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Aluminum 2618-T61 (Includes Creep/Rupture Data)
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:
Composition information provided by the Aluminum Association and is not for design.
Key Words: UNS A92618; Aluminium 2618-T61; AA2618-T61
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 PropertiesOriginal ValueComments
Density 2.76 g/ccAA; Typical
 
Mechanical PropertiesOriginal ValueComments
Hardness, Brinell 115AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop 144Converted from Brinell Hardness Value
Hardness, Rockwell A 45.5Converted from Brinell Hardness Value
Hardness, Rockwell B 72Converted from Brinell Hardness Value
Hardness, Vickers 130Converted from Brinell Hardness Value
Tensile Strength, Ultimate 64.0 ksiAA; Typical
 34.0 MPa
@Temperature 371 °C
 52.0 MPa
@Temperature 316 °C
 90.0 MPa
@Temperature 260 °C
 221 MPa
@Temperature 204 °C
 345 MPa
@Temperature 149 °C
 427 MPa
@Temperature 100 °C
 441 MPa
@Temperature -28.0 °C
 441 MPa
@Temperature 24.0 °C
 462 MPa
@Temperature -80.0 °C
 538 MPa
@Temperature -196 °C
 350 MPa
@Thickness 76.23 - 102 mm		Hand forgings; Short transverse
 360 MPa
@Thickness <=50.8 mm		Hand forgings; Short transverse
 360 MPa
@Thickness 50.83 - 76.2 mm		Hand forgings; Short transverse
 365 MPa
@Thickness 76.23 - 102 mm		Hand forgings; Long transverse
 380 MPa
@Thickness <=102 mm		Die forgings; Axis not parallel to grain flow
 380 MPa
@Thickness <=50.8 mm		Hand forgings; Long transverse
 380 MPa
@Thickness 50.83 - 76.2 mm		Hand forgings; Long transverse
 380 MPa
@Thickness <=63.5 mm		Rolled rings; Tangential
 380 MPa
@Thickness <=63.5 mm		Rolled rings; Axial
 385 MPa
@Thickness 76.23 - 102 mm		Hand forgings; Longitudinal
 395 MPa
@Thickness 50.83 - 76.2 mm		Hand forgings; Longitudinal
 400 MPa
@Thickness <=102 mm		Die forgings; Axis parallel to grain flow
 400 MPa
@Thickness <=50.8 mm		Hand forgings; Longitudinal
Tensile Strength, Yield 54.0 ksiAA; Typical
 270 MPa
@Thickness 76.23 - 102 mm		Hand forgings; Short transverse
 275 MPa
@Thickness 76.23 - 102 mm		Hand forgings; Long transverse
 285 MPa
@Thickness <=63.5 mm		Rolled rings; Tangential
 285 MPa
@Thickness <=63.5 mm		Rolled rings; Axial
 290 MPa
@Thickness <=102 mm		Die forgings; Axis not parallel to grain flow
 290 MPa
@Thickness <=50.8 mm		Hand forgings; Long transverse
 290 MPa
@Thickness <=50.8 mm		Hand forgings; Short transverse
 290 MPa
@Thickness 50.83 - 76.2 mm		Hand forgings; Long transverse
 290 MPa
@Thickness 50.83 - 76.2 mm		Hand forgings; Short transverse
 310 MPa
@Thickness <=102 mm		Die forgings; Axis parallel to grain flow
