6181 aluminum alloy is a material commonly used in automobile body panels. It has the characteristics of light weight, high strength, corrosion resistance, good plasticity and good weldability.
6181 aluminum alloy body panels can improve the fuel economy, safety and handling of the car, and at the same time extend the service life of the car body, and are suitable for the manufacture of various types of car body panels.
Why choose Chalco Aluminum's 6181 T4P automotive body sheet?
Chalco auto body sheet production capacity
It has an acid-alkali cleaning and passivation unit for automotive sheet, and the heat-treated (such as: T4, T4P, T6, T8X) 6181 T4P aluminum alloy sheetss produced can well meet the requirements of automobile shells.
Chalco Aluminum can provide 6-series automotive inner panels, 6-series outer panels, and automotive structural materials, realizing full coverage of key automotive lightweight panels, and the industrialization of automotive lightweight materials has entered a new stage.
Automotive IATF16949 standard
Chalco Aluminum has passed the requirements of the automotive IATF16949 standard audited by BSI (British Standards Institution), providing quality compliance for continuously expanding the automotive product market and achieving high-quality development.
Well-known brand material certifications
Serving Tesla, Ford, Shanghai Automobile, NIO Automobile, BAIC New Energy, Changan Automobile and other famous new energy automobile manufacturers, confirmed the material certification relationship, and completed the parts of many automobile factories such as BAIC New Energy and NIO Automobile Model car plate material certification.
Specs of 6181 T4P automotive body sheet
| Alloy | 6181 |
| Temper | T4P, T6B |
| ABS sheet dimension | Thickness: 0.7-1.5mm |
| Width: 800-2400mm | |
| Length: 800-5500mm | |
| ABS coil dimension | Thickness: 0.70-1.50mm |
| Width: 800-2400mm | |
| Standard | GB/T 33227-2016, JIS H4000, ASTM B209, EN 485 |
Chemical composition of 6181 aluminum alloy
| Element | Composition % |
| Si | 0.8-1.20 |
| Fe | 0.45 |
| Cu | 0.10 |
| Mn | 0.15 |
| Mg | 0.60-1.00 |
| Cr | 0.10 |
| Ni | - |
| Zn | 0.20 |
| Ti | 0.10 |
| Al | Remainder |
Surface processing method of 6181 T4P automobile aluminum plate
| Surface processing method | Code name | Paraphrase |
| Mill face | MF | The surface of the rolling machined product ground by grinding wheel |
| Textured surface | EDT | Product surface processed by spoke rolling using EDM |
| Surface treatment | Code name | Paraphrase |
| Chemical cleaning | NP | Product surface treated with acid and alkali liquid |
| Passivation | P | The surface of the product buried by the designated pretreatment agent |
| Dry oiling | DO | Product surface coated with specified solid grease |
| Wet oiling | EO | Product surface coated with specified liquid grease |
Surface treatment of 6181 T4P automotive aluminum sheets
| Features | Code name | Paraphrase |
| For standard board | S | For products with no special requirements on surface and performance |
| For high bake hardened panels | IBR | For products with greater strength after baking |
| For high flanged panels | IH | For products requiring better flanging properties |
| For high-strength board | HS | Products for high-strength areas |
| For low strain plates | RSS | 5X X X series products for parts with low strain requirements |
Mechanical properties of 6181 T4P automobile body panels at room temperature
| Alloy | 6181 |
| Code name | HS |
| Temper | T4P |
| Sample temper | T4P |
| Thickness mm | 0.70-1.50 |
| Tension Strength Rm N/mm2 | ≥250 |
| Yield Strength R p0.2 N/mm2 | 115-170 |
| Max Elongation A % | ≥18 |
| Elongation after break A 50 min % | ≥20 |
| Strain hardening exponentn (10%-20%Stain) | ≥0.23 |
| Plastic strain ratior （10%Stain） | ≥0.5 |
Tensile mechanical properties at room temperature after simulated baking
| Alloy | 6181 |
| Code Number | HS |
| Temper | T4P |
| Sample temper | T6B |
| Thickness mm | 0.70-1.50 |
| Specified non-proportional tensile strength R p0.2 N/mm2 | 250-300 |
Other requirements of aluminum car body sheet metal
| Flange performance | The grade of flanging of panels and strips for body panels is grade 1 or grade 2. If other products require flanging performance, it should be indicated in the order (or contract). |
| Paint brush line | The grade of paint brushing line for panels and samples of body panels is grade 1 or grade 2. When other products require the performance of paint wire, it should be indicated in the order (or contract). |
| Anti-dent performance | When the buyer has requirements on the dent resistance performance of the panels and strips used for body panels, the supplier shall provide relevant data on the dent resistance performance. |
| FLD performance | When the purchaser has FLD performance requirements for panels and strips used for body panels，the supplier shall provide relevant data on FLD performance. |
| High speed tensile properties | When the buyer has high-speed drawing performance requirements for the panels and strips used for body panels, the supplier shall provide relevant data on the high-speed drawing performance. |
| Microstructure | The microstructure of plates and strips subjected to solution heat treatment is not allowed to be over-burned. |
| Oil amount | The oiling of the product is most determined through negotiation between the supplier and the buyer, and is indicated in the order form (or contract). |
| Passivation film thickness | The passivation film thickness of the product is determined through negotiation between the supplier and the buyer, and is specified in the order form (or contract). |
| Appearance Quality | Defects such as surface roughness, slight unevenness, scratches, color difference and small prints are allowed on the surface of panels and strips for inner panels of body panels and panels and strips for body structural parts, which do not affect the formability. |
| Defects such as cuts and marks that affect the use are not allowed on the outer surface of the panels and strips used for the outer panels of the body panels, and defects such as slight color difference, such as paint openings and cover-ups, are allowed. |
Features of 6181 T4P automotive body sheet
6181 aluminum alloy is a material commonly used in automobile body panels, which has the following characteristics:
Lightweight: 6181 aluminum alloy has a low density. Compared with traditional steel, it can reduce the weight of the car and improve fuel economy and handling.
