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Rulon Bearings

Aluminum 7178-T6; 7178-T651 (Included Creep/Rupture Data)
Categories: Metal; Nonferrous Metal; Aluminum Alloy; 7000 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:
This designation is considered the sole original alloy for this alloy family.
Composition information provided by the Aluminum Association and is not for design.
Key Words: UNS A97178; Aluminium 7178-T6; Aluminium 7178-T651; AA7178-T651; AA7178-T6
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 2.83 g/cc0.102 lb/in³AA; Typical
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 160160500 kg load with 10 mm ball
Hardness, Knoop 205205Converted from Brinell Hardness Value
Hardness, Rockwell A 55.355.3Converted from Brinell Hardness Value
Hardness, Rockwell B 9090Converted from Brinell Hardness Value
Hardness, Vickers 189189Converted from Brinell Hardness Value
Tensile Strength, Ultimate 607 MPa88000 psiAA; Typical
 45.0 MPa
@Temperature 371 °C		6530 psi
@Temperature 700 °F
 59.0 MPa
@Temperature 316 °C		8560 psi
@Temperature 601 °F
 76.0 MPa
@Temperature 260 °C		11000 psi
@Temperature 500 °F
 105 MPa
@Temperature 204 °C		15200 psi
@Temperature 399 °F
 215 MPa
@Temperature 149 °C		31200 psi
@Temperature 300 °F
 505 MPa
@Temperature 100 °C		73200 psi
@Temperature 212 °F
 605 MPa
@Temperature 24.0 °C		87700 psi
@Temperature 75.2 °F
 625 MPa
@Temperature -28.0 °C		90600 psi
@Temperature -18.4 °F
 650 MPa
@Temperature -80.0 °C		94300 psi
@Temperature -112 °F
 730 MPa
@Temperature -196 °C		106000 psi
@Temperature -321 °F
Tensile Strength, Yield 538 MPa78000 psiAA; Typical
 38.0 MPa
@Strain 0.2 %,
Temperature 271 °C		5510 psi
@Strain 0.2 %,
Temperature 520 °F
 48.0 MPa
@Strain 0.2 %,
Temperature 316 °C		6960 psi
@Strain 0.2 %,
Temperature 601 °F
 62.0 MPa
@Strain 0.2 %,
Temperature 260 °C		8990 psi
@Strain 0.2 %,
Temperature 500 °F
 83.0 MPa
@Strain 0.2 %,
Temperature 204 °C		12000 psi
@Strain 0.2 %,
Temperature 399 °F
 185 MPa
@Strain 0.2 %,
Temperature 149 °C		26800 psi
@Strain 0.2 %,
Temperature 300 °F
 470 MPa
@Strain 0.2 %,
Temperature 100 °C		68200 psi
@Strain 0.2 %,
Temperature 212 °F
 540 MPa
@Strain 0.2 %,
Temperature 24.0 °C		78300 psi
@Strain 0.2 %,
Temperature 75.2 °F
 560 MPa
@Strain 0.2 %,
Temperature -28.0 °C		81200 psi
@Strain 0.2 %,
Temperature -18.4 °F
 580 MPa
@Strain 0.2 %,
Temperature -80.0 °C		84100 psi
@Strain 0.2 %,
Temperature -112 °F
 650 MPa
@Strain 0.2 %,
Temperature -196 °C		94300 psi
@Strain 0.2 %,
Temperature -321 °F
Elongation at Break  5.0 %
@Temperature -196 °C		5.0 %
@Temperature -321 °F
 8.0 %
@Temperature -80.0 °C		8.0 %
@Temperature -112 °F
 9.0 %
@Temperature -28.0 °C		9.0 %
@Temperature -18.4 °F
 11 %
@Temperature 24.0 °C		11 %
@Temperature 75.2 °F
 14 %
@Temperature 100 °C		14 %
@Temperature 212 °F
 40 %
@Temperature 149 °C		40 %
@Temperature 300 °F
 70 %
@Temperature 204 °C		70 %
@Temperature 399 °F
 76 %
@Temperature 260 °C		76 %
@Temperature 500 °F
 80 %
@Temperature 316 °C		80 %
@Temperature 601 °F
 80 %
@Temperature 371 °C		80 %
@Temperature 700 °F
 10 %
@Thickness 1.59 mm		10 %
@Thickness 0.0625 in		AA; Typical
 11 %
@Diameter 12.7 mm		11 %
