The ductility of aluminum round tubes 1xxx 2xxx 3xxx
1. The ductility of aluminum round tubes refers to the ability of aluminum round tubes to deform without breaking when subjected to tensile force. The ductility of aluminum round tubes is related to factors such as its grade, state, size, shape, etc. Generally speaking, pure aluminum has the best ductility, while the ductility of aluminum alloys containing other elements will decrease. Aluminum becomes more ductile at higher temperatures, but its strength and stiffness decrease. The greater the stress, the less ductile the aluminum becomes and is prone to breakage or cracking.
2. The ductility of aluminum round tubes is usually expressed by elongation. Elongation refers to the ratio of the elongation of the aluminum round tube before breaking during the stretching process to the original length, expressed as a percentage. For example, the elongation of aluminum foil can reach more than 50%, while the elongation of general aluminum alloys is between 10% and 30%.
3. The ductility of the aluminum round tube is also related to its internal crystal structure. The lattice of the aluminum round tube is a face-centered cubic type, and the aluminum atoms are located on the nodes of the lattice and at the center of the face. This is equivalent to that there are 4 aluminum atoms. The peripheral electron configuration of aluminum atoms is 3s²3p¹, which often appears in the +3 oxidation state in compounds. Aluminum atoms have empty 3d orbitals and can form stable complexes with electron pair donors with a coordination number of 6 or
4. 1xxx series, 3xxx series, 6xxx series:
1000 series aluminum round tubes are pure aluminum round tubes.
The main representative brands are 1100, 1050, 1060, etc.
Containing more than 99% aluminum, and have good ductility, tensile strength, plasticity and corrosion resistance. The elongation of 1000 series aluminum round tubes is generally between 25% and 40%, and increases with the increase in aluminum content. The ductility of 1000 series aluminum round tubes mainly depends on factors such as thermal conductivity, resistivity, elastic modulus and grain size. Thermal conductivity refers to the heat that passes through a material per unit area under unit temperature difference per unit time, and reflects the material's ability to conduct heat. Resistivity refers to the resistance of a material when passing electric current under unit length and unit cross-sectional area, reflecting the material's ability to block electric current. The elastic modulus refers to the stress generated by unit strain within the elastic deformation range of the material, which reflects the material's ability to resist elastic deformation. Grain size refers to the average diameter of the material's grains, which reflects the fineness of the material's crystal structure. Generally speaking, the thermal conductivity of 1 series aluminum round tube is higher, which is 237 W/ (m·K), the resistivity is lower, which is 2.65×10⁻⁸Ω·m, and the elastic modulus is lower, which is 62 GPa. The grain size is larger, and these factors are conducive to improving the ductility of the aluminum round tube. From a chemical point of view, the ductility of 1000 series aluminum round pipes mainly depends on factors such as its chemical composition, aluminum oxide film and strengthening. Chemical composition refers to the types and proportions of elements contained in a material, which reflects the chemical properties and reactivity of the material. Aluminum oxide film refers to a dense aluminum oxide film formed by the reaction between the surface of the aluminum round tube and oxygen, which reflects the corrosion resistance and protection of the aluminum round tube. The strengthening phase refers to some substances present in the aluminum round tube that can improve the strength and hardness of the aluminum round tube, such as Mg₂Si, etc., which reflects the strain hardening ability of the aluminum round tube. Generally speaking, the chemical composition of series 1 aluminum round tubes is relatively simple, mainly aluminum. The aluminum oxide film is relatively stable and can protect the aluminum round tubes from further oxidation or erosion by other substances. The strengthening phase is relatively lacking, resulting in the deterioration of the aluminum round tubes. The strength and hardness are low, and these factors are conducive to improving the ductility of aluminum round pipes.
3000 series aluminum round tubes(aluminum-manganese alloy round tubes)
The main representative brands are 3003, 3004, 3103, etc.,
with a manganese content between 1.0% and 1.5%, and have good formability, corrosion resistance, weldability and fatigue Strength etc.
