Technical Specification

Wrought alloys

The International Alloy Designation System is the most widely accepted naming scheme for wrought alloys. Each alloy is given a four-digit number where the first digit indicates the major alloying elements.

Wrought alloys : Equivalent Designations

INDIA		U.S.A	BRITAIN	CANADA	GERMANY	RUSSIA	I.S.O.	FRENCH
NEW I.S.	OLD I.S.	(A.A.)	(B.S.)	CANADA	(DIN)	RUSSIA	I.S.O.	ND
19501	1E	1050(E.C)	1E	C 1 S	E-AI 99.5	–	–	–
19500	1B	1050	1B	1S	A-99.5	–	AL-99.5	1050A
19600	–	1060	–	–	–	–	–	–
19700	–	1070	–	–	Al-99.7	–	Al-99.7	–
19800	1A	1080	1A	–	–	–	Al-99.8	–
19000	1C	1100	1C	2S	A199.0	AD	Al-99.0	1200
–	–	2011	FC1	28S	Al-Cu-Bi-Pb	–	Al-Cu-6Bi Pb	2011
24345	H15	2014	H15	B26S	Al-Cu-Si	AK	Al-Cu-4Si-Mg	–
24534	H14	2017	H14	17S/16S	–	D1	Al-Cu-4Mg Si	–
–	–	2024	–	24S	Al-Cu-Mg.2	–	Al-Cu-4Mg 1	2024
31000	N3	3003	N3	3S	Al-Mn	A-Mn	Al-Mn 1	3003
43000	N21	4043	N21	33S	AI-Si-5	AK	Al-Si5	4043
46000	N2	4047	N21	35S	–	–	–	–
51000	–	5005	–	B57S	–	–	AI-Mg-1	–
52000	N4	5052	N4	M57S	Al-Mg.2	A-Mg	Al-Mg-2.5	5051
53000	N5	5086	N5	54S	–	A.Mg-3	AI-Mg-4	–
54300	N8	5083	N8	D54S	Al-Mg-4.5 Mn	–	Al-Mg-4.5 Mn	5083
55000	N6	5056	N6	A56S	Al-Mg.5	–	Al-Mg.5	5356
65032	H2O	6061	H2O	65S	Al-Mg-Si Cu	–	AI-Mg-1Si Cu	–
63400	H9	6063	H9	50S	Al-Mg-Si 0.5	–	Al-Mg-Si	–
64430	H30	6351	H30	B51S	Al-Mg-Si 1	AV	AI-Si-1 Mg	6081
64423	H11	6066	H11	C62S	–	–	–	–
62400	–	6005	–	C515	–	–	–	–
63401	91E	6101	91E	D5OS	E.AI.Mg.Si 0.5	–	–	–
64401	–	6201	–	–	–	–	–	–
74530	–	7039	–	D74S	Al-Zn-Mg. 1	–	–	3004
–	–	7075	DTD 5124	75S	Al-Zn-Mg Cu 1.5	–	Al-Zn 6 Mg Cu	7075

Wrought alloys: Chemical composition limits (percent)