@Diameter 0.500 in		AA; Typical
Creep Strength  23.0 MPa
@Temperature 315 °C,
Time 3.60e+6 sec		3340 psi
@Temperature 599 °F,
Time 1000 hour		1% creep
 26.0 MPa
@Temperature 315 °C,
Time 360000 sec		3770 psi
@Temperature 599 °F,
Time 100 hour		0.5% creep
 26.0 MPa
@Temperature 315 °C,
Time 36000 sec		3770 psi
@Temperature 599 °F,
Time 10.0 hour		0.2% creep
 26.0 MPa
@Temperature 315 °C,
Time 3600 sec		3770 psi
@Temperature 599 °F,
Time 1.00 hour		0.1% creep
 29.0 MPa
@Temperature 260 °C,
Time 3.60e+6 sec		4210 psi
@Temperature 500 °F,
Time 1000 hour		0.5% creep
 30.0 MPa
@Temperature 315 °C,
Time 360000 sec		4350 psi
@Temperature 599 °F,
Time 100 hour		1% creep
 34.0 MPa
@Temperature 260 °C,
Time 3.60e+6 sec		4930 psi
@Temperature 500 °F,
Time 1000 hour		1% creep
 34.0 MPa
@Temperature 315 °C,
Time 36000 sec		4930 psi
@Temperature 599 °F,
Time 10.0 hour		0.5% creep
 34.0 MPa
@Temperature 260 °C,
Time 360000 sec		4930 psi
@Temperature 500 °F,
Time 100 hour		0.2% creep
 34.0 MPa
@Temperature 315 °C,
Time 3600 sec		4930 psi
@Temperature 599 °F,
Time 1.00 hour		0.2% creep
 38.0 MPa
@Temperature 315 °C,
Time 36000 sec		5510 psi
@Temperature 599 °F,
Time 10.0 hour		1% creep
 38.0 MPa
@Temperature 315 °C,
Time 360 sec		5510 psi
@Temperature 599 °F,
Time 0.100 hour		0.1% creep
 41.0 MPa
@Temperature 315 °C,
Time 3600 sec		5950 psi
@Temperature 599 °F,
Time 1.00 hour		0.5% creep
 41.0 MPa
@Temperature 260 °C,
Time 36000 sec		5950 psi
@Temperature 500 °F,
Time 10.0 hour		0.1% creep
 45.0 MPa
@Temperature 315 °C,
Time 3600 sec		6530 psi
@Temperature 599 °F,
Time 1.00 hour		1% creep
 45.0 MPa
@Temperature 260 °C,
Time 360000 sec		6530 psi
@Temperature 500 °F,
Time 100 hour		0.5% creep
 45.0 MPa
@Temperature 315 °C,
Time 360 sec		6530 psi
@Temperature 599 °F,
Time 0.100 hour		0.2% creep
 48.0 MPa
@Temperature 315 °C,
Time 360 sec		6960 psi
@Temperature 599 °F,
Time 0.100 hour		0.5% creep
 52.0 MPa
@Temperature 260 °C,
Time 360000 sec		7540 psi
@Temperature 500 °F,
Time 100 hour		1% creep
 52.0 MPa
@Temperature 315 °C,
Time 360 sec		7540 psi
@Temperature 599 °F,
Time 0.100 hour		1% creep
 55.0 MPa
@Temperature 260 °C,
Time 36000 sec		7980 psi
@Temperature 500 °F,
Time 10.0 hour		0.2% creep
 55.0 MPa
@Temperature 205 °C,
Time 3.60e+6 sec		7980 psi
@Temperature 401 °F,
Time 1000 hour		0.1% creep
 59.0 MPa
@Temperature 205 °C,
Time 3.60e+6 sec		8560 psi
@Temperature 401 °F,
Time 1000 hour		0.2% creep
 66.0 MPa
@Temperature 260 °C,
Time 36000 sec		9570 psi
@Temperature 500 °F,
Time 10.0 hour		0.5% creep
 66.0 MPa
@Temperature 260 °C,
Time 3600 sec		9570 psi
@Temperature 500 °F,
Time 1.00 hour		0.1% creep
 69.0 MPa
@Temperature 205 °C,
Time 3.60e+6 sec		10000 psi
@Temperature 401 °F,
Time 1000 hour		1% creep
 69.0 MPa
@Temperature 260 °C,
Time 36000 sec		10000 psi
@Temperature 500 °F,
Time 10.0 hour		1% creep
 69.0 MPa
@Temperature 205 °C,
Time 3.60e+6 sec		10000 psi
@Temperature 401 °F,
Time 1000 hour		0.5% creep
 76.0 MPa
@Temperature 205 °C,
Time 360000 sec		11000 psi
@Temperature 401 °F,
Time 100 hour		0.1% creep
 83.0 MPa
@Temperature 205 °C,
Time 360000 sec		12000 psi
@Temperature 401 °F,
Time 100 hour		0.2% creep
 83.0 MPa