High strength: 6181 aluminum alloy has high strength and rigidity, which can improve the structural strength of the car body and improve safety.
Anti-corrosion: 6181 aluminum alloy has good anti-corrosion performance, which can maintain the durability and aesthetics of the body in harsh environments.
Plasticity: 6181 aluminum alloy has good plasticity and can be easily processed into automobile body panels of various shapes and sizes.
Good weldability: 6181 aluminum alloy has good weldability and can be easily assembled with other materials into automobile body panels
Uses of 6181 T4P automotive body sheet
The specific uses of 6181 T4P automobile body panels are as follows:
Doors: the doors made of 6181 T4P aluminum alloy body sheets have high strength and toughness, while being light in weight, which can reduce the weight of the body and improve fuel economy.
Hood: the hood made of 6181 T4P aluminum alloy body panels can improve the performance and fuel economy of the car, and has good corrosion resistance, which can prolong the service life.
Roof: the roof made of 6181 T4P aluminum body panels has light weight, high strength and good corrosion resistance, which can improve the stability and safety of the car.
Car compartment: the compartment made of 6181 T4P auto aluminum body sheets have the characteristics of light weight, high strength and corrosion resistance, which can improve the fuel economy and safety of the car, and also prolong the service life of the car body.
What precautions should I take when purchasing 6181 T4P automotive body sheet?
When purchasing 6181 T4P auto body sheets, you need to pay attention to the following points:
Specification requirements: when purchasing, you need to choose the appropriate specifications and thickness according to actual needs to ensure that the aluminum sheet can meet the use requirements.
Quality requirements: choose a supplier with excellent quality to ensure that the quality of the aluminum plate meets the relevant standards and requirements, so as not to affect the use effect.
Processing requirements: if the aluminum sheet needs to be processed, it is necessary to confirm the machinability of the aluminum sheet with the supplier to ensure a smooth processing process.
Packaging and transportation: when purchasing, you need to pay attention to the packaging and transportation methods of the aluminum sheet to ensure that the aluminum plate will not be damaged during transportation.
Price and service: in addition to considering the quality and performance of the aluminum plate, you also need to consider the price and after-sales service, and choose a cost-effective supplier to obtain a better purchase experience and after-sales guarantee.
Thickness deviation of automotive body panels
| Thickness | Thickness tolerances within the following width ranges | ||
| 800.0-1600.0 | >1600.0-1800.0 | >1800-2400.00 | |
| 0.70-1.00 | ±0.03 | ±0.05 | ±0.08 |
| >1.00-1.20 | ±0.04 | ±0.06 | ±0.09 |
| >1.20-1.50 | ±0.05 | ±0.07 | ±0.10 |
Width deviation of panels and strips for body panels
| Thickness | Width tolerances within the following width ranges | ||
| 800.0-1600.0 | >1600.0-1800.0 | >800.0-1 250.0 | |
| 0.70-1.50 | + 0, 3 0 | + 5.0 0 | + 6.0 0 |
Length deviation of panels for auto body panels
| Thickness mm | Length tolerances within the following length ranges | |
| 800.0-2 000.0 | >2 000.0 | |
| 0.70-1.50 | + 3.0 0 | + 5.0 0 |
Diagonal deviation of panels for auto body panels
| Length | The allowable deviation of the two diagonal lengths of the board corresponding to the following width W | |
| 800.0-1 600.0 | >1 600.0-2 400.0 | |
| <3 000.0 | 1.2 × W/300 | 1.0 × W/300 |
| >3 000.0 | 1.0 × W/300 | 0.8 × W/300 |
Unevenness of panels for body panels
| Thickness mm | The unevenness of plates and strips within the following width ranges shall not be greater than | Termination area, warpage height | ||||
| <500.0 | >500.0-1 000.0 | >1 000.0-1 500.0 | >1 500.0-2 000.0 | >2 000.0 | ||
| 0.30-0.50 | 3 | 4 | 4 | 4 | — | ≤25 |
| >0.50-0.80 | 3 | 4 | 4 | 7 | 8 | |
| >0.80-1.60 | 3 | 4 | 4 | 6 | 8 | |
| >1.60-2.00 | 3 | 4 | 4 | 6 | 8 | |
| >2.00-3.50 | 3 | 4 | 4 | 6 | 8 | |