What Can We Supply
Langhe Aluminum provides a variety of high-quality aluminum alloy materials, mainly including:
Rolled aluminum alloy: aluminum plate, aluminum coil, aluminum foil, aluminum strip, aluminum disc, mirror aluminum, embossed aluminum, etc.;
Extruded aluminum alloy: aluminum profiles;
Cast aluminum alloy: aluminum rods, aluminum alloy customized accessories;
Introduction to Aluminum
Aluminum is a silvery-white light metal with the element symbol Al and atomic number 13.
Its content in the earth’s crust ranks third after oxygen and silicon, accounting for 8.1%, higher than iron (5%).
Aluminum (alloy) is a metal material with a production volume second only to steel, and it has only been developed and used by humans for more than 100 years.
Classification of Aluminum
Aluminum can be simply divided into pure aluminum and aluminum alloy according to its chemical composition.
Pure Aluminum
Industrial pure aluminum (99.0%~99.85%):
Used in conductive materials (such as wires), daily necessities and low-strength structural parts.
High-purity aluminum (above 99.95%):
Used in high-tech fields such as electronic components and optical coatings.
Industrial Pure Aluminum Grades And Chemical Composition
| Grade | Aluminum Content | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Other Elements |
|---|---|---|---|---|---|---|---|---|---|---|
| 1050 | ≥99.5% | ≤0.25% | ≤0.40% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.03% | ≤0.03% |
| 1060 | ≥99.6% | ≤0.25% | ≤0.35% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.03% | ≤0.03% |
| 1070 | ≥99.7% | ≤0.25% | ≤0.30% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.03% | ≤0.03% |
| 1100 | ≥99.0% | ≤0.95% | ≤0.95% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.10% | ≤0.03% | ≤0.03% |
Aluminum Alloy
Aluminum alloy is an alloy material formed by adding other metal or non-metal elements to aluminum as the matrix.
Aluminum alloy has light weight, high strength, good electrical and thermal conductivity and excellent processing performance.
Aluminum alloy can be divided into:
Deformed Aluminum Alloy
Deformed aluminum alloy is an aluminum alloy formed by plastic processing such as rolling and extrusion.
Non-heat treatment strengthening
Non-heat treatment strengthening mainly improves the strength of aluminum alloys by cold working hardening.
During the processing, the lattice of the material is distorted and the dislocation density increases, thereby enhancing the strength and hardness of the material.
This method is suitable for aluminum alloys that do not contain strengthening phases that can be precipitated by heat treatment.
These alloys have good corrosion resistance and formability, but relatively low strength.
Through cold working hardening, their strength and hardness can be improved to a certain extent.
The main non-heat treatment strengthening aluminum alloys are:
1xxx series (pure aluminum): 1xxx series aluminum alloys, commonly known as pure aluminum alloys, usually have an aluminum content of more than 99%, and have excellent corrosion resistance, good conductivity and formability.
However, its strength is relatively low and is mainly used in applications that do not require high strength, such as power, electrical appliances, chemical equipment, etc.
Common grades include 1050, 1100, etc.
3xxx series (Al-Mn alloy): 3xxx series aluminum alloy, mainly composed of aluminum and manganese, has good formability, weldability and corrosion resistance.
Common grades include 3003, 3004, 3104, etc. These alloys are widely used in the manufacture of tanks, pressure tanks, storage devices, heat exchangers, chemical equipment, aircraft fuel tanks, cryogenic devices, oil pipelines, kitchen equipment, welding wires and building materials for transporting liquid products.
5xxx series (Al-Mg alloy): 5xxx series aluminum alloy, mainly with magnesium as alloying element, has excellent corrosion resistance, good weldability and formability, and moderate strength.
Common grades include 5052, 5083, 5086, etc. These alloys are widely used in ships, automobiles, aircraft, pressure vessels, transportation equipment, missile parts, decks and other fields.