@Temperature 260 °C,
Time 3600 sec		12000 psi
@Temperature 500 °F,
Time 1.00 hour		0.2% creep
 90.0 MPa
@Temperature 260 °C,
Time 3600 sec		13100 psi
@Temperature 500 °F,
Time 1.00 hour		0.5% creep
 97.0 MPa
@Temperature 205 °C,
Time 360000 sec		14100 psi
@Temperature 401 °F,
Time 100 hour		1% creep
 97.0 MPa
@Temperature 260 °C,
Time 3600 sec		14100 psi
@Temperature 500 °F,
Time 1.00 hour		1% creep
 97.0 MPa
@Temperature 205 °C,
Time 360000 sec		14100 psi
@Temperature 401 °F,
Time 100 hour		0.5% creep
 97.0 MPa
@Temperature 205 °C,
Time 36000 sec		14100 psi
@Temperature 401 °F,
Time 10.0 hour		0.1% creep
 97.0 MPa
@Temperature 260 °C,
Time 360 sec		14100 psi
@Temperature 500 °F,
Time 0.100 hour		0.1% creep
 105 MPa
@Temperature 260 °C,
Time 360 sec		15200 psi
@Temperature 500 °F,
Time 0.100 hour		0.2% creep
 110 MPa
@Temperature 260 °C,
Time 360 sec		16000 psi
@Temperature 500 °F,
Time 0.100 hour		1% creep
 110 MPa
@Temperature 260 °C,
Time 360 sec		16000 psi
@Temperature 500 °F,
Time 0.100 hour		0.5% creep
 130 MPa
@Temperature 205 °C,
Time 36000 sec		18900 psi
@Temperature 401 °F,
Time 10.0 hour		0.2% creep
 130 MPa
@Temperature 150 °C,
Time 3.60e+6 sec		18900 psi
@Temperature 302 °F,
Time 1000 hour		0.1% creep
 145 MPa
@Temperature 205 °C,
Time 36000 sec		21000 psi
@Temperature 401 °F,
Time 10.0 hour		1% creep
 145 MPa
@Temperature 205 °C,
Time 36000 sec		21000 psi
@Temperature 401 °F,
Time 10.0 hour		0.5% creep
 145 MPa
@Temperature 205 °C,
Time 3600 sec		21000 psi
@Temperature 401 °F,
Time 1.00 hour		0.1% creep
 150 MPa
@Temperature 150 °C,
Time 3.60e+6 sec		21800 psi
@Temperature 302 °F,
Time 1000 hour		0.2% creep
 170 MPa
@Temperature 150 °C,
Time 3.60e+6 sec		24700 psi
@Temperature 302 °F,
Time 1000 hour		0.5% creep
 180 MPa
@Temperature 150 °C,
Time 3.60e+6 sec		26100 psi
@Temperature 302 °F,
Time 1000 hour		1% creep
 180 MPa
@Temperature 205 °C,
Time 3600 sec		26100 psi
@Temperature 401 °F,
Time 1.00 hour		0.2% creep
 185 MPa
@Temperature 150 °C,
Time 360000 sec		26800 psi
@Temperature 302 °F,
Time 100 hour		0.1% creep
 200 MPa
@Temperature 205 °C,
Time 3600 sec		29000 psi
@Temperature 401 °F,
Time 1.00 hour		0.5% creep
 205 MPa
@Temperature 205 °C,
Time 3600 sec		29700 psi
@Temperature 401 °F,
Time 1.00 hour		1% creep
 205 MPa
@Temperature 205 °C,
Time 360 sec		29700 psi
@Temperature 401 °F,
Time 0.100 hour		0.1% creep
 235 MPa
@Temperature 150 °C,
Time 360000 sec		34100 psi
@Temperature 302 °F,
Time 100 hour		0.2% creep
 235 MPa
@Temperature 205 °C,
Time 360 sec		34100 psi
@Temperature 401 °F,
Time 0.100 hour		0.2% creep
 250 MPa
@Temperature 150 °C,
Time 36000 sec		36300 psi
@Temperature 302 °F,
Time 10.0 hour		0.1% creep
 255 MPa
@Temperature 150 °C,
Time 360000 sec		37000 psi
@Temperature 302 °F,
Time 100 hour		0.5% creep
 255 MPa
@Temperature 205 °C,
Time 360 sec		37000 psi
@Temperature 401 °F,
Time 0.100 hour		0.5% creep
 260 MPa
@Temperature 205 °C,
Time 360 sec		37700 psi
@Temperature 401 °F,
Time 0.100 hour		1% creep
 270 MPa
@Temperature 150 °C,
Time 360000 sec		39200 psi
@Temperature 302 °F,
Time 100 hour		1% creep
 310 MPa
@Temperature 150 °C,
Time 36000 sec		45000 psi
@Temperature 302 °F,