Alloy		Equivalent	Copper		Magnesium		Silicon		Iron	Manganese		* Others	Remarks
(ISS)		alloy (AA)	Copper		Magnesium		Silicon		Iron	Manganese		(Total)	Remarks
Old	New	U.S.A.	Min	Max	Min	Max	Min	Max	Max	Min	Max	Max
1 C	19000	1100	–	0.10	–	–	–	0.5	0.6	–	0.1	0.1	Aluminum 99.0%Min
		1200	–	0.05	–	–	Si+Fe1.0			–	0.05	0.1	Aluminum 99.0%Min
1 B	19500	1050	–	0.05	–	–	–	0.25	0.4	–	0.05	0.1	Aluminum 99.5%Min
1E	19501	–	–	0.04	–	–	–	0.15	0.35	–	0.03	0.1	Aluminum 99.5%Min
–	–	1350	–	0.05	–	–	–	0.10	0.40	–	0.01	0.1	Aluminum 99.5%Min
–	19600	1060	–	0.05	–	–	–	0.25	0.35	–	0.03	0.1	Aluminum 99.6%Min
–	19700	1070	-	0.03	–	–	–	0.2	0.25	–	0.03	0.1	Aluminum 99.7%Min
H15	24345	2014	3.8	5.0	0.2	0.8	0.5	1.2	0.7	0.3	1.2	0.5	–
H14	24534	2017	3.5	4.7	0.4	1.2	0.2	0.7	0.7	0.4	1.2	0.5	–
N3	31000	3003	–	0.1	–	0.1	–	0.6	0.7	1.0	1.5	0.4	–
N21	43000	4043	–	0.1	–	0.2	4.5	6.0	0.6	–	0.5	0.2	–
N2	46000	4047	–	0.1	–	0.2	10.0	13.0	0.6	–	0.5	0.2	–
N4	52000	5052	–	0.1	1.7	2.6	–	0.6	0.5	–	0.5	0.4	Cr + Mn = 0.5
N5	53000	5086	–	0.1	2.8	4.0	–	0.6	0.5	–	0.5	0.4	Cr + Mn = 0.5
N6	55000	5056	–	0.1	4.5	5.6	–	0.6	0.7	–	0.5	0.4	Chromium upto 0.25
N8	54300	5083	–	0.1	4.0	4.9	–	0.4	0.7	0.5	1.0	0.4	Chromium upto 0.25
H2O	65032	–	0.15	0.4	0.7	1.2	0.4	0.8	0.7	0.2	0.8	0.4	**Cr =0.15-0.35
%
–	–	6061	0.15	0.4	0.8	1.2	0.4	0.8	0.7	–	0.15	0.4	Chromium 0.04 to 0.35
H9	63400	6063	–	0.1	0.4	0.9	0.3	0.7	0.6	–	0.3	0.4	–
–	–	6066	0.7	1.2	0.8	1.4	0.9	1.8	0.7	0.6	1.1	0.4	–
–	64423	–	0.5	1.0	0.5	1.3	0.7	1.3	0.8	–	1.0	–	–
91E	63401	6101	–	0.05	0.4	0.9	0.3	0.7	0.5	–	0.03	0.1	–
–	64401	6201	–	0.1	0.6	0.9	0.5	0.9	0.5	–	0.03	0.1	–
H30	64430	6351	–	0.1	0.4	1.2	0.6	1.3	0.6	0.4	1.0	0.3	–
		6082	–	0.1	0.6	1.2	0.7	1.3	0.5	0.4	1.0	0.3	Chromium upto 0.25
–	74530	7039	–	0.2	1.0	1.5	–	0.4	0.7	0.2	0.7	0.4	Zinc 4.0 – 5.0%
–	–	7075	1.2	2.0	2.1	2.9	–	0.5	0.5	–	0.3	0.2	Zinc (5.1-6.1)% & Chromium (0.18-0.28%);

*Titanium and/or other grain refining Elements
**Either Mn or Cr shall be present

Wrought alloys: Mechanical properties

Non - Heat Treatable Alloys
Alloy AA Old (ISS) New (ISS)	Temper	Ultimate Tensile Strength Kg/mm²	0.2% Proof Stress Kg/mm²	Elongation On 50 mm GL
Alloy AA Old (ISS) New (ISS)	Temper	Min. Max.	0.2% Proof Stress Kg/mm²	Elongation On 50 mm GL
1100[1C][19000]	O	- 11.0	-	25
1050[1B][19500]	O	-10.0	-	25
1060[19600]	O	-9.5	-	25
1070[19700]	O	-9.5	-	25
4043[N21][43000]	O	-13.0	-	18
4047[N2] [46000]	O	-15.0	-	12
5052[N4] [52000]	O	-24.5	-	18
5086[N5] [53000]	O	-26.5	-	16
5056[N6] [55000]	O	-34.5	-	15
5083[N8] [54300]	O	-35.5	-	13