The elongation of 3000 series aluminum round pipes is generally between 10% and 20%, and decreases as the manganese content increases. The ductility of 3000 series aluminum round tubes mainly depends on factors such as thermal conductivity, resistivity, elastic modulus and grain size. Thermal conductivity refers to the heat that passes through a material per unit area under unit temperature difference per unit time, and reflects the material's ability to conduct heat. Resistivity refers to the resistance of a material when passing electric current under unit length and unit cross-sectional area, reflecting the material's ability to block electric current. The elastic modulus refers to the stress generated by unit strain within the elastic deformation range of the material, which reflects the material's ability to resist elastic deformation. Grain size refers to the average diameter of the material's grains, which reflects the fineness of the material's crystal structure. Generally speaking, the thermal conductivity of 3000 series aluminum round tubes is low, 142 W/ (m·K), the resistivity is high, 3.9×10⁻⁸Ω·m, and the elastic modulus is high, 69 GPa. The grain size is small, and these factors are not conducive to improving the ductility of aluminum round tubes. The ductility of 3000 series aluminum round tubes mainly depends on factors such as its chemical composition, aluminum oxide film and strengthening. Chemical composition refers to the types and proportions of elements contained in a material, which reflects the chemical properties and reactivity of the material. Aluminum oxide film refers to a dense aluminum oxide film formed by the reaction between the surface of the aluminum round tube and oxygen, which reflects the corrosion resistance and protection of the aluminum round tube. The strengthening phase refers to some substances present in the aluminum round tube that can improve the strength and hardness of the aluminum round tube, such as Mg₂Si, etc., which reflects the strain hardening ability of the aluminum round tube. Generally speaking, the chemical composition of 3000 series aluminum round tubes contains 1.0%~1.5% manganese. Manganese can form a solid solution with aluminum to improve the formability, corrosion resistance, weldability and fatigue strength of aluminum, but it will also reduce the aluminum's formability, corrosion resistance, weldability and fatigue strength. of ductility. The aluminum oxide film of the 3000 series aluminum round tube is relatively stable and can protect the aluminum round tube from further oxidation or erosion by other substances, but it will also increase the surface roughness of the aluminum round tube, which is not conducive to drawing processing.
6000 series aluminum round tubes are aluminum-magnesium-silicon alloy round tubes.
The main representative brands are 6061, 6063, 6082, etc.
The magnesium content is between 0.4% and 1.2%, and the silicon content is between 0.2% and 0.6%. It has Medium strength, corrosion resistance, weldability, processability and oxidation coloring properties, etc. The elongation of 6000 series aluminum round tubes is generally between 8% and 18%, and increases with the increase in magnesium and silicon content. From a physical point of view, the ductility of 6000 series aluminum round pipes mainly depends on factors such as its thermal conductivity, resistivity, elastic modulus and grain size. Thermal conductivity refers to the heat that passes through a material per unit area under unit temperature difference per unit time, and reflects the material's ability to conduct heat. Resistivity refers to the resistance of a material when passing electric current under unit length and unit cross-sectional area, reflecting the material's ability to block electric current. The elastic modulus refers to the stress generated by unit strain within the elastic deformation range of the material, which reflects the material's ability to resist elastic deformation. Grain size refers to the average diameter of the material's grains, which reflects the fineness of the material's crystal structure. Generally speaking, the thermal conductivity of 6000 series aluminum round tubes is low, 156~209 W/ (m·K), the resistivity is high, 4.5×10⁻⁸Ω·m, and the elastic modulus is high, 68.9 ~71.7 GPa, and the grain size is fine. These factors are not conducive to improving the ductility of the aluminum round tube. From a chemical point of view, the ductility of 6000 series aluminum round pipes mainly depends on factors such as its chemical composition, aluminum oxide film and strengthening. Chemical composition refers to the types and proportions of elements contained in a material, which reflects the chemical properties and reactivity of the material. Aluminum oxide film refers to a dense aluminum oxide film formed by the reaction between the surface of the aluminum round tube and oxygen, which reflects the corrosion resistance and protection of the aluminum round tube. The strengthening phase refers to some substances present in the aluminum round tube that can improve the strength and hardness of the aluminum round tube, such as Mg₂Si, etc., which reflects the strain hardening ability of the aluminum round tube. Generally speaking, the chemical composition of 6000 series aluminum round tubes contains 0.4% to 1.2% magnesium and 0.2% to 0.6% silicon. Magnesium and silicon can form a solid solution with aluminum, and at the same time can form a strengthening phase Mg₂Si, improving the performance of aluminum round tubes. The strength and hardness of the aluminum round tube will be reduced, but it will also reduce the ductility of the aluminum round tube. The aluminum oxide film of the 6000 series aluminum round tube is relatively stable and can protect the aluminum round tube from further oxidation or erosion by other substances, but it will also increase the surface roughness of the aluminum round tube, which is not conducive to drawing processing.