GARMCO - ALLOYS

Note: Garmco 3103 products are routinely produced to BS specifications, but other National Standards may be met on request.

Typical Uses: General sheet metal work requiring greater strength than is provided by 1000 series alloys; profiled building sheet (roofing and siding); insulation panels; holloware; food and chemical handling and storage equipment.

Note:Special grades are available for porcelain enamelling, deep drawing and spinning; general purpose grades should not be used for these operations. 3103 is not recommended for decorative or architectural anodising; anodising should be for surface protection only

(B) : Blanked only. Sizes not inside bracket refer to sheared circle sizes available.

Mechanical Properties ( To BS 1470 Standards)

Temper	Gauge Range, mm		Ultimate Tensile Strength N/mm�			Yield Strength N/mm�		Elongation in 50 mm, %		Ult Shear Strength, N/mm�
	Over	Up to	Minimum	Typical	Maximum	Minimum	Typical	Minimum	Typical @ 1.6mm	Typical
O	0.29	0.50	90	105	130		40	(2)		76
	0.50	0.80	90	105	130		40	20		76
	0.80	1.30	90	105	130		40	23		76
	1.30	2.60	90	105	130		40	24	32	76
	2.60	3.00	90	105	130		40	24		76
	3.00	3.20	90	105	130		40	25		76
H12	0.29	0.50	120	130	155		115	(2)
	0.50	0.80	120	130	155		115	5
	0.80	1.30	120	130	155		115	6
	1.30	2.60	120	130	155		115	7	11
	2.60	3.00	120	130	155		115	9
	3.00	3.20	120	130	155		115	9
H14	0.29	0.50	140	155	175		145	(2)
	0.50	0.80	140	155	175		145	3
	0.80	1.30	140	155	175		145	4
	1.30	2.60	140	155	175		145	5	7
	2.60	3.00	140	155	175		145	6
	3.00	3.20	140	155	175		145	7
H16	0.29	0.50	160	175	195		160	(2)
	0.50	0.80	160	175	195		160	2
	0.80	1.30	160	175	195		160	3
	1.30	2.60	160	175	195		160	4	6
	2.60	3.00	160	175	195		160	4
	3.00	3.20	160	175	195		160	4
H18	0.29	0.50	175	210			180	(2)		110
	0.50	0.80	175	210			180	2		110
	0.80	1.30	175	210			180	3		110
	1.30	2.60	175	210			180	4	5	110
	2.60	3.00	175	210			180	4		110

Note: 1)An alternative method of production, designated H2X, may be used instead of the H1X routes subject to agreement between supplier and purchaser and providing that the same specified properties are achieved.

2)BS 1470 does not specify minimum elongation for gauges under 0.50mm. The limit to be applied shall be subject to agreement between supplier and purchaser.

Modulus of Elasticity: 69,000 MPa

Bend Radii: Minimum recommended internal bend radii for 90� cold bends at right angle to the rolling direction.

Thickness
Temper	0.4mm	0.8mm	1.6mm	3.2mm
O	0	0	0	0
H12, H22	0	0	0	0.5 t
H14, H24	0	0	0	1 t
H16, H26	0.5 t	1 t	1 t	1.5 t
H18	1 t	1.5 t	2 t	2.5 t

t = Thickness

Welding: 3103 is readily welded by the TIG and MIG processes. Commonly used filler alloys are 4043 and 1100. 4043 gives a greater weld strength, but if the assembly is to be anodized, 1100 filler metal will give a closer color match.

3103 may also be gas welded or resistance welded, but the resulting joints are not as strong or as corrosion resistant as the inert gas welded joints. Moreover, gas welding could result in excessive heat distortion and, in thinner gauges, may burn through. It is essential that all traces of flux used in welding or brazing are removed by scrubbing with hot water upon completion.

Annealing: 415�C � 5�C, until all parts have reached the annealing temperature.

Weight Calculation :Weight per square metre in kilogrammes: 2.73 x thickness in mm.