Time 10.0 hour		0.2% creep
 315 MPa
@Temperature 150 °C,
Time 3600 sec		45700 psi
@Temperature 302 °F,
Time 1.00 hour		0.1% creep
 340 MPa
@Temperature 150 °C,
Time 36000 sec		49300 psi
@Temperature 302 °F,
Time 10.0 hour		0.5% creep
 345 MPa
@Temperature 150 °C,
Time 36000 sec		50000 psi
@Temperature 302 °F,
Time 10.0 hour		1% creep
 360 MPa
@Temperature 150 °C,
Time 3600 sec		52200 psi
@Temperature 302 °F,
Time 1.00 hour		0.2% creep
 365 MPa
@Temperature 150 °C,
Time 360 sec		52900 psi
@Temperature 302 °F,
Time 0.100 hour		0.1% creep
 380 MPa
@Temperature 150 °C,
Time 3600 sec		55100 psi
@Temperature 302 °F,
Time 1.00 hour		0.5% creep
 395 MPa
@Temperature 150 °C,
Time 3600 sec		57300 psi
@Temperature 302 °F,
Time 1.00 hour		1% creep
 395 MPa
@Temperature 150 °C,
Time 360 sec		57300 psi
@Temperature 302 °F,
Time 0.100 hour		0.2% creep
 415 MPa
@Temperature 150 °C,
Time 360 sec		60200 psi
@Temperature 302 °F,
Time 0.100 hour		0.5% creep
 420 MPa
@Temperature 150 °C,
Time 360 sec		60900 psi
@Temperature 302 °F,
Time 0.100 hour		1% creep
Rupture Strength  28.0 MPa
@Temperature 315 °C,
Time 3.60e+6 sec		4060 psi
@Temperature 599 °F,
Time 1000 hour
 34.0 MPa
@Temperature 315 °C,
Time 360000 sec		4930 psi
@Temperature 599 °F,
Time 100 hour
 41.0 MPa
@Temperature 260 °C,
Time 3.60e+6 sec		5950 psi
@Temperature 500 °F,
Time 1000 hour
 41.0 MPa
@Temperature 315 °C,
Time 36000 sec		5950 psi
@Temperature 599 °F,
Time 10.0 hour
 52.0 MPa
@Temperature 315 °C,
Time 3600 sec		7540 psi
@Temperature 599 °F,
Time 1.00 hour
 55.0 MPa
@Temperature 260 °C,
Time 360000 sec		7980 psi
@Temperature 500 °F,
Time 100 hour
 62.0 MPa
@Temperature 315 °C,
Time 360 sec		8990 psi
@Temperature 599 °F,
Time 0.100 hour
 69.0 MPa
@Temperature 205 °C,
Time 3.60e+6 sec		10000 psi
@Temperature 401 °F,
Time 1000 hour
 69.0 MPa
@Temperature 260 °C,
Time 36000 sec		10000 psi
@Temperature 500 °F,
Time 10.0 hour
 97.0 MPa
@Temperature 260 °C,
Time 3600 sec		14100 psi
@Temperature 500 °F,
Time 1.00 hour
 105 MPa
@Temperature 205 °C,
Time 360000 sec		15200 psi
@Temperature 401 °F,
Time 100 hour
 110 MPa
@Temperature 260 °C,
Time 360 sec		16000 psi
@Temperature 500 °F,
Time 0.100 hour
 150 MPa
@Temperature 205 °C,
Time 36000 sec		21800 psi
@Temperature 401 °F,
Time 10.0 hour
 180 MPa
@Temperature 150 °C,
Time 3.60e+6 sec		26100 psi
@Temperature 302 °F,
Time 1000 hour
 215 MPa
@Temperature 205 °C,
Time 3600 sec		31200 psi
@Temperature 401 °F,
Time 1.00 hour
 275 MPa
@Temperature 205 °C,
Time 360 sec		39900 psi
@Temperature 401 °F,
Time 0.100 hour
 285 MPa
@Temperature 150 °C,
Time 360000 sec		41300 psi
@Temperature 302 °F,
Time 100 hour
 370 MPa
@Temperature 150 °C,
Time 36000 sec		53700 psi
@Temperature 302 °F,
Time 10.0 hour
 415 MPa
@Temperature 150 °C,
Time 3600 sec		60200 psi
@Temperature 302 °F,
Time 1.00 hour
 440 MPa
@Temperature 150 °C,
Time 360 sec		63800 psi
@Temperature 302 °F,
Time 0.100 hour
Modulus of Elasticity 71.7 GPa10400 ksiAA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Compressive Yield Strength 530 MPa76900 psi0.1% Permanent Set
Notched Tensile Strength 386 MPa56000 psi2.5 cm width x 0.16 cm thick side-notched specimen, Kt = 17.
