Aluminium alloy profile and welded combination profile

1)Profile welded combination
Different specifications of several profiles are designed by welded through the friction stir welding, and machined block body structure for carriage.
2)Friction stir welding
Using a special type of stirring head to move with rotating , to generate heat by the friction between the stirring head and the workpiece. The friction heat makes this part of metal in the thermoplastic state, and the welding part is connected to a whole by the pressure of the agitator.

Chalco Aluminum has the Aluminium alloy profile and welded combination profile for heavy-duty freight train,with the alloy 6005 ,6005A,6061,6082 and temper T4,T5,T6.

1)Alloy and temper of Aluminium alloy profile and welded combination profile

Alloy	Temper
6005 ,6005A,6061,6082	T4,T5,T6

2)The chemical component of Aluminium alloy profile and welded combination profile

Alloy

Chemical component(%)

Si

Fe

Cu

Mn

Mg

Cr

Zn

Ti

Zr

Other

Al

Each

Total

6005

0.6-0.9

≤0.35

≤0.10

≤0.10

0.40-0.6

≤0.10

≤0.10

-

-

≤0.10

≤0.05

≤0.15

Remain

6005A

0.5-0.9

≤0.35

≤0.30

≤0.50

0.40-0.7

≤0.30

≤0.20

Mn+Cr:0.12-0.50

≤0.10

－

≤0.05

≤0.15

Remain

6061

0.40-0.8

≤0.7

0.15-0.40

≤0.15

0.8-1.2

0.04-0.35

≤0.25

-

≤0.15

－

≤0.05

≤0.15

Remain

6082

0.7- 1.3

≤0.50

≤0.10

0.40-1.0

0.6-1.2

≤0.25

≤0.20

-

≤0.10

-

≤0.05

≤0.15

Remain

3)Tolerances on dimensions and shape of Aluminium alloy profile and welded combination profile
3-1)Length, width deviation of Profile welded combination

Level of deviation	Allowable deviation of the following length or width. mm
	≤ 120	＞ 120- 400	＞ 400- 1000	＞ 1000- 2000	＞ 2000- 4000	＞ 4000- 8000	＞ 8000- 12000	＞ 12000- 16000	＞ 16000- 20000	＞ 20000
A	+/-1	+/-1	+/-2	+/-3	+/-4	+/-5	+/-6	+/-7	+/-8	+/-9
B	+/-2	+/-2	+/-3	+/-4	+/-6	+/-8	+/-10	+/-12	+/-14	+/-16
C	+/-3	+/-4	+/-6	+/-8	+/-11	+/-14	+/-18	+/-21	+/-24	+/-27
D	+/-4	+/-7	+/-9	+/-12	+/-16	+/-21	+/-27	+/-32	+/-36	+/-40

3-2)Angle allowable deviation of Profile welded combination

Level of deviation	Below reference dimension L corresponding angle allowable deviation.
	≤ 400mm	＞400mm-1000mm	＞1000mm
A	+/-0.33°	+/-0.25°	+/-0.17°
B	+/-0.75°	+/-0.50°	+/-0.33°
C	+/-1.00°	+/-0.75°	+/-0.50°
D	+/-1.50°	+/-1.25°	+/-1.00°

3-3)Permissible deviation of straightness, flatness and parallelism of Profile welded combination

Level of deviation	The below long side of Profile welded combination corresponding straightness, flatness,or short side of Profile welded combination corresponding parallelism (mm)
	≤ 1000	＞ 1000- 2000	＞ 2000- 4000	＞ 4000- 8000	＞ 8000- 12000	＞ 12000- 16000	＞ 16000- 20000	＞ 20000
A	≤1.5	≤2.0	≤3.0	≤4.0	≤5.0	≤6.0	≤7.0	≤8.0
B	≤3.0	≤4.5	≤6.0	≤8.0	≤10.0	≤12.0	≤14.0	≤16.0
C	≤5.5	≤9.0	≤11.0	≤16.0	≤20.0	≤22.0	≤25.0	≤25.0
D	≤9.0	≤14.0	≤18.0	≤26.0	≤32.0	≤36.0	≤40.0	≤40.0

4)Mechanical Property of Aluminium alloy profile and welded combination profile
4-1)Mechanical properties

Alloy	Temper	Wall thickness (mm)		Mechanical Property				BH(Brinell Hardness) HBW
				Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
						A	A50mm
				Not less than
6005 , 6005A	T4	≤25.00		180	90	15	13	50
	T5	≤6.30		250	200	-	7	-
		＞6.30-25.00		250	200	8	7	-
	T6	Solid profile	≤5.00	270	225	-	6	90
			＞5.00- 10.00	260	215	-	6	85
			＞10.00- 25.00	250	200	8	6	85
		Hollow profile	≤5.00	255	215	-	6	85
			＞5.00- 15.00	250	200	8	6	85
			＞15.00- 25.00	250	200	8	-	-
6061	T4	≤25.00		180	110	15	13	65
	T5	≤16.00		240	205	9	7	-
	T6	≤5.00		260	240	-	7	95
		＞5.00- 25.00		260	240	10	8	95
6082	T4	≤25.00		205	110	14	12	70
	T5	≤5.00		270	230	-	6	90
	T6	≤5.00		290	250	-	6	95
		＞5.00- 25.00		310	260	10	8	95

4-2)Weld joint of of Profile welded combination Transverse mechanical properties

Alloy	Temper	Tensile Strength (MPa)	Elongation A50mm (%)
		Not less than
6005 , 6005A	T4	170	10
	T5,T6	200	7
6061	T4	170	13
	T5,T6	200	8
6082	T4	195	13
	T5,T6	230	7