Non-heat-treatable Aluminum Alloy Grades And chemical composition
| Grade | Aluminum Content | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Other Elements |
|---|---|---|---|---|---|---|---|---|---|---|
| 1050 | ≥99.5% | ≤0.25% | ≤0.40% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.03% | ≤0.03% |
| 1060 | ≥99.6% | ≤0.25% | ≤0.35% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.03% | ≤0.03% |
| 1070 | ≥99.7% | ≤0.25% | ≤0.30% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.03% | ≤0.03% |
| 1100 | ≥99.0% | ≤0.95% | ≤0.95% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.10% | ≤0.03% | ≤0.03% |
| 3003 | ≥97.5% | 0.60-0.90% | ≤0.70% | ≤0.05% | 1.0-1.5% | ≤0.05% | ≤0.10% | ≤0.10% | ≤0.05% | ≤0.03% |
| 3004 | ≥96.5% | 0.60-0.90% | ≤1.00% | 0.90-1.30% | 1.0-1.5% | 0.80-1.30% | ≤0.25% | ≤0.20% | ≤0.05% | ≤0.05% |
| 3A21 | ≥98.5% | 0.60-0.90% | ≤0.70% | ≤0.05% | 1.0-1.5% | ≤0.05% | ≤0.10% | ≤0.10% | ≤0.05% | ≤0.03% |
| 3104 | ≥95.0% | 0.60-0.90% | ≤0.60% | 0.70-1.00% | 1.0-1.5% | 0.80-1.30% | ≤0.25% | ≤0.10% | ≤0.05% | ≤0.05% |
| 3105 | ≥97.0% | 0.60-0.90% | ≤0.70% | ≤0.05% | 0.70-1.00% | 1.0-1.5% | ≤0.10% | ≤0.10% | ≤0.05% | ≤0.03% |
| 5005 | ≥97.0% | ≤0.40% | ≤0.70% | ≤0.10% | 0.20-0.80% | 4.0-5.0% | ≤0.20% | ≤0.10% | ≤0.10% | ≤0.05% |
| 5052 | ≥97.25% | ≤0.25% | ≤0.40% | ≤0.10% | 0.20-0.80% | 2.2-2.8% | ≤0.15% | ≤0.10% | ≤0.15% | ≤0.03% |
| 5083 | ≥93.0% | ≤0.40% | ≤0.50% | 4.0-4.9% | 0.10-0.30% | 4.0-4.9% | ≤0.10% | ≤0.10% | ≤0.05% | ≤0.05% |
| 5086 | ≥94.0% | ≤0.30% | ≤0.70% | 3.5-4.5% | 0.20-0.50% | 3.0-4.0% | ≤0.20% | ≤0.10% | ≤0.05% | ≤0.05% |
| 5182 | ≥94.5% | 0.40-0.60% | ≤0.40% | 1.0-1.5% | 0.10-0.30% | 3.0-4.5% | ≤0.20% | ≤0.10% | ≤0.05% | ≤0.05% |
| 5252 | ≥97.0% | ≤0.30% | ≤0.70% | 0.10-0.20% | 0.20-0.80% | 2.2-2.8% | ≤0.20% | ≤0.10% | ≤0.10% | ≤0.05% |
| 5454 | ≥95.0% | ≤0.25% | ≤0.70% | 0.10-0.20% | 1.0-1.5% | 2.6-3.6% | ≤0.20% | ≤0.10% | ≤0.10% | ≤0.05% |
| 5754 | ≥94.5% | ≤0.25% | ≤0.70% | 0.10-0.20% | 1.0-1.5% | 3.0-4.0% | ≤0.20% | ≤0.10% | ≤0.05% | ≤0.05% |
Heat treatment strengthening
Heat treatment strengthening aluminum alloys mainly include the following categories:
2xxx series (aluminum-copper alloy): with copper as the main alloying element, it has high strength and good processing properties, but poor corrosion resistance.
Common grades include 2024, 2011, etc. Widely used in the aerospace field.
6xxx series (aluminum-magnesium-silicon alloy): With magnesium and silicon as the main alloying elements, it has good strength, corrosion resistance and processing performance.
Common grades include 6061, 6063, etc. Widely used in construction, transportation and machinery manufacturing.
7xxx series (aluminum-zinc alloy): With zinc as the main alloying element, it has extremely high strength but poor corrosion resistance.
Common grades include 7075, 7050, etc. Mainly used in aerospace and military fields.
These alloys form fine strengthening phases through heat treatment processes such as solution treatment, quenching and aging, which significantly improves the strength and hardness of aluminum alloys.
However, the corrosion resistance of these alloys is relatively poor, and surface treatment is usually required to improve their corrosion resistance.
