Fiche technique complète: 1050 Cercle en aluminium

1. Material Definition & Normes

Le 1050 aluminum circle is a round blank manufactured by stamping or shearing from 1050 aluminum sheet or coil. This grade belongs to the 1xxx series of industrial pure aluminum as per standards like GB/T 3880, with a minimum aluminum content of 99.5%. Due to its high purity, this material exhibits exceptional plastic formability and excellent corrosion resistance, making it a primary choice for complex forming processes such as deep drawing and spinning.

2. Composition chimique de base & Caractéristiques métallurgiques

Its primary chemical composition is Aluminum (Al) ≥ 99.5%, with strictly controlled impurities: Fer (Fe) ≤ 0.40%, Silicium (Et) ≤ 0.25%, and other trace elements (Cu, Mn, Mg, Zn each ≤ 0.05%). This high-purity composition results in the following metallurgical traits:

• High Plasticity: A pure crystalline structure with low resistance to dislocation movement allows for severe cold deformation without cracking.
• Excellent Thermal & Conductivité électrique: Second only to higher purity grades like 1060/1070, with a thermal conductivity of 222 Avec(m·K), making it ideal for heat transfer applications.
• Superior Anodizing Response: Homogeneous composition facilitates the formation of a uniform, dense, and easily colorable anodic oxide layer.

3. Physique & Propriétés mécaniques

• Propriétés physiques: Densité: 2.71 g/cm³, Point de fusion: ~660°C, Conductivité électrique: ~61% IACS.
• Propriétés mécaniques (Temper Dependent):
  • Tempérament O (Recuit): Faible limite d'élasticité, allongement le plus élevé (typically ≥ 30%), representing the optimal condition for deep drawing operations.
  • Temper H14 (Moitié dur): Trempé sous contrainte, offering higher strength (Tensile Strength ~100-130 MPa) and moderate formability, suitable for shallow-formed parts requiring some rigidity.

4. Analysis of Primary Application Fields

Its applications are logically derived from its core properties:

• Fabrication d'ustensiles de cuisine (Primary Application): Leverages its conductivité thermique élevéeet aptitude à l'emboutissage en profondeur supérieure​ for producing pot bodies, pots intérieurs d'autocuiseur, et pots intérieurs du cuiseur à riz. After anodizing or coating with non-stick composites, it meets requirements for safety, durabilité, and cooking efficiency.
• Éclairage & Réflecteurs: Benefits from its haute réflectivitéet excellent anodizing response, making it widely used for LED lamp covers, reflector housings, and luminaire shells. Surface treatment can achieve reflectivity over 80%.
• Traffic Signs & Plates: Utilizes its good atmospheric corrosion resistance, adequate strength, et ease of sheet metal fabrication, making it an ideal substrate for traffic signs and road plates.
• Électronique & Matériel général: Commonly used for heat sinks, capacitor cases, and other stamped parts requiring electrical/thermal conductivity or specific forming characteristics.

5. Selection Advantages & Analyse comparative

Compared to other common aluminum circle grades, 1050 offers the best balance between performance and cost:

6. Key Quality Control Parameters

Professional procurement and incoming inspection should focus on:

• Tolérances dimensionnelles: Tolérance d'épaisseur (par ex., ±0,05 mm), Tolérance de diamètre.
• Propriétés mécaniques: Élongation​ is the key indicator for predicting deep drawability; O temper material should typically be ≥ 30%.
• Formability Indicators: Earing Value; a lower value indicates less edge waviness after drawing, signifying lower material anisotropy.
• Microstructure & Surface: Uniformité de la taille des grains; surface must be free of scratches, marques de rouleau, et des taches d'huile.
• Normes applicables: ASTMB209, DANS 485-2, GB/T 3880.1, etc..

7. Selection Guide Summary

Le 1050 aluminum circle has established dominance in industries like cookware, éclairage, and signage due to its unmatched deep drawability, excellente conductivité thermique/électrique, superb surface treatment potential, and significant cost-effectiveness. For material selection:

• Pour extreme deep drawing or spinning operations, Tempérament O​ 1050 aluminum circle is the primary choice.
• For parts requiring some structural rigidity​ with shallow forming, Temper H14 or H24​ can be selected.
• For cookware requiring high-temperature brazing, its melting point limitation must be considered, ensuring compatibility with coatings or composite bases.

Amidst trends towards lightweight manufacturing and the green circular economy, 1050 cercle en aluminium, as a high-performance, fully recyclable engineering material, continues to have broad application prospects.