 310 MPa
@Thickness 76.23 - 102 mm		Hand forgings; Longitudinal
 315 MPa
@Thickness 50.83 - 76.2 mm		Hand forgings; Longitudinal
 325 MPa
@Thickness <=50.8 mm		Hand forgings; Longitudinal
 24.0 MPa
@Strain 0.2 %,
Temperature 371 °C
 31.0 MPa
@Strain 0.2 %,
Temperature 316 °C
 62.0 MPa
@Strain 0.2 %,
Temperature 260 °C
 179 MPa
@Strain 0.2 %,
Temperature 204 °C
 303 MPa
@Strain 0.2 %,
Temperature 149 °C
 372 MPa
@Strain 0.2 %,
Temperature -28.0 °C
 372 MPa
@Strain 0.2 %,
Temperature 24.0 °C
 372 MPa
@Strain 0.2 %,
Temperature 100 °C
 379 MPa
@Strain 0.2 %,
Temperature -80.0 °C
 421 MPa
@Strain 0.2 %,
Temperature -196 °C
Elongation at Break 10 %
@Temperature -28.0 °C
 10 %
@Temperature 24.0 °C
 10 %
@Temperature 100 °C
 11 %
@Temperature -80.0 °C
 12 %
@Temperature -196 °C
 14 %
@Temperature 149 °C
 24 %
@Temperature 204 °C
 50 %
@Temperature 260 °C
 80 %
@Temperature 316 °C
 120 %
@Temperature 371 °C
 4.0 %
@Thickness <=102 mm		Die forgings; Axis parallel to grain flow
 4.0 %
@Thickness <=102 mm		Die forgings; Axis not parallel to grain flow
 4.0 %
@Thickness <=50.8 mm		Hand forgings; Short transverse
 4.0 %
@Thickness 50.83 - 76.2 mm		Hand forgings; Short transverse
 4.0 %
@Thickness 76.23 - 102 mm		Hand forgings; Short transverse
 5.0 %
@Thickness <=50.8 mm		Hand forgings; Long transverse
 5.0 %
@Thickness 50.83 - 76.2 mm		Hand forgings; Long transverse
 5.0 %
@Thickness 76.23 - 102 mm		Hand forgings; Long transverse
 5.0 %
@Thickness <=63.5 mm		Rolled rings; Axial
 6.0 %
@Thickness <=63.5 mm		Rolled rings; Tangential
 7.0 %
@Thickness <=50.8 mm		Hand forgings; Longitudinal
 7.0 %
@Thickness 50.83 - 76.2 mm		Hand forgings; Longitudinal
 7.0 %
@Thickness 76.23 - 102 mm		Hand forgings; Longitudinal
 10 %
@Diameter 12.7 mm		AA; Typical
Creep Strength 14.0 MPa
@Temperature 315 °C,
Time 3.60e+6 sec		0.5% creep
 15.0 MPa
@Temperature 315 °C,
Time 360000 sec		0.1% creep
 17.0 MPa
@Temperature 315 °C,
Time 3.60e+6 sec		1% creep
 19.0 MPa
@Temperature 315 °C,
Time 360000 sec		0.2% creep
 26.0 MPa
@Temperature 315 °C,
Time 360000 sec		0.5% creep
 26.0 MPa
@Temperature 315 °C,
Time 36000 sec		0.1% creep
 28.0 MPa
@Temperature 315 °C,
Time 360000 sec		1% creep
 38.0 MPa
@Temperature 315 °C,
Time 36000 sec		0.2% creep
 41.0 MPa
@Temperature 315 °C,
Time 36000 sec		0.5% creep
 41.0 MPa
@Temperature 315 °C,
Time 3600 sec		0.1% creep
 45.0 MPa
@Temperature 315 °C,
Time 36000 sec		1% creep
 45.0 MPa
@Temperature 315 °C,
Time 3600 sec		0.2% creep
 48.0 MPa
@Temperature 260 °C,
Time 3.60e+6 sec		0.2% creep
 48.0 MPa
@Temperature 315 °C,
Time 360 sec		0.1% creep
 52.0 MPa
