The Ultimate Encyclopedia of 1050 Letlapa la Aluminium : In-Depth Analysis from Metallurgy to Practical Application
The Ultimate Encyclopedia of 1050 Letlapa la Aluminium (Commercial Pure Aluminum): In-Depth Analysis from Metallurgy to Practical Application
I. Overview and Material Positioning
1050 Letlapa la Aluminium belongs to the 1xxx series aluminum alloys. According to international naming conventions, it represents a commercial pure aluminum with an aluminum content of no less than 99.5%. It is commonly designated as 1050 in the Chinese National Standard (GB / t), while in European standards (Ho), it is often referred to as AW-1050A (EN AW-Al99.5) with the numerical designation 3.0255. It is also a registered standard grade in the Aluminum Association (AA) litekanyetso.
Joalo ka Mollo o sa lefelloeng ka thata, the core value of 1050 does not lie in its mechanical strength, but rather in its extreme chemical stabilityle thepa ya mmele. (Boitšoaro ba motlakase, Ho Sebelisana le Pherekano, and reflectivity). It plays the role of a “foundation material” within the aluminum alloy family, analogous to mild steel (E.g., Q235) in the steel industry. Its mature production process and low casting/rolling costs make it a cornerstone material for connections, conduction, Anti-Corsuise, and deep stamping applications.
🔍 In-Depth Interpretation:
- Hobaneng o khetha 1050 Ho feta 1060?Leha ho le joalo 1060 has higher purity (99.6%), 1050 offers a better balance between strength and formability, and is usually more cost-competitive.
- Ke eng “e sa phekoleheng mocheso” mean? It means you cannot increase its hardness through quenching and aging like you would with 6061-T6. Its strength can only be increased through cold working (rolling, ho taka).
II. Metallurgical Characteristics and Micro-Mechanisms
1. Crystal Structure and Ductility
1050 aluminum possesses a Face-Centered Cubic (Fcc) crystal structure. This structure grants the material extremely high toughness and ductility, and it is not prone to brittle transitions even in low-temperature environments (such as liquid nitrogen temperatures), unlike some steels which suffer from cold brittleness. This is why 1050 is highly suitable for linings in cryogenic equipment (E.g., LNG carriers).
2. Self-Healing Oxide Film
Pure aluminum instantly reacts with oxygen in the air to form a dense layer of γ-Al₂O₃ (corundum) Filimi approximately 2-10 nanometers e teteaneng. This film is extremely compact and prevents further oxidation of the internal metal. If the surface is scratched, a new oxide film forms instantly upon exposure to air or water. This is the fundamental reason for its far superior corrosion resistance compared to ordinary carbon steel.
III. Detailed Chemical Composition (Mass Percentage %)
Precise chemical composition is key to determining the performance of 1050. Even trace impurities can significantly affect conductivity and processing performance.
| Element | Letshwao | Litaba (%) | Function and Impact |
|---|---|---|---|
| Aluminium. | Al. | ≥ 99.50. | Matrix element, determines high conductivity, Ho Sebelisana le Pherekano, le khanyetso ea kutu. |
| Tšepe | Fe | ≤ 0.40 | The most common impurity. Iron has very low solubility in aluminum and forms needle-like iron-rich phases, slightly reducing plasticity and corrosion resistance but increasing strength. |
| Silicone | Le | ≤ 0.25 | Often coexists with iron. Moderate silicon can improve casting performance, but excessive amounts in pure aluminum reduce ductility. |
| Koporo | Cu | ≤ 0.05 | Karolo ea litšila. Copper significantly increases strength but drastically reduces corrosion resistance (especially intergranular corrosion) le boitšoaro. |
| Manganese | Mong | ≤ 0.05 | Trace presence, tšusumetso e fokolang ea thepa. |
| Magnesium | Mg | ≤ 0.05 | Trace presence. |
| Zinki | Zn | ≤ 0.05 | Trace presence, generally considered a harmless impurity. |
| Titanium | Ea | ≤ 0.03 | Sometimes added as a grain refiner, helping to refine grains and improve processing surface quality. |
| Ba bang | – | ≤ 0.03 (e mong le e mong) | Strictly controlled to ensure the characteristics of pure aluminum. |
IV. Temper Details and Mechanical Property Spectrum
The properties of 1050 aluminum sheet vary greatly with its “temper.” Temper is determined by the combination of aninealingle cold working.