Heat Treatable Alloys
2014 [H15] [24345]	T4[W] T6 [WP]	39 49	- -	24.0 43.0	10 6
2017 [H14] [24534]	T4[W]	39	-	24.0	10
6063 [H9] [63400]	T4[W] T6 [WP]	14 19	- -	8.0 15.5	14 7
6061[H20] [65032]	M or O T4[W] T6 [WP]	- 19 28.5	15.0 - -	- 11.5 24.0	16 14 7
6351[H30] [64430]	M or O T4[W] T6 [WP]	- 19 31.5	15.0 - -	- 12.0 27.5	16 14 7
6066	O T4[W] T6 [WP]	- 28 35	20.5 - -	- 17.5 31.5	16 14 7
6101[91E] [63401]	T4[W] T6 [WP]	14 20.5	- -	8.0 17.0	12 10
6201 [64401]	T4[W] T8 [WDP]	16 32	- -	7.0 -	14 3
7039 [74530]	T4[W] T6 [WP]	28 31.5	- -	23.5 26.5	9 7
7075	T6 [WP]	54	-	46.5	6

Properties indicated herein are typical properties and are given for information only. However properties of all the profiles in specific alloy shall be as per I.S. Specification.

The temper designation follows the cast or wrought designation number with a dash, a letter, and potentially a one to three digit number.e.g.6061-T6.The definitions for the tempers are:
- F As fabricated
- H Strain hardened (cold worked) with or without thermal treatment
- H1 Strain hardened without thermal treatment
-H2 Strain hardened and partially annealed
- H3 Strain hardened and stabilized by low temperature heating
Second digit
A second digit denotes the degree of hardness
- HX2 =1/4 hard
- HX4 = 1/2 hard
- HX6 = 3/4 hard
- HX8 = full hard
- HX9 = extra hard
- O Full soft (annealed)
- T Heat treated to produce stable tempers
-T1 Cooled from hot working and naturally aged (at room temperature)
- T2 Cooled from hot working, cold-worked. and naturally aged
- T3 Solution heat treated and cold worked
- T4 Solution heat treated and naturally aged
- T5 Cooled from hot working and artificially aged (at elevated temperature)
- T51 Stress relieved by stretching
-T510 No further straightening after stretching
-T511 Minor straightening after stretching
-T52 Stress relieved by thermal treatment
-T6 Solution heat treated and artificially aged
-T7 Solution heat treated and stabilized
-T8 Solution heat treated cold worked. and artificially aged
-T9 Solution heat treated. artificially aged. and cold worked
- T10 Cooled from hot working.cold-worked and artificially aged
-W Solution heat treated only.
Note: -W is a relatively soft intermediary designation that applies after heat treat and before aging is complex .The -W condition can be extended at extremely Iow temperatures but not indefinitely and depending on the material will typically last no longer than 15 minutes at ambient temperature.

Wrought alloys: Welding properties

Alloy & Temper	Gas	Arc with inert Gas	Arc with inert Flux	Resist. Welding	Pressure Welding	Brazing	Soldering		Filler
Alloy & Temper	Gas	Arc with inert Gas	Arc with inert Flux	Resist. Welding	Pressure Welding	Brazing	Low Temp	High Temp	Metal (3)+
1050 (O)	A	A	A	B	A	A	A	A	1260
1100 (O)	A	A	A	B	A	A	A	A	1100
2014 (O)	D	C	C	B	C	D	D	D	4145
2017 (T4)	D	C	C	B	D	D	D	D	4145
(T6)	D	C	C	B	D	D	D	D	4145
3003 (O)	A	A	A	B	A	A	A	A	1100
5005 (O)	A	A	A	B	A	B	B	A	4043
5052 (O)	A	A	A	B	B	C	C	C	5356
5086 (O)	C	A	A	B	C	D	D	D	5356
6061 (O)	A	A	A	B	A	A	B	A	4043
(T4)	A	A	A	A	B	A	B	A	4043
(T6)	A	A	A	A	B	A	B	A	4043
6063 (T6)	A	A	A	A	B	A	B	A	4043
6101 (T6)	A	A	A	A	B	A	B	A	4043
6201 (T81)	A	A	A	A	B	A	B	A	4043
7039 (T6)	D	C	C	A	C	D	C	C	7039

1. For general purpose only. For specialised applications, e.g. pressure vessels anodised item etc., special process should be used.
2. Joining ratings A,B,C & D are relative ratings in order of merit.

A Readily weldable.
B Special techniques and close control of procedure are required.
C Limited weldability due to crack sensitivity, loss in strength and or loss in resistance to corrosion.
D Not recommended.
3. Filler metals for general purpose only. For Specialised applications requiring high strength ductility, colour match after anodising etc.special filler metals are recommended.

