Metallurgical specifications of Strips of Aluminum alloy 2024

General Characteristics
The 2024 alloy is thought of as the “aircraft” alloy given its strength. This alloy has only fair corrosion resistance but good machinability. Lends itself only to resistance welding as a hot joining process and is not recommended for brazing or soldering. In the annealed state, it has good workability but is only fair-to-poor in tempers. Typical end uses are aircraft skins and cowls as well as truck and aircraft structural parts.
Typical Chemical Composition

Others

Weight % Si Fe Cu Mn Mg Cr Zn Ti Each Total Aluminium

Minimum — — 3.8 0.3 1.2 — — — — — Remainder

Maximum 0.5 0.5 4.9 0.9 1.8 0.10 0.25 0.15 0.05 0.15

	Others
Minimum	—	—	3.8	0.3	1.2	—	—	—	—	—	Remainder
Maximum	0.5	0.5	4.9	0.9	1.8	0.10	0.25	0.15	0.05	0.15

Characteristics		English	Metric
Nominal density (68°F/20°C)		0.100 lbs/in³	2.77 mg/m³
Melting range		935°F- 1180°F	502°C- 638°C
Specific heat (212 °F/100°C)		0.209 BTU/lb – °F	875 J/KG- °K
Coefficient of thermal expansion	Linear 68°F – 212°F 20°C – 100°C	12.7 micro in/in- °F	22.9 micro in/in- °K
Coefficient of thermal expansion	Volumetric 68 ºF / 20 ºC	3.67 x 10^-5 in .³/in.³ – ºF	66 x 10-6 m³/m³ – ºK
Thermal conductivity (68°F/20°C)	O Temper	110 BTU/ft- hr – °F	190 W/m – °K
	T4, T351	69 BTU/ft- hr – °F	120 W/m – °K
	T6, T851	88 BTU/ft- hr – °F	151 W/m – °K
Electrical conductivity (68°F/20°C)	Equal Volume	O Temper	50% IACS
		T4, T351	30% IACS
		T6, T851	38% IACS
	Equal Weight	O Temper	160% IACS
		T4, T351	96% IACS
		T6, T851	122% IACS

Temper	Tensile					Hardness	Shear		Fatigue		Modulus
	Ultimate		Yield		Elongation/ 4D	Brinell 500 kg 10 mm	Ultimate shearing strength		Endurance limit-R.R.Moore type		Modulus of elasticity
	KSI	MPa	KSI	MPa	1/16 In. Thick Speciman		KSI	MPa	KSI	MPa	KSIx10³	Gpa
O	31.9	220	13.8	95.0	12	47	18	124	13	89.6	10.6	73.1
T-4, T-351	58-61	400-425	37.7	260	20	120	41	283	20	138	10.6	73.1
T-6	63.1-63.8	435-440	50	345	5	125	41	283	18	124	10.6	73.1
T-851	66	455	58	400	5	128	42.9	296	17	117	10.6	73.1

Aluminum Alloy 2024 Sales:+972 4 618 2000

General Characteristics
The 2024 alloy is thought of as the “aircraft” alloy given its strength. This alloy has only fair corrosion resistance but good machinability. Lends itself only to resistance welding as a hot joining process and is not recommended for brazing or soldering. In the annealed state, it has good workability but is only fair-to-poor in tempers. Typical end uses are aircraft skins and cowls as well as truck and aircraft structural parts.
Typical Chemical Composition

Others

Weight % Si Fe Cu Mn Mg Cr Zn Ti Each Total Aluminium

Minimum — — 3.8 0.3 1.2 — — — — — Remainder

Maximum 0.5 0.5 4.9 0.9 1.8 0.10 0.25 0.15 0.05 0.15

	Others
Minimum	—	—	3.8	0.3	1.2	—	—	—	—	—	Remainder
Maximum	0.5	0.5	4.9	0.9	1.8	0.10	0.25	0.15	0.05	0.15

Characteristics		English	Metric
Nominal density (68°F/20°C)		0.100 lbs/in³	2.77 mg/m³
Melting range		935°F- 1180°F	502°C- 638°C
Specific heat (212 °F/100°C)		0.209 BTU/lb – °F	875 J/KG- °K
Coefficient of thermal expansion	Linear 68°F – 212°F 20°C – 100°C	12.7 micro in/in- °F	22.9 micro in/in- °K
Coefficient of thermal expansion	Volumetric 68 ºF / 20 ºC	3.67 x 10^-5 in .³/in.³ – ºF	66 x 10-6 m³/m³ – ºK
Thermal conductivity (68°F/20°C)	O Temper	110 BTU/ft- hr – °F	190 W/m – °K
	T4, T351	69 BTU/ft- hr – °F	120 W/m – °K
	T6, T851	88 BTU/ft- hr – °F	151 W/m – °K
Electrical conductivity (68°F/20°C)	Equal Volume	O Temper	50% IACS
		T4, T351	30% IACS
		T6, T851	38% IACS
	Equal Weight	O Temper	160% IACS
		T4, T351	96% IACS
		T6, T851	122% IACS

Temper	Tensile					Hardness	Shear		Fatigue		Modulus
	Ultimate		Yield		Elongation/ 4D	Brinell 500 kg 10 mm	Ultimate shearing strength		Endurance limit-R.R.Moore type		Modulus of elasticity
	KSI	MPa	KSI	MPa	1/16 In. Thick Speciman		KSI	MPa	KSI	MPa	KSIx10³	Gpa
O	31.9	220	13.8	95.0	12	47	18	124	13	89.6	10.6	73.1
T-4, T-351	58-61	400-425	37.7	260	20	120	41	283	20	138	10.6	73.1
T-6	63.1-63.8	435-440	50	345	5	125	41	283	18	124	10.6	73.1
T-851	66	455	58	400	5	128	42.9	296	17	117	10.6	73.1

Aluminum Alloy 2024