkeit | ≥ 515 MPa |
| Streckgrenze | ≥ 205 MPa |
| Verlängerung | ≥ 40% |
| Härte | ≤ 217 HB |
| Dichte | 7.93 g/cm³ |
| Melting Range | 1398 – 1454°C |
The material maintains good mechanical performance at both ambient and elevated temperatures.
Main Performance Characteristics
Hohe Temperaturbeständigkeit
SS 321 plate is specifically developed for service in elevated temperature conditions. It performs well in continuous exposure up to approximately 870°C.
Interkristalline Korrosionsbeständigkeit
The titanium content prevents carbide precipitation after welding, reducing the risk of intergranular corrosion in heat-affected zones.
Hervorragende Schweißbarkeit
SS 321 can be welded using standard stainless steel welding processes without requiring post-weld annealing in many applications.
Oxidationsbeständigkeit
The chromium-rich composition provides good oxidation resistance in high-temperature atmospheres.
Häufige Anwendungen von SS 321 Platte
SS 321 stainless steel plate is commonly used in industrial sectors requiring heat resistance and long-term durability.
- Abgassysteme für Flugzeuge
- Komponenten für Strahltriebwerke
- Wärmetauscher
- Boiler casings
- Druckbehälter
- Ausrüstung für die chemische Verarbeitung
- Ofenteile
- Dehnungsfugen
- Hochtemperatur-Pipelines
- Petrochemical refinery equipment
The material is widely selected for fabricated components exposed to thermal cycling.
SS 321 Plate vs 304 Edelstahl
| Besonderheit | SS 321 Platte | 304 Edelstahl |
|---|---|---|
| Struktur | Austenitisch | Austenitisch |
| Titanium Stabilized | Ja | NEIN |
| Hitzebeständigkeit | Höher | Standard |
| Welded High-Temp Service | Exzellent | Mäßig |
| Korrosionsbeständigkeit | Hoch | Hoch |
| Typische Verwendung | High-temp equipment | Allgemeine industrielle Verwendung |
SS 321 is preferred when welded components must operate continuously at elevated temperatures.
Typical Plate Specifications
Common available dimensions for SS 321 stainless steel plate include:
| Dicke | Breite | Länge |
|---|---|---|
| 3 mm – 50 mm | 1000 mm – 2000 mm | 2000 mm – 6000 mm |
The plate can also be processed by cutting, Polieren, Biegen, and custom fabrication for industrial applications.