Heat-treatable Aluminum Alloy Grades And Chemical Composition
| Grade | Aluminum Content | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Other Elements |
|---|---|---|---|---|---|---|---|---|---|---|
| 2219 | ≥93.5% | ≤0.50% | 2.0-3.0% | 5.8-6.8% | ≤0.30% | 1.2-1.8% | ≤0.15% | ≤0.25% | ≤0.15% | ≤0.05% |
| 2024 | ≥90.7% | ≤0.50% | ≤1.30% | 3.8-4.9% | ≤0.30% | ≤1.80% | ≤0.10% | ≤0.25% | ≤0.15% | ≤0.05% |
| 6016 | ≥97.0% | 0.40-0.80% | ≤0.70% | 0.70-1.00% | ≤0.20% | 1.0-1.5% | ≤0.10% | ≤0.20% | ≤0.05% | ≤0.05% |
| 6061 | ≥97.9% | 0.40-0.80% | ≤0.70% | 0.15-0.40% | ≤0.15% | 0.80-1.20% | ≤0.25% | ≤0.25% | ≤0.15% | ≤0.05% |
| 6082 | ≥97.0% | 0.70-1.00% | ≤0.70% | 0.60-0.90% | ≤0.10% | 1.2-1.8% | ≤0.25% | ≤0.25% | ≤0.10% | ≤0.05% |
| 7075 | ≥87.1% | ≤0.50% | ≤2.00% | 5.1-6.1% | ≤0.30% | ≤2.50% | ≤0.18% | ≤0.25% | ≤0.20% | ≤0.05% |
Cast Aluminum Alloy
Cast aluminum alloy is a metal material formed into the desired shape by pouring molten aluminum alloy liquid into a mold and cooling and solidifying it.
Compared with deformed aluminum alloy, cast aluminum alloy usually has a higher content of alloy elements, which makes it have good fluidity and filling properties during the casting process and is suitable for manufacturing parts with complex shapes.
Common brand expression is xxx.x
The first digit indicates the alloy group according to the major alloying element:
- 1xx.x aluminum, 99.0% minimum;
- 2xx.x copper (4%…4.6%);
- 3xx.x silicon (5%…17%) with added copper and/or magnesium;
- 4xx.x silicon (5%…12%);
- 5xx.x magnesium (4%…10%);
- 7xx.x zinc (6.2%…7.5%);
- 8xx.x tin;
- 9xx.x others.
The second two digits identify aluminum alloy or indicate the alloy purity.
In the alloys of the 1xx.x series the second two digits indicate the level of purity of the alloy – they are the same as the two digits to the right of the decimal point in the minimum concentration of aluminum (in percents): 150.0 means minimum 99.50% of aluminum in the alloy, 120.1 means minimum 99.20% of aluminum in the alloy.
In all other groups of aluminum alloys (2xx.x through 9xx.x) the second two digits signify different alloys in the group.
The last digit indicates the product form: casting (designated by “0”) or ingot (designated by “1” or “2” depending on chemical composition limits.)
A modification of the original alloy or impurity limits is indicated by a serial letter before the numerical designation.
The serial letters are assigned in alphabetical order starting with A but omitting I, O, Q, and X (the letter “X” is reserved for experimental alloys).
Cast Aluminum Alloy Grades And Chemical Composition
| Designation | Si,% | Cu,% | Mn,% | Mg,% | Zn,% | Ti,% | Others,% |
|---|---|---|---|---|---|---|---|
| 201.0 | 0.1 max. | 4.0-5.2 | 0.2-0.5 | 0.15-0.55 | – | 0.15-0.35 | Ag 0.4-1.0 |
| 208.0 | 2.5-3.5 | 3.5-4.5 | 0.5 max. | 0.1 max. | 1.0 max. | 0.25 max. | – |
| 222.0 | 2.0 max. | 9.2-10.7 | 0.5 max. | 0.15-0.35 | 0.8 max. | 0.25 max. | – |
| 333.0 | 8.0-10.0 | 3.0-4.0 | 0.5 max. | 0.05-0.5 | 1.0 max. | 0.25 max. | – |
| 356.0 | 6.5-7.5 | 0.25 max. | 0.35 max. | 0.2-0.45 | 0.35 max. | 0.25 max. | – |
| 413.0 | 11.0-13.0 | 1.0 max. | 0.35 max. | 0.1 max. | 0.5 max. | – | – |
| 443.0 | 4.5-6.0 | 0.6 max. | 0.5 max. | 0.05 max. | 0.5 max. | 0.25 max. | – |
| 514.0 | 0.35 max. | 0.15 max. | 0.35 max. | 3.5-4.5 | 0.15 max. | 0.25 max. | – |
| 518.0 | 0.35 max. | 0.25 max. | 0.35 max. | 7.5-8.5 | 0.15 max. | – | – |
| 705.0 | 0.2 max. | 0.20 max. | 0.4-0.6 | 1.4-1.8 | 2.7-3.3 | 0.25 max. | Cr 0.2-0.4 |
| 713.0 | 0.25 max. | 0.4-1.0 | 0.6 max. | 0.2-0.5 | 7.0-8.0 | 0.25 max. | – |
| 852.0 | 0.4 max. | 1.7-2.3 | 0.1 max. | 0.6-0.9 | – | 0.25 max. | Sn5.5-7.0, Ni0.9-1.5 |