Types and Applications of Aluminum Alloys for Automobiles
Share1000 Series Alloys（pure aluminum）
| Alloy designation | Features | Applications to automobiles | ||
|---|---|---|---|---|
| AA* | JIS | UACJ | ||
| 1050 | 1050 | A50 | High workability and surface treatability, and the highest corrosion resistance among all aluminum alloys | Heat insulators |
| 1100 | 1100 | A30 | 99.0% pure aluminum for general use | Heat insulators, license plates |
| 1200 | 1200 | A0 | The same as A50 except it slightly whitens after being anodized | Heat insulators |
- AA: The Aluminum Association (USA)
2000 Series Alloys（Al-Cu）
| Alloy designation | Features | Applications to automobiles | ||
|---|---|---|---|---|
| AA* | JIS | UACJ | ||
| 2014 | 2014 | 14S | Low in corrosion resistance because of high Cu content but high in strength, used in structural members. | Motorcycle handlebars, ABS |
| 2017 | 2017 | 17S | Shock absorbers, steering wheel spokes, connecting rods | |
| 2024 | 2024 | 24S | ||
| 2219 | 2219 | B19S | High strength, excellent low- & high-temperature properties and weldability, low corrosion resistance. | Rotors |
| 2618 | 2618 | 2618 | Keeps high strength at high temperatures and is suitable for forging and cutting. | Turbo compressor wheels, pistons |
| － | － | CG29 20A1 |
2618 alloy with improved high-temperature strength | Connecting rods, pistons |
| － | － | CB156 CB256 KS28S KS26 |
Lead-free free-cutting alloys | AT valve bodies |
- AA: The Aluminum Association (USA)
3000 Series Alloys（Al-Mn）
| Alloy designation | Features | Applications to automobiles | ||
|---|---|---|---|---|
| AA* | JIS | UACJ | ||
| 3003 | 3003 | 303S D3S |
Approx. 10% higher strength than 1100 and good workability and corrosion resistance | Piping |
| 3004 | 3004 | 304S 4S |
Higher strength than 3003 and excellent deep-drawability and good corrosion resistance | Cowl grilles, heat insulators |
| － | － | MC208 | Highly corrosion-resistant piping materials with similar strength to 3003 | Underfloor piping |
- AA: The Aluminum Association (USA)
4000 Series Alloys（Al-Si）
| Alloy designation | Features | Applications to automobiles | ||
|---|---|---|---|---|
| AA* | JIS | UACJ | ||
| 4032 | 4032 | 32S | High heat and abrasion resistance with low coefficient of thermal expansion | Pistons |
| － | － | SC100 | Higher strength than 4032, highly abrasion resistant and forgeable | Power steering housing, compressor scrolls, valve lifters |
| SC300 | SC100 with improved strength | |||
| TF06B TF08 TF10B |
Higher strength than 4032, highly abrasion resistant and forgeable | |||
| － | － | TF12B | Hypereutectic alloy with improved forgeability | Compressor rotors |
- AA: The Aluminum Association (USA)
5000 Series Alloys（Al-Mg）
| Alloy designation | Features | Applications to automobiles | ||
|---|---|---|---|---|
| AA* | JIS | UACJ | ||
| 5182 | 5182 | U-ALight 5S GM145 |
Highly formable and corrosion-resistant alloy for body panels Good deep-drawability and corrosion resistance |
Body panels (inner), heat insulators |
| 5022 | － | U-ALight 5HF GC45 |
High-formability and high-strength alloy for body panels Excellent deep-drawability, and proof stress decreases less in coat-baking than GM145 |
Body panels (outer/inner), heat insulators |
| 5052 | 5052 | 52S | Moderate strength, good corrosion resistance and workability, and high fatigue strength | Meter display panels, AT drums, heat insulators, airbag inflators, covers |
| 5454 | 5454 | D54S | 20% higher strength than 5052 and good corrosion resistance | Wheels, suspension members, oil pans |
| 5083 | 5083 | 183S | Alloy for welded structures The highest strength among all non-heat-treatable alloys |
Tanks, gas cylinders Body panels (superplastic forming) |
| 383S | 183S with improved formability Excellent superplastic properties |
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| 483S NP5/6 |
5083 for extrusion | Lashing rails | ||
| 5182 | 5182 | A82S | Similar strength to 5083, good workability and corrosion resistance | Dust covers, seat frames, air cleaner cases, spring seats |