Wrought Alloys: Surface Finishing (Suitability)

Suitable for
Alloy	Protective Anodising	Anodising & Dyeing	Bright Anodising	Plating	Vitreousea Immelgin
1050/1070	E	E	V	V	G
1100	V	V	G	V	G
2014/2017	M	M(D)	U	V	U
3003	G	G	M	G	V
4043	G	G(D)	U	O	G
5005	V	V	V	O	U
5052	V	V	G-V	O	U
5086/5056	V	V	G	O	U
6061	G	G	M	O	O
6063	V	V	G-V	O	O
6066	M	M(D)	U	V	U
6101	V	V	G-V	O	O
6351	G	G	M	O	O

E Excellent
V Very good
G Good
M Moderate
U Unsuitable
D Only Suitable for dark colours
O Modified technique is essential and some initial difficulties may occur

Standard Manufacturing Tolerances

The Standard manufacturing tolerance given here are applicable to the average shapes. Wider tolerance may be required for special alloys. Tolerances stricter than standard shall be subjected to special enquiry.

Round Bars/Rods : Diameter Tolerance

Specified Diameter mm		Tolerance (mm)
		Class A		Class B
		+	_		±
	Upto12.0	0.03	0.07		0.20
Over 12.0	Upto25.0	0.05	0.10		0.25
Over 25.0	Upto40.0	0.07	0.13		0.30
Over 40.0	Upto50.0	0.13	0.13		0.38
Over 50.0	Upto56.0	0.15	0.15		0.46
Over 56.0	Upto71.0	0.2	0.20		0.53
Over 71.0	Upto80.0	0.25	0.25		0.61
Over 80.0		0.5%	0.5%		1%

Notes:
Class ‘A’ is for drawn rods.
Class ‘B’ is normal tolerance for extruded rods.

Solid Sections: Width Tolerance

Specified Width or Width across flats (in mm)	Tolerance mm ±
4	0.18
5	0.20
6	0.20
8	0.23
10	0.23
12	0.25
16	0.28
20	0.30
25	0.30
32	0.38
40	0.46
50	0.46
60	0.53
80	0.69
100	0.69
120	0.76
160	1.02
200	1.14
250	1.40

Notes:
For intermediate size, take tolerance for the next higher value.

Specified Width mm	Depth of flange or leg (in mm)
	6.5 to 16.0	16.1 to 32.0	32.1 to 64.0	64.1 to 150.0
	Width Tolerance mm ±
Up to 6.0	0.30	–	–	–
6.1 to 12.0	0.35	0.40	0.45	–
12.1 to 20.0	0.40	0.45	0.50	–
20.1 to 25.0	0.45	0.50	0.55	0.65
25.1 to 38.0	0.50	0.55	0.65	0.75
38.1 to 50.0	0.60	0.70	0.80	0.90
50.1 to 100.0	0.80	0.90	1.20	1.50
100.1 to 150.0	1.10	1.30	1.70	2.00
150.1 to 200.0	1.50	1.60	2.10	2.50
200.1 to 250.0	1.70	1.90	2.70	3.00

Notes: 1:Tolerance on either internal or external gap (between flanges or legs) can be guaranteed depending on requirements.
2:These tolerances are applicable to channels, I-beam and other such sections where there are both opened and closed ends.

