アルミニウム is one of the most widely used engineering metals in the world, largely due to its abundance, 軽量性, 耐食性, および汎用性. As the most abundant metallic element in the Earth’s crust, aluminum serves industries ranging from electrical and construction to aerospace, 食品加工, and renewable energy.
By alloying aluminum with controlled amounts of other elements, manufacturers can tailor its mechanical, 物理的な, and chemical properties for specific applications. These alloys are categorized into series and grades, each designed to balance strength, 成形性, 導電率, 耐食性.
Among these, 1050 アルミニウム合金 stands out as a commercially pure aluminum grade. With exceptionally high aluminum content, it prioritizes conductivity, 延性, and corrosion resistance over mechanical strength. This article provides a comprehensive technical overview of aluminum 1050, その構成を含む, プロパティ, fabrication behavior, および産業用途.
とは何ですか 1050 アルミニウム合金?
1050 aluminum alloy belongs to the 1xxx series, which represents commercially pure aluminum alloys containing a minimum of 99.0% アルミニウム. 具体的には, 1050 aluminum contains at least 99.5% アルミニウム, making it one of the purest grades used in industrial manufacturing.
It is classified as a non-heat-treatable alloy, meaning its strength cannot be increased through precipitation hardening. その代わり, strength adjustments are achieved through cold working (strain hardening), and the alloy is available in multiple tempers to suit different forming and service requirements.
International Designations
1050 aluminum is recognized globally under several standards:
ISO / で: Al99.5, EN AW-1050A
彼はそうです: A1050
から: 3.0255 (commonly referenced)
主な特徴
Extremely high aluminum purity
Excellent thermal and electrical conductivity
未解決の腐食抵抗
Superior ductility and formability
Relatively low mechanical strength
Because of this property balance, 1050 aluminum is best suited for applications where 導電率, 耐食性, and ease of forming are more critical than load-bearing capacity.
アルミニウム 1050 化学組成
As a commercially pure aluminum alloy, the chemical composition of 1050 aluminum is tightly controlled to maintain its defining characteristics.
Typical Composition
アルミニウム (アル): ≥ 99.5%
鉄 (鉄): ≤ 0.40%
ケイ素 (そして): ≤ 0.25%
銅 (銅): ≤ 0.05%
マンガン (ん): ≤ 0.05%
亜鉛 (亜鉛): ≤ 0.05%
チタン (の): ≤ 0.03%
Iron and silicon are the primary impurities and contribute modestly to strength without significantly degrading conductivity or corrosion resistance. The extremely low levels of alloying elements are the primary reason for the alloy’s softness and excellent workability.
アルミニウム 1050 機械的性質
アルミニウム 1050 is considered a low-strength but highly ductile 材料. Its mechanical properties vary depending on temper (○, H12, H14, 等), but typical values are summarized below.
Typical Mechanical and Physical Properties
密度: 2.71 g/cm3
融点: ~650 °C
弾性率: ~70 GPa
ポアソン比: ~0.33
Brinell Hardness: 20–30 HB
極限引張強さ: 60–105 MPa
降伏強さ: 20–30 MPa
破断伸び: 25–40％
せん断強度: ~25 MPa
疲労強度: ~30 MPa
The high elongation values clearly demonstrate the alloy’s suitability for deep drawing, 曲げ, ローリング, and other severe forming operations. しかし, the relatively low yield and tensile strengths limit its use in structural or high-load applications.
Fabrication of Aluminum Alloy 1050
溶接性
1050 aluminum exhibits excellent weldability, primarily due to its high purity and absence of crack-sensitive alloying elements such as magnesium or zinc.
Suitable welding processes:
ティグ (GTAW)
自分 (GMAW)
For thin sheets and precision work, AC TIG welding is commonly used, producing clean weld beads with good control. Argon or helium shielding gases are employed to prevent oxidation during welding.
For thicker sections or higher productivity, MIG welding is preferred. Using filler wire of matching or compatible composition helps preserve corrosion resistance and ductility. Weld strength typically approaches that of the base material.
Proper surface preparation, including mechanical or chemical removal of the aluminum oxide layer, is critical to avoid lack of fusion and porosity.
Brazing
Brazing 1050 aluminum is more challenging than welding due to:
The stable oxide layer on aluminum surfaces
The relatively narrow temperature difference between filler metal and base metal
Fluxes containing fluoride or chloride compounds are commonly required to disrupt the oxide layer. These fluxes must be thoroughly removed after brazing to prevent corrosion.
Vacuum brazing is an alternative method that eliminates flux use and produces cleaner joints, though at higher processing cost. Brazed joints generally have lower mechanical strength compared to welded joints.
Soldering
Soldering involves joining at temperatures typically below 450 °C and is technically possible with aluminum 1050, though it is not ideal for high-strength requirements.
課題には含まれます:
Rapid heat dissipation due to high thermal conductivity
Persistent oxide layer formation
Special fluxes and tin-based solders are required, along with meticulous surface preparation. Soldered joints offer limited mechanical performance and are usually restricted to low-load electrical or sealing applications.
熱処理
アルミニウム 1050 は not heat treatable in the conventional strengthening sense because it lacks alloying elements required for precipitation hardening.
しかし, アニーリング is commonly performed to:
Restore ductility after cold working
Reduce internal stresses
Improve formability
Typical annealing is carried out at 360–400 °C, followed by air cooling. This process softens the material and returns it to a highly workable state.
Key Applications of 1050 アルミニウム合金
Due to its unique combination of properties, 1050 aluminum is widely used in the following areas:
Electrical industry: conductors, busbars, transformer components
Chemical and food processing: タンク, コンテナ, 配管, and liners
Construction and architecture: 装飾パネル, 屋根ふき, 点滅する
再生可能エネルギー: solar reflectors and light-reflective components
Industrial manufacturing: 熱交換器, heat shields, ラベル, packaging materials
Its excellent corrosion resistance and food-safe nature make it particularly suitable for hygienic and outdoor environments.
結論
アルミニウム 1050 is a highly versatile engineering material when strength is not the primary requirement. Its superior conductivity, 耐食性, and exceptional formability make it indispensable in electrical, 化学薬品, and forming-intensive applications.
To ensure consistent quality and performance, it is essential to source aluminum 1050 from reputable manufacturers and fabricators with strict composition and process control.
よくある質問
What are the advantages of aluminum 1050?
未解決の腐食抵抗
Excellent formability and ductility
High thermal and electrical conductivity
Cost-effective and fully recyclable
What is the difference between aluminum 6061 そして 1050?
| 側面 | 6061 アルミニウム | 1050 アルミニウム |
| Aluminum Content | ≥ 98.85% | ≥ 99.5% |
| 主な合金要素 | マグネシウム, ケイ素 | 鉄, ケイ素 |
| 熱処理可能 | はい | いいえ |
| 強さ | 高い | 低い |
| 典型的な使用 | 構造部品 | Electrical and formed parts |
Is aluminum 5055 better than 1050?
Neither is universally “better.” Aluminum 5055 offers higher strength and is more suitable for structural applications, その間 1050 aluminum excels in ductility, 導電率, 耐食性.
What is the equivalent of aluminum 1050?
ASTM: 1350 / A91050 (commonly referenced)
から: 3.0255
で: EN AW-1050A
ISO: Al99.5
彼はそうです: A1050
What is the price of aluminum 1050?
Depending on market conditions, 形状, and supplier, アルミニウム 1050 typically ranges from 米ドル 2,000 に 3,500 per metric ton.
