6000 series aluminum alloy sheet for body panels - Aluminum Automobile Technology

Special features

Alloy sheet for body panels features excellent formability and displays high strength after coat-baking.
High BH type alloys are recommended where dent resistance is regarded as critical.
High formability type alloys are recommended where the formability is regarded as critical.

Bake hardenability:
The property to increase the strength of a car’s body surface during the coat baking (electrodeposition coating) process, although the material is soft at the time of press forging.

Properties

Mechanical properties

Types and mechanical properties (Sheet thickness: 1mm)

Alloy designation	AA*¹	Tensile strength (N/mm²)	Proof stress (N/mm²)	Elongation (%)	Proof stress (after baking)*² (N/mm²)	Remarks
SG712-T4	（6116）	240	130	28	205	High BH type
SG712-T4 High formability type	（6116）	245	135	30	170	High formability type
TM30-T4	（6005）	210	110	27	190	High hemmability type
TM66-T4	（6111）	240	115	29	210	High formability type, High BH type

*1 AA: The Aluminum Association (U.S.A.); numbers show the equivalent alloys.
*2 Baking conditions: After applying 2% pre-distortion, test value after 20 minutes at 170°C.

Formability

(Sheet thickness: 1mm)

Alloy designation	Formability	Hemmability	Corrosion resistance	BH effect	Ridging resistance
SG712-T4	〇	〇	〇	〇	〇
SG712-T4 High formability type	〇+	〇	〇	△	〇
TM30-T4	〇	〇+	〇	〇	〇
TM66-T4	〇++	〇	△	〇	〇

※ standard △ ⇒ 〇 ⇒ 〇+ ⇒ 〇++

Properties

Hemmability

Bake hardenability

Alloy designation	2% pre-distortion + 20min at 170°C
Alloy designation	Tensile strength (N/mm²)	Proof stress (N/mm²)	Elongation (%)
SG712-T4	285	205	23
SG712-T4 High formability type	275	170	23
TM30-T4	270	190	22
TM66-T4	285	210	24