Solid sections : Thickness Tolerance

Specified Thickness**	Width of Section (in mm)
mm	12	16	20	25	32	40	50	63	80	100	125	160	200	250	320
1.2	0.20	0.20	0.20	0.20	0.20	*	*	*	*	*	*	*	*	*	*
1.6	0.18	0.20	0.20	0.20	0.20	*	*	*	*	*	*	*	*	*	*
2.0	0.18	0.20	0.20	0.20	0.20	0.23	0.25	0.28	0.30	0.33	0.36	0.38	0.41	0.46	*
2.5	0.18	0.20	0.20	0.20	0.20	0.23	0.25	0.28	0.30	0.33	0.36	0.38	0.41	0.46	*
3.2	0.18	0.20	0.20	0.20	0.23	0.25	0.28	0.30	0.33	0.36	0.38	0.41	0.43	0.48	*
4.0	0.20	0.23	0.23	0.23	0.25	0.28	0.30	0.33	0.36	0.38	0.43	0.43	0.46	0.51	*
5.0	0.20	0.23	0.23	0.23	0.25	0.28	0.30	0.33	0.36	0.38	0.41	0.43	0.46	0.51	*
6.0	0.20	0.23	0.23	0.23	0.25	0.28	0.30	0.33	0.36	0.41	0.46	0.51	0.56	0.66	*
8.0	0.23	0.25	0.25	0.25	0.28	0.30	0.33	0.36	0.38	0.43	0.48	0.53	0.58	0.71	*
10.0	0.23	0.25	0.25	0.25	0.28	0.30	0.33	0.36	0.38	0.43	0.48	0.53	0.58	0.71	*
12.0	0.25	0.28	0.28	0.28	0.30	0.33	0.36	0.38	0.41	0.46	0.48	0.53	0.58	0.74	0.97
16.0	0.28	0.30	0.30	0.30	0.33	0.36	0.38	0.41	0.43	0.48	0.51	0.56	0.61	0.76	1.02
20.0	–	0.30	0.30	0.30	0.36	0.38	0.41	0.43	0.46	0.51	0.53	0.61	0.69	0.79	1.04
25.0	–	0.30	0.30	0.30	0.36	0.38	0.41	0.43	0.46	0.51	0.53	0.61	0.69	0.79	1.04
32.0	–	–	–	–	0.38	0.41	0.43	0.46	0.48	0.53	0.56	0.66	0.74	–	–
40.0	–	–	–	–	–	0.46	.0.48	0.51	0.53	0.56	0.61	0.71	0.79	–	–
50.0	–	–	–	–	–	–	0.53	0.56	0.58	0.61	0.66	0.76	0.84	–	–
63.0	–	–	–	–	–	–	–	0.61	0.64	0.66	0.71	0.81	0.89	–	–
80.0	–	–	–	–	–	–	–	–	0.69	0.71	0.74	0.86	0.94	–	–
100.0	–	–	–	–	–	–	–	–	–	0.76	0.79	0.91	0.99	–	–
125.0	–	–	–	–	–	–	–	–	–	–	0.89	0.97	1.04	–	–

* To be regarded as special sections.
** For intermediate size, take tolerance for the next higher value.

Round Tubes : Wall Thickness Tolerance

Specified Wall Thickness (mm)	Tolerane (mm)
Specified Wall Thickness (mm)	Class 1 ±	Class 2 ±
Up to 1.2	0.30	–
1.60	0.30	–
1.80	0.30	–
2.00	0.30.	–
2.24	0.30	–
2.50	0.33	–
2.80	0.36	–
3.15	0.40	0.90
3.55	0.43	0.94
4.00	0.48	0.97
4.50	0.51	1.02
5.00	0.56	1.07
5.50	0.61	1.12
6.30	0.67	1.18
7.10	0.76	1.27
8.00	0.97	1.47
9.00	1.10	1.60
10.00	1.22	1.73
11.20	1.28	1.79
12.50	1.35	1.85

Notes:
1. Tubes with wall thickness intermediate between standard sizes will have the tolerance of the next higher wall thickness.
2. Tolerance on standard wall thickness above 12.50 mm may be as agreed to between the purchaser and the supplier.
3. For Al-Zn-Mg, Al-Mg and Al-Cu alloys, class 2 tolerances shall apply.
4. For Al, Al-Mn and Al-Mg-Si alloys, class 1 tolerances .

Round Tubes: Diameter Tolerance

Specified Diameter Outside or inside mm	Diameter Tolerance (mm ±)	Ovality (mm ±)
From 9 upto 18	0.25	0.50
Over 18 upto 30	0.3	0.60
Over 30 upto 40	0.36	0.80
Over 40 upto 50	0.45	0.90
Over 50 upto 60	0.54	1.00
Over 60 upto 80	0.6	1.30
Over 80	1% of dia	2.5% of dia

Notes :
1. When outside diameter, inside diameter and wall thickness are all specified, standard tolerances are applicable to any two of these dimensions, but not to all three.
2. Mean diameter is the average of two diameter measurement taken at right angles to each other at any point along the length in other words, mean diameter is 1/2 (AA + BB).
3. Ovalness tolerance is not applicable for annealed temper or if the wall thickness is less than 2.5% of the outside diameter.