@Temperature 260 °C,
Time 360000 sec		0.1% creep
 55.0 MPa
@Temperature 260 °C,
Time 3.60e+6 sec		0.5% creep
 55.0 MPa
@Temperature 315 °C,
Time 3600 sec		0.5% creep
 55.0 MPa
@Temperature 315 °C,
Time 360 sec		0.2% creep
 62.0 MPa
@Temperature 260 °C,
Time 3.60e+6 sec		1% creep
 62.0 MPa
@Temperature 315 °C,
Time 3600 sec		1% creep
 69.0 MPa
@Temperature 315 °C,
Time 360 sec		0.5% creep
 69.0 MPa
@Temperature 260 °C,
Time 360000 sec		0.2% creep
 83.0 MPa
@Temperature 315 °C,
Time 360 sec		1% creep
 83.0 MPa
@Temperature 260 °C,
Time 36000 sec		0.1% creep
 90.0 MPa
@Temperature 260 °C,
Time 360000 sec		0.5% creep
 90.0 MPa
@Temperature 205 °C,
Time 3.60e+6 sec		0.1% creep
 97.0 MPa
@Temperature 260 °C,
Time 360000 sec		1% creep
 110 MPa
@Temperature 260 °C,
Time 36000 sec		0.2% creep
 115 MPa
@Temperature 260 °C,
Time 3600 sec		0.1% creep
 125 MPa
@Temperature 260 °C,
Time 36000 sec		0.5% creep
 130 MPa
@Temperature 260 °C,
Time 36000 sec		1% creep
 130 MPa
@Temperature 205 °C,
Time 3.60e+6 sec		0.2% creep
 140 MPa
@Temperature 260 °C,
Time 3600 sec		0.2% creep
 140 MPa
@Temperature 205 °C,
Time 360000 sec		0.1% creep
 145 MPa
@Temperature 205 °C,
Time 3.60e+6 sec		0.5% creep
 145 MPa
@Temperature 260 °C,
Time 3600 sec		0.5% creep
 145 MPa
@Temperature 260 °C,
Time 360 sec		0.1% creep
 150 MPa
@Temperature 205 °C,
Time 3.60e+6 sec		1% creep
 150 MPa
@Temperature 260 °C,
Time 3600 sec		1% creep
 150 MPa
@Temperature 177 °C,
Time 3.60e+6 sec		0.1% creep
 160 MPa
@Temperature 260 °C,
Time 360 sec		0.2% creep
 165 MPa
@Temperature 260 °C,
Time 360 sec		0.5% creep
 165 MPa
@Temperature 205 °C,
Time 360000 sec		0.2% creep
 170 MPa
@Temperature 260 °C,
Time 360 sec		1% creep
 170 MPa
@Temperature 205 °C,
Time 36000 sec		0.1% creep
 180 MPa
@Temperature 205 °C,
Time 360000 sec		0.5% creep
 185 MPa
@Temperature 205 °C,
Time 360000 sec		1% creep
 185 MPa
@Temperature 177 °C,
Time 3.60e+6 sec		0.2% creep
 185 MPa
@Temperature 177 °C,
Time 360000 sec		0.1% creep
 195 MPa
@Temperature 177 °C,
Time 3.60e+6 sec		0.5% creep
 200 MPa
@Temperature 177 °C,
Time 3.60e+6 sec		1% creep
 200 MPa
@Temperature 205 °C,
Time 36000 sec		0.2% creep
 205 MPa
@Temperature 150 °C,
Time 3.60e+6 sec		0.1% creep
 205 MPa
@Temperature 205 °C,
Time 3600 sec		0.1% creep
 215 MPa
@Temperature 205 °C,
Time 36000 sec		0.5% creep
 220 MPa
@Temperature 205 °C,
Time 36000 sec		1% creep
 220 MPa
@Temperature 177 °C,
Time 360000 sec		0.2% creep
 220 MPa
@Temperature 177 °C,
Time 36000 sec		0.1% creep
 235 MPa
@Temperature 177 °C,
Time 360000 sec		0.5% creep
 235 MPa
@Temperature 205 °C,
Time 3600 sec		0.2% creep
 240 MPa
@Temperature 177 °C,
