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Rulon Bearings

Aluminum 2124-T851
Categories: Metal; Nonferrous Metal; Aluminum Alloy; 2000 Series Aluminum Alloy
Material Notes: Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN.

Composition Notes:
A Zr + Ti limit of 0.20 percent maximum may be used with this alloy designation for extruded and forged products only, but only when the supplier or producer and the purchaser have mutually so agreed. Agreement may be indicated, for example, by reference to a standard, by letter, by order note, or other means which allow the Zr + Ti limit.
Composition information provided by the Aluminum Association and is not for design.
Key Words: Aluminium 2124-T851; UNS A92124; QQ-A-250/29; ASTM B209; AMS 4101; AA2124-T851; Al2124-T851
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 2.78 g/cc0.100 lb/in³AA; Typical
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 128128500 kg load with 10 mm ball
Hardness, Knoop 161161Converted from Brinell Hardness Value
Hardness, Rockwell A 48.948.9Converted from Brinell Hardness Value
Hardness, Rockwell B 7979Converted from Brinell Hardness Value
Hardness, Vickers 146146Converted from Brinell Hardness Value
Tensile Strength, Ultimate 483 MPa70000 psiAA; Typical
 465 MPa
@Thickness 50.8 - 76.2 mm		67400 psi
@Thickness 2.00 - 3.00 in		Short transverse
 470 MPa
@Thickness 38.1 - 50.8 mm		68200 psi
@Thickness 1.50 - 2.00 in		Short transverse
 470 MPa
@Thickness 50.8 - 76.2 mm		68200 psi
@Thickness 2.00 - 3.00 in		Long transverse
 480 MPa
@Thickness 50.8 - 76.2 mm		69600 psi
@Thickness 2.00 - 3.00 in		Longitudinal
 490 MPa
@Thickness 38.1 - 50.8 mm		71100 psi
@Thickness 1.50 - 2.00 in		Longitudinal
 490 MPa
@Thickness 38.1 - 50.8 mm		71100 psi
@Thickness 1.50 - 2.00 in		Long transverse
 2.00 MPa
@Thickness 70.0 mm,
Temperature 535 °C		290 psi
@Thickness 2.76 in,
Temperature 995 °F
 16.0 MPa
@Thickness 70.0 mm,
Temperature 480 °C		2320 psi
@Thickness 2.76 in,
Temperature 896 °F
 485 MPa
@Thickness 70.0 mm,
Temperature 24.0 °C		70300 psi
@Thickness 2.76 in,
Temperature 75.2 °F
 505 MPa
@Thickness 70.0 mm,
Temperature -28.0 °C		73200 psi
@Thickness 2.76 in,
Temperature -18.4 °F
 525 MPa
@Thickness 70.0 mm,
Temperature -80.0 °C		76100 psi
@Thickness 2.76 in,
Temperature -112 °F
 595 MPa
@Thickness 70.0 mm,
Temperature -195 °C		86300 psi
@Thickness 2.76 in,
Temperature -319 °F
 705 MPa
@Thickness 70.0 mm,
Temperature -269 °C		102000 psi
@Thickness 2.76 in,
Temperature -452 °F
Tensile Strength, Yield 441 MPa64000 psiAA; Typical
 420 MPa
@Thickness 38.1 - 50.8 mm		60900 psi
@Thickness 1.50 - 2.00 in		Short transverse
 420 MPa
@Thickness 50.8 - 76.2 mm		60900 psi
@Thickness 2.00 - 3.00 in		Short transverse
 435 MPa
@Thickness 38.1 - 50.8 mm		63100 psi
@Thickness 1.50 - 2.00 in		Long transverse
 435 MPa
@Thickness 50.8 - 76.2 mm		63100 psi
@Thickness 2.00 - 3.00 in		Long transverse
 440 MPa
@Thickness 38.1 - 50.8 mm		63800 psi
@Thickness 1.50 - 2.00 in		Longitudinal
 440 MPa
@Thickness 50.8 - 76.2 mm		63800 psi
@Thickness 2.00 - 3.00 in		Longitudinal
 2.00 MPa
@Thickness 70.0 mm,
Temperature 535 °C		290 psi
@Thickness 2.76 in,
Temperature 995 °F
 12.0 MPa
@Thickness 70.0 mm,
Temperature 480 °C		1740 psi
@Thickness 2.76 in,
Temperature 896 °F