1. Temper Definition and Applicable Scenarios
| Khalefo | Full Name & Tlhaloso ea Ts'ebetso | Hardness Level | Recommended Application Scenarios |
|---|---|---|---|
| O. | E pakiloe. | ⭐ (Softest) | Extreme Deep Drawing: Such as cookware bodies, ho otlolla mohope oa lebone. Plastiki e ntle ka ho fetisisa, matla a tlase. |
| H111. | Stain-hardned. | ⭐⭐ | Kakaretso Ho theha: E matla ho feta O-temper, e boloka boholo ba polasetiki ea eona. |
| H12 / H22. | 1/4 Ka thata. | ⭐⭐⭐ | Setempe se sa tebang / Ho Kobeha: Likarolo tse hlokang bokhoni bo itseng ba ho boloka sebopeho. |
| H14 / H24. | Halofo ea thata. | ⭐⭐⭐⭐ | Kakaretso Sheet Metal: The atileng haholokhalefo 'marakeng. E loketse ho kobeha, rolling, le setšoantšo se sa tebang. |
| H16 / H26. | 3/4 Ka thata. | ⭐⭐⭐⭐⭐ | Likarolo tsa Sebopeho: E hloka matla a holimo, likarolo tse nang le deformation e nyane. |
| H18 / H28. | Ka thata. | ⭐⭐⭐⭐⭐⭐ | Tlhokahalo ea ho Rigidity: Joalo ka li-nameplates, likhase; ha e le hantle ha ho na ts'ebetso e eketsehileng ea polasetiki. |
(Hlokomela: H2x tempers refer to materials that are strain-hardened beyond the target hardness and then partially annealed. Their flaking resistance and toughness are usually better than H1x tempers of the same level.)
2. Detailed Mechanical Property Data Sheet
| Letšoao la Ts'ebetso | He bohale (E pakiloe) | H4 (Halofo ea thata) | Maikutlo a H18 (Ka thata) | Tekanyetso ea Teko |
|---|---|---|---|---|
| Matla a tšepe (Rm). | 60 – 100 MPa | 105 – 145 MPa. | 160 – 200 MPa | GB / t 228 |
| Proof Strength (Rp0.2). | ≥ 20 MPa | ≥ 85 MPa | ≥ 140 MPa | GB / t 228 |
| Emplation (A50 limilimithara). | ≥ 30% | ≥ 12% | ≥ 6% | GB / t 228 |
| Brinell Harll (Hbw). | 17 – 23 | 32 – 38 | 45 – 55 | GB / t 231 |
| Matla a Sheang. | ~ 40 MPa | ~ 70 MPa | ~ 95 MPa | – |
V. Physical Property Parameters (Performance at High and Low Temperatures)
| Thepa ea 'mele | Boleng | Bohlokoa ba Boenjiniere |
|---|---|---|
| Botenya (20°C). | 2.71 g/cm³ | First choice for lightweight design, weight is only 30% of copper. |
| Mefuta e mengata. | 646 – 657 °C | Easy to cast and remelt for recycling. |
| Thermal Conductivity (20°C). | 222 W /(M · h). | Extremely high heat dissipation efficiency, 3-5 times that of steel. |
| Boitšoaro ba motlakase. | 61.0 % Iacs. | Second only to copper, ideal for high-voltage transmission and busbars. |
| Se lekaneng ka mokhoa o hlakileng oa ho futhumatsa (20-100°C) | 23.8 × 10⁻⁶ /K | A variable that must be considered when designing heated components. |
| Matla a itseng a mocheso. | 900 J /(kg·K) | – |
| Elastic Modulus (Young’s Modulus). | 69 – 71 GPA | Basic data for force-deformation calculations. |
| Karolelano ea poisson. | 0.33 | – |
VI. Deep Processing and Manufacturing Guide
Ka lebaka la “soft yet tough” nature of 1050 aluminium, special strategies must be adopted during processing:
1. Hochinga
- Challenge: Extremely prone to generating a Built-up Edge (BUE), leading to rough surfaces, and chips tend to wrap around the tool.
- Countermeasures:
- Use high-speed steel or carbide tools with large rake angles and sharp cutting edges.
- Eketsa lebelo la ho itšeha le ho fokotsa sekhahla sa phepelo.
- E tlameha ho sebelisoa mokelikeli o khethehileng oa aluminium alloy cuttingbakeng sa pholiso e matla le lubrication.
2. Welding
- Monyetla: Ho Teba Hantle, ha ho na tloaelo ea ho peperana.
