7A09 T6/T74/T73 Aircraft Aerospace Aviation Aluminum Alloy Forgings

Product Description

7A09 T6 T74 T73  Aircraft Aerospace Aviation Aluminum Alloy Forgings

Ultra high strength Aluminum Alloy 7A09 alloy is Al-Zn-Mg-Cu, the strength of 7A09-T6 alloy 7A09 aluminum alloy sheet round bar forgings is the highest, the aviation industry with one of the highest strength Aluminum Alloy deformation, the composition ratio of 7A04 alloy more superior performance, so it has better, get more extensive application in aircraft manufacturing, used in the manufacture of various important components of the force,7A09 aluminum alloy sheet round bar forgings have been widely used in aircraft, transport aircraft, and medium bomber trainer, for the production of the front landing gear, wing, fuselage connection frame, beam, pillar, partitions, floors, main beam joints and tail on the wall, the working cylinder hydraulic system, hydraulic oil tank of the movable rod inside and outside the tube, and other key components. Because of its high strength, the weight reduction effect is good and the safety of the aircraft is improved.

Chemical Composition of 7A09 alloy

Alloy

Si

Fe

Cu

Mn

Mg

Cr

Ni

Zn

Ti

Zr

Others

Al

Each

Total

7A09

0.50

0.50

1.2~2.0

0.15

2.0~3.0

0.16~0.30

-

5.1~6.1

0.10

-

0.05

0.15

Remainder

The semi-finished products of 7A09 alloy are 7A09 aluminum alloy sheet round bar forgings. The alloy has satisfactory fracture toughness in T6 state. The strength and yield strength in T73 over aging state are lower than that in T6 state, but the alloy has excellent stress corrosion resistance and high fracture toughness. The T6 state material has good resistance to exfoliation and corrosion. When the temperature rises, the strength of the alloy decreases, and the long-term use temperature should not exceed 125 ºC.

 

Alloy	Alloy series	Main features	σb  Value/MPa	Working Temperature/ºC
7A09	7075(American)	At present,7A09 aluminum alloy sheet round bar forgings  is one of the most powerful domestic aluminum alloys, which can produce various specifications of plate, bar, profile, thick pipe fittings and forgings. There are four heat treatment states of T6, T73, T76 and T74. The chemical composition is better than that of 7A04 alloy, and its comprehensive properties are better. Under the condition of annealing or solid solution heat treatment, it has good forming properties at normal temperature. The forming performance is lower in the solid solution heat treatment and artificial aging condition, but with the increase of temperature, the forming properties are improved. Resistance welding can be carried out, and it is not suitable for welding.	455~540	<125

 

Physical Property of 7A09 Alloy
Alloy	Type	Temper	δ  Size /mm	σb/MPa	σp 0.2/MPa	δ %		KIC or KC	Standard
7A09	Aluminum sheet	T6	1.0~2.5	LT:480	LT: 410		LT:7	-	GJB 2053-1994
			>2.5~6.5	LT:490	LT: 420		LT:7
		T9	2.0~4.0	LT:520	LT: 460		LT:6
		T62	1.0~2.5	LT:470	LT: 400		LT:7
			>2.5~6.5	LT:480	LT: 410		LT:7
	Aluminum plate	T6	7~10	LT:490	LT: 420		LT:7	-	GJB 2662--1996
		T62	7~10	LT:480	LT: 410		LT:7
		H112--T6	7~10	LT:490	LT: 410		LT:6
			>10~25	LT:490	LT: 410		LT:4
			>25~40	LT:490	LT: 410		LT:3
		T6	35~40	ST 390	-		2
	Pre-streching aluminum plate	BCSYU	>1.0~6.0	LT:540	LT:460		LT:9	-	GJB 1741--1993
			>6.0~10.5	LT:540	LT:470		LT:7
	Extuded aluminum bar	T6	5~22	L:490	L:370		L:7	-	GJB 2054---1994
			>22~150	L:530	L:400		L:6
		H112---T6	>150~250	L:500	L:400		L:4
	High strength aluminum bar	H112---T6	20~100	L:550	L:450		L:6
			>100~150	L:530	L:430		L:6
		T6	20~150	L:550	L:450		L:6
	Extruded aluminum bar	T73	≤38	L:485	L:420		L:7	-	Q/6S 824--1997 Q/S 321--1991
			>38~76	L:475	L:410		L:7
			>76~125	L:470	L:395		L:6
		T74	≤22	L:490	L:375		L:7		Q/6S 1352--1997 Q/S 320--1991
			>22~160	L:530	L:405		L:6
			>160	L:510	L:405		L:5
	Extruded aluminum profile	T6	≤10.0	L:500	L:440		L:6		GJB 2507--1995
			>10.0	L:540	L:460		L:6
		T74	≤10.0	L:500	L:440		L:6	-	Q/6S 1490--1999
	Extruded aluminum tube	T6	25~120	L:530	L:400		L:6	-	GJB 2381--1995
			>120~250	L:510	L:400		L:5
	Die forgings	T6	-	L:530	L:400		L:6
				LT:450	-		LT:4
				ST:425	-		ST:3
	Free forgings	T6	-	L:510	L:420		L:6
				LT:440	-		LT:3
				ST:420	-		ST:2
	Die forgings	T73	-	L:455	L:385		L:7		GJB 1057--1990 GJB 2351--1995
				LT:440	LT:370		LT:4
				ST:425	-		ST:3
	Fee forgings	T73	-	L:455	L:385		L:6
				LT:440	LT:370		LT:4
				ST:420	-		ST:2
	Die forgings	T74	weight≤30kg	L:510	L:430		L:6		GJB 2351--1995
				LT:450	-		LT:4
				ST:425	-		ST:3
			weight>30kg	L:510	L:430		L:6
				LT:450	-		LT:4
				ST:425	-		ST:2
	Die forgings	T74	weight≤30kg	L:490	L:410		L:6
				LT:440	-		LT:3
				ST:420	-		ST:2
			weight>30kg	L:490	L:410		L:5
				LT:440	-		LT:3
				ST:420	-		ST:2

 

Alloy	Temper	Aircraft models	Application parts and typical parts
7A09	Aluminum sheet:  T6,T9,T62 Aluminum plate:T6, T62 Aluminum profile: T6,T74 Aluminum forgings:T6,T74,T73	,Z9, Z10,Z11 etc.,	All kinds of beams, frames, baffles, panels, ribs, joints, skins, front landing gear, actuating cylinder, arm, pillar and so on.

Detailed Photos