7475 T651 T7651 T7351 aluminum alloy sheet

The strength and corrosion resistance of the 7475 alloy are equivalent to those of the 7075 alloy at the same state, while the fracture toughness is higher than that of the existing aluminum alloy with equal strength. Its strength and fracture toughness match best.

The 7475 aluminum alloy sheet is supplied with O, T6 and T76, and the thick plate is supplied with T651, T7651 and T7351. Compared with the state of T76 and T6, the corrosion resistance, especially the anti peeling corrosion resistance, was improved, but the strength was reduced. Compared with the state of T7651 and T651, the resistance to peeling corrosion and stress corrosion resistance is improved, and the fracture toughness is improved, but the strength is reduced.

The technical standard of 7475 alloy not only stipulates the tensile properties at room temperature, but also stipulates the fracture toughness index. The 7475 T651 T7651 T7351 aluminum alloy sheet is mainly used for manufacturing high strength, medium fatigue strength and high fracture toughness structure, such as wing skin, fuselage skin and spacer. Using 7475 alloy can improve the safety, reliability and service life of the aircraft. As 7475 is a high strength aluminum alloy at room temperature, the strength properties of the alloy will be reduced with the increase of the temperature, and the long-term use temperature should not exceed 125 ℃.
7475 T651 T7651 T7351 aluminum alloy sheet has good technological plasticity and superplasticity, and the thin plate parts with complex shape can be superplastic.

Chemical Composition of 7475Alloy

Alloy

Si

Fe

Cu

Mn

Mg

Cr

Ni

Zn

Ti

Zr

Others

Al

Each

Total

7475

0.1

0.12

1.2~1.9

0.06

1.9~2.6

0.18~0.25

~

5.2~6.2

0.06

~

0.05

0.15

Remainder

Tensile mechanical properties of7475 T651 T7651 T7351 aluminum alloy sheet
Technical standard	Type	Temper	Thickness δ/mm	RMm/MPa	RP0.2/MPa	A10/
Q/6S 790	Aluminum sheet	O	1.0～1.6	<250	<140	10
			>1.6	<250	<140	10
			>4.8	<270	<145	10
		T6	1.0～1.6	475	405	9
			>1.6	485	415	9
			>4.8	495	420	9
		T76	1.0～1.6	455	380	9
			>1.6	460	385	9
			>4.8	475	395	9
Q/6S 829	Aluminum sheet	T6	1.0～1.6	475	405	9
			>1.6	485	415	9
			>4.8	495	420	9
Q/6S 792	Aluminum sheet	T6	1.0～1.6	455	380	9
			>1.6	460	385	9
			>4.8	475	395	9

Mechanical properties of 7475 T651 T7651 T7351 aluminum alloy sheet
Standard	Temper	Thicknessδ/mm	Direction	RMm/MPa	RP0.2/MPa	A10/
Q/6S 830	T651	6.5～12.5	L	531	462	9
			LT	538	462	9
		>12.5	L	531	469	8
			LT	538	469	8
		>25.4	L	524	462	6
			LT	531	462	6
Q/6S 831	T7651	6.5～12.7	L	483	414	9
			LT	490	414	9
		>12.7	L	476	407	8
			LT	483	407	8
		>25.4	L	476	407	6
			LT	483	407	6
Q/6S 791	T7351	6.5～38.0	L	469	393	10
			LT	469	393	9
		38.0	L	469	393	10
			LT	469	393	9
			ST	441	365	4
		>38.0	L	462	379	40
			LT	462	379	8
			ST	441	359	4

Alloy	Temper	Aircraft model	Application parts and typical parts
7475	Aluminum sheet： O、T6、T76 Aluminum plate：  T651、T7651、T7351	Y8， Y12，J6，J7，J8 etc.	Panels, beams, frames, wing ribs, joints, etc.

Alloy	Alloy series	Main features	σb  Value/MPa	Work Temperature/℃
7475	7075 series	The 7475 aluminum alloy sheet is supplied with O, T6 and T76, and the thick plate is supplied with T651, T7651 and T7351. Compared with the state of T76 and T6, the corrosion resistance, especially the anti peeling corrosion resistance, was improved, but the strength was reduced. Compared with the state of T7651 and T651, the resistance to peeling corrosion and stress corrosion resistance is improved, and the fracture toughness is improved, but the strength is reduced.	448～538	<125