Hollow Sections: Wall Thickness Tolerance

Wall Thickness (mm)		Width or overall dimensions (mm)
		Over	10.0	20.0	30.0	40.0	50.0	60.0	80.0	100.0	120.0	140.0	160.0	180.0	200.0	225.0
		Up to	20.0	33.0	40.0	50.0	60.0	80.0	100.0	120.0	140.0	160.0	180.0	200.0	225.0	250.0
Class B
Over	up to
1.0	1.5		0.28	0.28	0.28	0.30	–	–	–	–	–	–	–	–	–	–
1.5	2.0		0.30	0.33	0.33	0.36	–	–	–	–	–	–	–	–	–	–
2.0	2.5		0.33	0.33	0.36	0.38	0.43	0.46	–	–	–	–	–	–	–	–
2.5	3.0		0.41	0.43	0.46	0.48	0.51	0.53	0.56	–	–	–	–	–	–	–
3.0	4.0		0.53	0.56	0.58	0.61	0.64	0.66	0.69	0.71	0.74	–	–	–	–	–
4.0	5.0		–	0.71	0.74	0.76	0.79	0.81	0.84	0.86	0.89	0.91	0.94	1.02	–	–
5.0	6.0		–	–	0.97	0.99	1.02	1.04	1.07	1.09	1.12	1.14	1.17	1.19	1.22	1.24
6.0	8.0		–	–	–	1.22	1.24	1.27	1.30	1.32	1.35	1.37	1.40	1.42	1.45	1.47
8.0	10.0		–	–	–	–	1.47	1.50	1.52	1.55	1.57	1.60	1.63	1.65	1.68	1.70
10.0	12.0		–	–	–	–	1.73	1.75	1.78	1.8	1.83	1.85	1.88	1.90	1.93	1.96
12.0	16.0		–	–	–	–	–	1.98	2.00	2.03	2.06	2.08	2.11	2.13	2.16	2.18
16.0	20.0		–	–	–	–	–	–	2.24	2.26	2.29	2.31	2.34	2.36	2.39	2.41
20.0	25.0		–	–	–	–	–	–	2.49	2.51	2.54	2.57	2.59	2.62	2.64	2.67
Class A
1.5	2.0		0.28	0.30	0.30	0.33	–	–	–	–	–	–	–	–	–	–
2.0	2.5		0.30	0.30	0.33	0.36	0.41	0.43	–	–	–	–	–	–	–	–
2.5	3.0		0.30	0.30	0.36	0.38	0.43	0.46	0.51	–	–	–	–	–	–	–
3.0	4.0		0.33	0.36	0.38	0.41	0.46	0.51	0.56	0.61	0.69	–	–	–	–	–
4.0	5.0		–	0.41	0.43	0.46	0.51	0.56	0.61	0.69	0.76	0.84	0.91	0.99	–	–
5.0	6.0		–	–	0.46	0.51	0.56	0.61	0.69	0.76	0.84	0.91	0.99	1.07	–	–
6.0	8.0		–	–	–	0.56	0.61	0.69	0.76	0.84	0.91	0.99	1.07	1.14	–	–
8.0	10.0		–	–	–	–	0.69	0.76	0.84	0.91	0.99	1.07	1.14	1.22	–	–
10.0	12.0		–	–	–	–	0.76	0.84	0.91	0.99	1.07	1.14	1.22	1.30	–	–
12.0	16.0		–	–	–	–	–	0.91	0.99	1.07	1.14	1.22	1.30	1.37	–	–
16.0	20.0		–	–	–	–	–	–	1.07	1.14	1.22	1.30	1.37	1.45	–	–

Notes:
1. These tolerances are applicable to hollow sections other than round tubes.
2. For non-heat-treatable alloys, these tolerances are applicable when wall thickness of these section is at least 1.5mm or 1/32 of overall width, whichever is greater. For heat-treated alloys, these tolerances are applicable when wall thickness is at least 1.5mm or 1/24 of overall width, whichever is greater.
3. Unless otherwise specified, class B tolerances will be applicable.
4. For high-magnesium non-heat-treatable alloys (5052,5056,5083,5086), an extra tolerance of 50% shall be allowed.