צינור אלומיניום 2011

General Characteristics
2011-T3 is a RoHS compliant, free machining alloy and temper combination that compares favorably with free cutting brass. 2011 is the alloy of choice when good strength and high machining rates are desired. It can be machined to very close tolerances and produces excellent machined surface finishes. Resistance welding, corrosion resistance and anodizeability are only fair. Other forms of welding are not recommended. Additional strength, without a sacrifice in machinability, can be achieved through the use of the T8 temper.

Typical chemical composition
									Others
Alloying element	Si	Fe	Cu	Mn	Mg	Cr	Zn	Ti	Each	Total	Aluminium
Weight %	0.40	0.7	5.0-6.0	--	--	--	0.30	--	0.05	0.15	Remainder

Physical properties
Characteristics		English	Metric
Nominal density (68°F/20°C)		0.102 lbs/in3	2.82 mg/m3
Melting range		1005°F-1180°F	541°C-638°C
Specific heat (212 °F/100°C)		0.206 BTU/lb - °F	864 J/KG- °K
Coefficient of thermal expansion	Linear  68°F – 212°F  20°C – 100°C	12.8 micro in/in- °F	23.1 micro in/in- °K
	Volumetric  68 ºF / 20 ºC	3.72 x 10-5 in.3/in.3 - ºF	67 x 10-6 m3/m3 - ºK
Thermal conductivity (68°F/20°C)	T3, T451	88 BTU/ft- hr - °F	152 W/m - °K
	T8	100 BTU/ft- hr - °F	173 W/m - °K
Electrical conductivity (68°F/20°C)	Equal volume	T3, T451	45% IACS
		T8	39% IACS
	Equal Weight	T3, T451	142% IACS
		T8	123% IACS

Mechanical properties
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
T-3	55	379	43	296	15	95	32	221	18	124	10.2	70
T-8	21	145	20	138	12	100	35	241	18	124	10.2	70

Specifications

·       ASTM – B210