Ultimate Bearing Strength 1089 MPa157900 psiEdge distance/pin diameter = 2.0
Bearing Yield Strength 807 MPa117000 psiEdge distance/pin diameter = 2.0
Poissons Ratio 0.330.33Estimated from trends in similar Al alloys.
Fatigue Strength 150 MPa
@# of Cycles 5.00e+8 		21800 psi
@# of Cycles 5.00e+8
Machinability 70 %70 %0-100 Scale of Aluminum Alloys
Shear Modulus 27.0 GPa3920 ksiEstimated from similar Al alloys.
Shear Strength 360 MPa52200 psi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000549 ohm-cm
@Temperature 20.0 °C		0.00000549 ohm-cm
@Temperature 68.0 °F		AA; Typical
 
Thermal PropertiesMetricEnglishComments
CTE, linear  21.7 µm/m-°C
@Temperature -50.0 - 20.0 °C		12.1 µin/in-°F
@Temperature -58.0 - 68.0 °F
 23.4 µm/m-°C
@Temperature 20.0 - 100 °C		13.0 µin/in-°F
@Temperature 68.0 - 212 °F		AA; Typical; average over range
 23.5 µm/m-°C
@Temperature 20.0 - 100 °C		13.1 µin/in-°F
@Temperature 68.0 - 212 °F
 24.4 µm/m-°C
@Temperature 20.0 - 200 °C		13.6 µin/in-°F
@Temperature 68.0 - 392 °F
 25.4 µm/m-°C
@Temperature 20.0 - 300 °C		14.1 µin/in-°F
@Temperature 68.0 - 572 °F
Specific Heat Capacity 0.856 J/g-°C0.205 BTU/lb-°F
Thermal Conductivity 125 W/m-K870 BTU-in/hr-ft²-°FAA; Typical at 77°F
Melting Point 477 - 629.4 °C890 - 1165 °FAA; Typical range based on typical composition for wrought products >= 1/4 in. thickness. Homogenization may raise eutectic melting temperature 20-40°F but usually does not eliminate it.
Solidus 477 °C890 °FAA; Typical
Liquidus 629.4 °C1165 °FAA; Typical
 
Processing PropertiesMetricEnglishComments
Annealing Temperature 413 °C775 °F
Solution Temperature 468 °C875 °F
Aging Temperature 121 °C250 °Ffor 24 hr
 
Component Elements PropertiesMetricEnglishComments
Aluminum, Al 85.3 - 89.5 %85.3 - 89.5 %As remainder
Chromium, Cr 0.18 - 0.28 %0.18 - 0.28 %
Copper, Cu 1.6 - 2.4 %1.6 - 2.4 %
Iron, Fe <= 0.50 %<= 0.50 %
Magnesium, Mg 2.4 - 3.1 %2.4 - 3.1 %
Manganese, Mn <= 0.30 %<= 0.30 %
Other, each <= 0.05 %<= 0.05 %
Other, total <= 0.15 %<= 0.15 %
Silicon, Si <= 0.40 %<= 0.40 %
Titanium, Ti <= 0.20 %<= 0.20 %
Zinc, Zn 6.3 - 7.3 %6.3 - 7.3 %

References for this datasheet.

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MA7178T6a / 170636

Aluminum Castings




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