- Recommended Process: TIG (Tungsten Inert Gas) weldingke e atileng haholo, ho hlahisa ditjhese tse ntle tse teteaneng; KHONA (Metal Inert Gas) welding e ka boela ea sebelisoa bakeng sa tlhahiso e ikemetseng.
- Hlokomela: terata ea welding hangata e sebelisa ER1100 kapa ER4043. Kamora ho tebela, sebaka se amehileng ka mocheso le mocheso se tla nolofala (ho kgutlela boemong bo haufi le O temper).
3. Ho theha
- Ho kobeha: Sebaka se fokolang sa ho kobeha se khothalelitsoeng bakeng sa bohale ba H14 ke 1.0T – 1.5T. (t = botenya ba poleiti). O temper can achieve 0t dead bending.
- Setšoantšo se tebileng: 1050-O is an excellent material for making aluminum pots and bottle caps, allowing for large drawing ratios.
4. Phekolo ea holimo
- Anodizing: Although the pure aluminum oxide film has high transparency and good adsorption, its wear resistance is inferior to alloys like 6061 due to the lack of alloying elements. It is often used for mirror reflector plates after chemical polishing.
- Ho roala: Adheres extremely well to paints and powder coatings.
VII. In-Depth Analysis of Industry Applications
| Industry Sector | Specific Application Examples | Material Selection Reason |
|---|---|---|
| Power & Motlakase. | Transformer windings, bus ducts, capacitor casings, lithium battery flexible connections | High conductivity, mabenyane a tlase, theko e tlase. |
| Tsamaiso ea Mocheso. | CPU heatsink fins, LED streetlight housings, AC heat exchangers, vapor chambers | Ultra-high thermal conductivity, easy to process into complex cooling structures. |
| Chemical Anti-Corrosion. | Concentrated nitric acid storage tanks, pharmaceutical reactor linings, acid transport pipes | Extremely strong corrosion resistance in oxidizing media and remains ductile at low temperatures. |
| Meaho & Mokhabiso. | Aluminum ceilings, curtain wall composite panel cores, roof panels, blinds | Ho hanela ha boemo bo botle ba leholimo, easy to roll coat, Ho bonolo ho theha. |
| Lighting Industry. | Streetlight reflectors, spotlight reflector cups, automotive headlight reflectors | Visible light reflectivity > 85%, excellent optical performance. |
| Lijo & Cookware. | Non-stick pan substrates, aluminum steamers, Sethala sa ho jarolla lijo, lunch box molds | E seng chefo, e senang monko, ho bonolo ho e hloekisa, fast heat conduction. |
| TLHOKOMELISO & Plate-making. | PS plate base, CTP plate base | Bokhoni bo botle bo botle, good ink affinity after surface treatment. |
VIII. Competitor Comparison: 1050 khahlano le 1060 khahlano le 1100 khahlano le 3003
To assist in better material selection, here is a detailed comparison of 1050 with common similar materials:
| Tšobotsi | 1050 (Al99.5). | 1060 (Al99.6). | 1100 (Al99.0). | 3003 (Al-Mn). |
|---|---|---|---|---|
| Bohloeki ba Aluminium. | 99.5% | 99.6%. | 99.0% | 96.7% (Leka-lekanya Mn) |
| Conductivity/ Thermal Cond.. | E kgabane | E nepahetseng. | E ntle | Metsi a mahareng |
| Khanyetso ea Corrosion. | E kgabane | E kgabane | E kgabane | E ntle |
| Matla. | Tlase | Tlase | Mahareng-Phase | Metsi a mahareng (20% hodimo hofeta 1050). |
| Theko. | Moruo. | Holimo hanyane | Metsi a mahareng | Metsi a mahareng |
| Tlhahlobo e Felletseng. | Morena oa litšenyehelo-ka katleho, e loketseng bakeng sa maemo a mangata a akaretsang. | E loketse libaka tse nang le litlhoko tse feteletseng bakeng sa conductivity / ho senya mocheso. | E loketse likarolo tse akaretsang tse hlokang matla a seng makae. | E loketse likarolo tsa sebopeho tse hlokang ho thibela mafome le matla a itseng. |
IX. Sephutheloana, Polokelo, le Maemo a Tlhatlhobo
1. Sephutheloana se Tloaelehileng
Ho thibela ho fifala ha oxidation kapa mengoallo holim'a aluminium e hloekileng, regular export packaging usually includes:
- Lera le ka Hare: Individual sheets separated by PE blue filmkapa neutral kraft paper.