 450 MPa
@Thickness 70.0 mm,
Temperature 24.0 °C		65300 psi
@Thickness 2.76 in,
Temperature 75.2 °F
 470 MPa
@Thickness 70.0 mm,
Temperature -28.0 °C		68200 psi
@Thickness 2.76 in,
Temperature -18.4 °F
 490 MPa
@Thickness 70.0 mm,
Temperature -80.0 °C		71100 psi
@Thickness 2.76 in,
Temperature -112 °F
 545 MPa
@Thickness 70.0 mm,
Temperature -195 °C		79000 psi
@Thickness 2.76 in,
Temperature -319 °F
 620 MPa
@Thickness 70.0 mm,
Temperature -269 °C		89900 psi
@Thickness 2.76 in,
Temperature -452 °F
Elongation at Break  4.0 %
@Thickness 50.8 - 76.2 mm		4.0 %
@Thickness 2.00 - 3.00 in		Short transverse
 5.0 %
@Thickness 38.1 - 50.8 mm		5.0 %
@Thickness 1.50 - 2.00 in		Short transverse
 8.0 %
@Thickness 50.8 - 76.2 mm		8.0 %
@Thickness 2.00 - 3.00 in		Long transverse
 9.0 %
@Thickness 38.1 - 50.8 mm		9.0 %
@Thickness 1.50 - 2.00 in		Longitudinal
 9.0 %
@Thickness 38.1 - 50.8 mm		9.0 %
@Thickness 1.50 - 2.00 in		Long transverse
 9.0 %
@Thickness 50.8 - 76.2 mm		9.0 %
@Thickness 2.00 - 3.00 in		Longitudinal
 2.0 %
@Thickness 70.0 mm,
Temperature 535 °C		2.0 %
@Thickness 2.76 in,
Temperature 995 °F
 8.0 %
@Thickness 70.0 mm,
Temperature 24.0 °C		8.0 %
@Thickness 2.76 in,
Temperature 75.2 °F
 8.0 %
@Thickness 70.0 mm,
Temperature -80.0 °C		8.0 %
@Thickness 2.76 in,
Temperature -112 °F
 8.0 %
@Thickness 70.0 mm,
Temperature -28.0 °C		8.0 %
@Thickness 2.76 in,
Temperature -18.4 °F
 9.0 %
@Thickness 70.0 mm,
Temperature -195 °C		9.0 %
@Thickness 2.76 in,
Temperature -319 °F
 10 %
@Thickness 70.0 mm,
Temperature -269 °C		10 %
@Thickness 2.76 in,
Temperature -452 °F
 65 %
@Thickness 70.0 mm,
Temperature 480 °C		65 %
@Thickness 2.76 in,
Temperature 896 °F
 8.0 %
@Diameter 12.7 mm		8.0 %
@Diameter 0.500 in		AA; Typical
Modulus of Elasticity 73.1 GPa10600 ksiAA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
 72.0 GPa
@Thickness 70.0 mm,
Temperature 24.0 °C		10400 ksi
@Thickness 2.76 in,
Temperature 75.2 °F
 74.0 GPa
@Thickness 70.0 mm,
Temperature -28.0 °C		10700 ksi
@Thickness 2.76 in,
Temperature -18.4 °F
 76.0 GPa
@Thickness 70.0 mm,
Temperature -80.0 °C		11000 ksi
@Thickness 2.76 in,
Temperature -112 °F
 81.0 GPa
@Thickness 70.0 mm,
Temperature -195 °C		11700 ksi
@Thickness 2.76 in,
Temperature -319 °F
Tensile Modulus  55.0 GPa
@Temperature 260 °C		7980 ksi
@Temperature 500 °F
 56.0 GPa
@Temperature 250 °C		8120 ksi
@Temperature 482 °F
 61.0 GPa
@Temperature 200 °C		8850 ksi
@Temperature 392 °F
 65.0 GPa
@Temperature 150 °C		9430 ksi
@Temperature 302 °F
 68.0 GPa
@Temperature 100 °C		9860 ksi
@Temperature 212 °F
 71.0 GPa
@Temperature 50.0 °C		10300 ksi
@Temperature 122 °F
 72.0 GPa
@Temperature 25.0 °C		10400 ksi
@Temperature 77.0 °F
Poissons Ratio 0.330.33Estimated from trends in similar Al alloys.
Fatigue Strength 125 MPa
@# of Cycles 5.00e+8 		18100 psi
@# of Cycles 5.00e+8
Fracture Toughness 26.0 MPa-m½23.7 ksi-in½K(IC) in S-L Direction
 26.0 MPa-m½23.7 ksi-in½K(IC) in T-L Direction
 32.0 MPa-m½29.1 ksi-in½K(IC) in L-T Direction
Machinability 70 %70 %0-100 Scale of Aluminum Alloys
Shear Modulus 27.0 GPa3920 ksiEstimated from similar Al alloys.
Shear Strength 295 MPa42800 psi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000449 ohm-cm
@Temperature 20.0 °C		0.00000449 ohm-cm
@Temperature 68.0 °F		AA; Typical
 