| － | － | GM47 | Higher strength than 383S and GM145, excellent superplastic formability | Body panels (superplastic forming) |
| 5154 | 5154 | A154S | 5052 with strength improved by 20% Good formability |
Wheels, underbody components, drivetrain components, suspension members |
| A254S | 5052 with strength improved by 20% Good formability. Alloy with stress corrosion cracking resistance |
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| － | － | GC32 | Good formability and stress corrosion cracking resistance | |
| 5110A | 5110 | 257S | High-brightness alloy with similar strength to 3003 Good deep-drawability and corrosion resistance |
Moldings, trims, reflective panels, headlamp bulb shades |
| 5056 | 5056 | 56S | Non-heat-treatable alloy for welded structures with excellent seawater resistance | Brake pistons, fuel delivery pipes, airbag inflators |
- AA: The Aluminum Association (USA)
6000 Series Alloys（Al-Mg-Si）
| Alloy designation | Features | Applications to automobiles | ||
|---|---|---|---|---|
| AA* | JIS | UACJ | ||
| － | － | U-ALight 6S SG712 (T4) |
Highly bake-hardenable alloy for body panels | Body panels (outer/inner) |
| U-ALight 6HF SG712 (T4L) |
High-ductility alloy for body panels Lower bake hardenability than SG712(T4) but high ductility and excellent bulgeability |
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| U-ALight 6HB SG07 |
Highly hemmable alloy for body panels Lower strength and bake hardenability than SG712(T4) but excellent hemmability (bending workability) |
|||
| U-ALight S SM28 |
Highly bake-hardenable alloy for body panels Low-CO2 recycled alloy utilizing aluminum scrap |
Body panels (inner) | ||
| 6063 | 6063 | 63S 163S Y63 |
Typical extrusion alloy Lower strength than 6061 but excellent extrudability. Formable in complex shapes. |
Moldings, seat frames, truck bed gates, sunroof railings, piping, crash boxes |
| 6005C | 6005C | 465S L55 |
Extrusion alloy with medium strength between 6061 and 6063, good corrosion resistance and weldability | Side sills, space frames, engine mount brackets, seat frames, ABS, shock absorber outer cylinders |
| 6061 | 6061 | 61S 161S |
Heat-treatable corrosion-resistant aluminum alloy | ABS, anti-vibration rubber mounts, wheels, propeller shafts, arms, links, airbags, joists, receiver tanks, underbody components, bumper reinforcement, damper bushes, cross car beams, battery peripheral members |
| 561S | Power plant frames | |||
| － | － | SG109 | High-strength alloy, good bending workability and corrosion resistance Hollow-extrudable |
Bumper reinforcement, space frames |
| 6082 | 6082 | SG10 SG710 |
Strength equaling or surpassing 6061, good corrosion resistance | Automobile frames, bumper reinforcement, propeller shafts, arms, links |
| 6110 | － | － | Alloy with even higher strength than 6082 | Bumper reinforcement |
| － | － | SG210 SG310 |
High-strength aluminum alloy for forging | Control arms, wheels |
| － | － | GT209 KS69S |
Lead-free free-cutting alloys | AT valve bodies |
- AA: The Aluminum Association (USA)
7000 Series Alloys（Al-Zn-Mg）
| Alloy designation | Features | Applications to automobiles | ||
|---|---|---|---|---|
| AA* | JIS | UACJ | ||
| 7075 | 7075 | 75S | High-strength alloy, typical alloy for aircraft | Seatbelt hinges, bobbins, retractors |
| 7003 | 7003 | ZK60 K73 |
Extrusion alloy for welded structures Better extrudability than 7204 |
Bumper reinforcement, seat sliders, door impact beams |
| 7204 | 7204 | K70 ZK147 K70Y |
Alloys for welded structures The strength of weld joints recovers to a level close to that of the base material by natural aging. |
Jacks, steering components, crossmembers, steering wheel cores, brake pedals, bumper reinforcement, jacks, motorcycle frames |
| － | － | ZK55 | Higher strength than 7204 Weldable Hollow-extrudable |
Bumper reinforcement, impact beams, motorcycle frames and rims |
| 7046 | － | ZK170 | ||
| － | － | ZK80 | The highest strength among all hollow-extrudable alloys. Not weldable. |
Motorcycle rims |
| 7050 | 7050 | ZG62 | High-strength aluminum alloys | Front forks |
| － | － | ZC88 | ||
- AA: The Aluminum Association (USA)