3mm feuille inoxydable
UN 3mm stainless sheet sits at the boundary between cold rolled and hot rolled production. The correct choice depends on:
- Exigences de finition de surface
- Dimensional tolerance
- Propriétés mécaniques
- Application environment
General recommendation:
- Utiliser cold rolled 3mm stainless sheet for precision and appearance
- Utiliser hot rolled 3mm stainless plate for structural and heavy-duty use
- Description
UN 3mm stainless sheet is a medium-thickness flat-rolled stainless steel product widely used in fabrication, construction, fabrication d'équipement, et applications industrielles.
A cette épaisseur, stainless steel can be produced by both laminage à froid et laminage à chaud, making it an important selection point in engineering and procurement.
Cold Rolled vs Hot Rolled Stainless Steel
The rolling process determines the sheet’s thickness capability, tolérance, état de surface, et propriétés mécaniques.
Tôle d'acier inoxydable laminée à froid
Cold rolling is performed at room temperature after hot rolling, suivi d'un recuit et d'une finition de surface.
Caractéristiques:
- Surface lisse et uniforme (2B, BA finishes)
- High dimensional accuracy and tight tolerances
- Improved strength due to work hardening
- Excellent flatness
Plage d'épaisseur typique:
- 0.3mm – 6 mm
- Most commonly used below 4.5mm
Applications:
- Composants de précision
- Panneaux décoratifs
- Équipements et électroménagers de cuisine
- Medical and food-grade equipment
Hot Rolled Stainless Steel Sheet
Hot rolling is carried out at high temperatures above recrystallization, allowing larger deformation and thicker products.
Caractéristiques:
- Rough surface (Finition n°1, pickled or scaled)
- Lower dimensional accuracy compared to cold rolled
- Better ductility for forming and welding
- Suitable for heavy-duty applications
Plage d'épaisseur typique:
- 3mm – 200mm+
Applications:
- Fabrication structurelle
- Heavy machinery
- Plateformes industrielles
- Pressure vessels and tanks
Thickness and Process Comparison Table
| Process Type | Plage d'épaisseur | Tolérance | Finition de surface | Main Applications |
|---|---|---|---|---|
| Cold Rolled Stainless Sheet | 0.3mm – 6 mm | Haute précision (±0.10mm) | Lisse (2B, BA) | Décoratif, pièces de précision |
| Hot Rolled Stainless Sheet | 3mm – 200mm+ | Précision inférieure (±0.20–0.30mm) | Rugueux (N°1) | De construction, industriel |
Why 3mm is a Critical Thickness
Le 3mm thickness is considered a transition point between cold rolled and hot rolled stainless steel.
Key Reasons:
1. Equipment and Rolling Capability
- Cold rolling requires higher pressure as thickness increases
- Efficient production typically limits cold rolled sheets to ≤6mm
- Hot rolling can easily produce thicker sections from slabs
2. Surface Requirements
- Cold rolled sheets are selected when appearance and smoothness are important
- Hot rolled sheets are used where surface finish is not critical
3. Précision dimensionnelle
- Laminé à froid: tighter tolerances for precision manufacturing
- Laminé à chaud: acceptable variation for structural use
4. Mechanical Behavior
- Cold rolled increases strength and hardness
- Hot rolled improves ductility and weldability
Standard Sizes for 3mm Stainless Sheet
Common Sheet Formats
| Épaisseur | Largeur (mm) | Longueur (mm) | Supply Form |
|---|---|---|---|
| 3.0 mm | 1000 / 1219 / 1500 | 2000 / 2438 / 3000 | Feuille |
| 3.0 mm | 1000 – 2000 | Coil length | Bobine |
Remarques:
- Cold rolled 3mm is usually supplied as precision flat sheets
- Hot rolled 3mm is often supplied as plate or pickled sheet (HRAP)
- Custom sizes are widely available for fabrication
Guide de sélection des candidatures
| Exigence | Recommended Type |
|---|---|
| High surface quality | Laminé à froid |
| Tight tolerance machining | Laminé à froid |
| Soudage structurel | Laminé à chaud |
| Heavy load applications | Laminé à chaud |
| Environnements hygiéniques | Laminé à froid |