Thermal PropertiesMetricEnglishComments
CTE, linear  21.1 µm/m-°C
@Temperature -50.0 - 20.0 °C		11.7 µin/in-°F
@Temperature -58.0 - 68.0 °F
 22.9 µm/m-°C
@Temperature 20.0 - 100 °C		12.7 µin/in-°F
@Temperature 68.0 - 212 °F		AA; Typical; average over range
 23.8 µm/m-°C
@Temperature 20.0 - 200 °C		13.2 µin/in-°F
@Temperature 68.0 - 392 °F
 24.7 µm/m-°C
@Temperature 20.0 - 300 °C		13.7 µin/in-°F
@Temperature 68.0 - 572 °F
Specific Heat Capacity 0.882 J/g-°C0.211 BTU/lb-°F
Thermal Conductivity 151 W/m-K1050 BTU-in/hr-ft²-°FAA; Typical at 77°F
Melting Point 502 - 638 °C935 - 1180 °FAA; Typical range based on typical composition for wrought products >= 1/4 in. thickness. Eutectic melting is not eliminated by homogenization.
Solidus 502 °C935 °FAA; Typical
Liquidus 638 °C1180 °FAA; Typical
 
Processing PropertiesMetricEnglishComments
Annealing Temperature 413 °C775 °F
Solution Temperature 493 °C920 °F
Aging Temperature 191 °C375 °F
 
Component Elements PropertiesMetricEnglishComments
Aluminum, Al 91.2 - 94.7 %91.2 - 94.7 %As remainder
Chromium, Cr <= 0.10 %<= 0.10 %
Copper, Cu 3.8 - 4.9 %3.8 - 4.9 %
Iron, Fe <= 0.30 %<= 0.30 %
Magnesium, Mg 1.2 - 1.8 %1.2 - 1.8 %
Manganese, Mn 0.30 - 0.90 %0.30 - 0.90 %
Other, each <= 0.05 %<= 0.05 %
Other, total <= 0.15 %<= 0.15 %
Silicon, Si <= 0.20 %<= 0.20 %
Titanium, Ti <= 0.15 %<= 0.15 %
Zinc, Zn <= 0.25 %<= 0.25 %

References for this datasheet.

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