- Lera le Bohareng: The entire stack of sheets is tightly wrapped with pampiri e thibelang mongobo. + plastic bubble film.
- Lera le ka Ntle: Placed on a fumigation-free pallet, strapped with steel bands, and covered externally with a corrugated cartonkapa plywood case.
2. Storage Recommendations
- Should be stored in an indoor warehouse that is dry, ventilated, and free of acid/alkali mist.
- Avoid direct contact with the ground; use wooden pads to elevate the material.
3. Inspection Points
- Dimensional Tolerance: Check if the thickness complies with GB/T 3880 kapa en 485 litekanyetso.
- Thepa ea Mechini: Spot-check hardness or request a Mill Test Certificate (MTC).
- Boleng ba bokapele: Ha ho mapetsong, matheba a oli, severe scratches, or roller marks.
Q&A
Q1: Ka 1050 aluminum sheet be used for ship decks or structural parts in seawater environments?
A:. Absolutely not recommended. Although 1050 resists atmospheric corrosion, it is very sensitive to chloride ions (Cl⁻). Seawater is rich in chlorides, which can cause pitting corrosion and crevice corrosion, rapidly penetrating thin sheets. Marine environments should use 5xxx series (E.g., 5052, 5083) Lisebelisoa tsa Al-Mg, which have excellent resistance to seawater.
Q2: Why does H14 temper 1050 aluminum sheet crack easily during bending?
A: There could be three reasons:
- Bend Radius Too Small: Although H14 is half-hard, it still needs to follow the minimum bending radius (usually recommended 1.0t~1.5t, where t is plate thickness); too small an R angle will cause outer side tearing.
- Grain Direction (Anisotropy): Aluminum sheets have a fiber flow direction during rolling. Bendability is best if the bending line is perpendicular to the rolling direction; it is more likely to crack if parallel to the rolling direction.
- Material Impurities: If iron and silicon impurities are at the upper limit, or if the grain size is coarse, plasticity will also decrease.
Q3: Ka 1050 undergo Hard Anodizing?
A:. Difficult and not recommended. Hard anodizing usually requires the presence of elements like magnesium and silicon (E.g., 6061) to support the hardness and adhesion of the thick oxide film. The oxide film generated by pure aluminum 1050 is relatively soft and difficult to form a thick film (usually <25μm), and its hardness and wear resistance are far from meeting hard anodizing standards.
Q4: Why does 1050 aluminum sheet sometimes turn black or develop white spots after being stored for a period of time?
A: This is usually due to poor packaging.
- White Spots: Usually water stains or alkaline residues. Moisture trapped between sheets cannot evaporate, causing local corrosion.
- Blackening: Possibly oil oxidation or contact with rubber/sulfide-releasing plastics. Always use neutral packaging materials and ensure the warehouse is dry and ventilated.
Q5: Is there a big price difference between 1050 le 1060? Where does it mainly differ?
A: The price difference per ton is usually a few hundred RMB. The differences mainly lie in:
- Litsenyehelo tsa ho ja: 1060 requires higher purity aluminum ingots, and scrap recycling requirements are stricter.
- Taolo ea Ts'ebetso: Ho hlahisa 99.6% purity aluminum sheet requires finer impurity control processes than 99.5%.
- Application Distinction: If the requirement for conductivity is not extremely critical (E.g., ordinary heat sinks vs. ultra-high voltage busbars), 1050 offers better cost-effectiveness.
Q6: What should I do if the strength of 1050 aluminum sheet decreases after welding?
A: This is a normal phenomenon (annealing effect). Arc heat causes the cold-working hardening effect in the weld and heat-affected zone to disappear, returning to a soft state close to O temper. If the structure requires strength, The cross-sectional thickness at the weld should be increased during design to compensate for the strength loss, or consider using mechanical connection methods like riveting or adhesive bonding instead of welding.
Kakaretso
1050 Letlapa la Aluminium is more than just a piece of metal; it is a low-cost solution for conduction, ho qhala mocheso, and anti-corrosion demands in modern industry. It sacrifices high strength in exchange for unparalleled processing tolerance and chemical stability. Whether you are designing an LED luminaire requiring efficient heat dissipation, searching for a material for acid-alkali resistant chemical containers, or needing to stamp complex hardware parts in large quantities, 1050 Letlapa la Aluminium is your preferred “safe bet” le “economic choice.”