Time 360000 sec		1% creep
 240 MPa
@Temperature 150 °C,
Time 3.60e+6 sec		0.2% creep
 240 MPa
@Temperature 150 °C,
Time 360000 sec		0.1% creep
 240 MPa
@Temperature 205 °C,
Time 360 sec		0.1% creep
 250 MPa
@Temperature 150 °C,
Time 3.60e+6 sec		0.5% creep
 250 MPa
@Temperature 205 °C,
Time 3600 sec		0.5% creep
 250 MPa
@Temperature 177 °C,
Time 36000 sec		0.2% creep
 255 MPa
@Temperature 150 °C,
Time 3.60e+6 sec		1% creep
 255 MPa
@Temperature 205 °C,
Time 3600 sec		1% creep
 255 MPa
@Temperature 205 °C,
Time 360 sec		0.2% creep
 255 MPa
@Temperature 177 °C,
Time 3600 sec		0.1% creep
 260 MPa
@Temperature 177 °C,
Time 36000 sec		0.5% creep
 270 MPa
@Temperature 205 °C,
Time 360 sec		0.5% creep
 270 MPa
@Temperature 150 °C,
Time 360000 sec		0.2% creep
 270 MPa
@Temperature 150 °C,
Time 36000 sec		0.1% creep
 275 MPa
@Temperature 177 °C,
Time 36000 sec		1% creep
 275 MPa
@Temperature 177 °C,
Time 3600 sec		0.2% creep
 285 MPa
@Temperature 205 °C,
Time 360 sec		1% creep
 285 MPa
@Temperature 177 °C,
Time 360 sec		0.1% creep
 290 MPa
@Temperature 150 °C,
Time 360000 sec		0.5% creep
 290 MPa
@Temperature 150 °C,
Time 3600 sec		0.1% creep
 295 MPa
@Temperature 177 °C,
Time 3600 sec		0.5% creep
 295 MPa
@Temperature 150 °C,
Time 36000 sec		0.2% creep
 295 MPa
@Temperature 177 °C,
Time 360 sec		0.2% creep
 305 MPa
@Temperature 150 °C,
Time 360000 sec		1% creep
 305 MPa
@Temperature 177 °C,
Time 3600 sec		1% creep
 315 MPa
@Temperature 150 °C,
Time 36000 sec		0.5% creep
 315 MPa
@Temperature 177 °C,
Time 360 sec		0.5% creep
 315 MPa
@Temperature 150 °C,
Time 3600 sec		0.2% creep
 315 MPa
@Temperature 150 °C,
Time 360 sec		0.1% creep
 325 MPa
@Temperature 150 °C,
Time 36000 sec		1% creep
 325 MPa
@Temperature 177 °C,
Time 360 sec		1% creep
 330 MPa
@Temperature 150 °C,
Time 3600 sec		0.5% creep
 330 MPa
@Temperature 150 °C,
Time 360 sec		0.2% creep
 340 MPa
@Temperature 150 °C,
Time 3600 sec		1% creep
 345 MPa
@Temperature 150 °C,
Time 360 sec		1% creep
 345 MPa
@Temperature 150 °C,
Time 360 sec		0.5% creep
Rupture Strength 20.0 MPa
@Temperature 315 °C,
Time 3.60e+6 sec
 32.0 MPa
@Temperature 315 °C,
Time 360000 sec
 52.0 MPa
@Temperature 315 °C,
Time 36000 sec
 62.0 MPa
@Temperature 260 °C,
Time 3.60e+6 sec
 69.0 MPa
@Temperature 315 °C,
Time 3600 sec
 97.0 MPa
@Temperature 315 °C,
Time 360 sec
 105 MPa
@Temperature 260 °C,
Time 360000 sec
 140 MPa
@Temperature 260 °C,
Time 36000 sec
 160 MPa
@Temperature 205 °C,
Time 3.60e+6 sec
 165 MPa
@Temperature 260 °C,
Time 3600 sec
 185 MPa
@Temperature 260 °C,
Time 360 sec
 195 MPa
@Temperature 205 °C,
Time 360000 sec
 205 MPa
@Temperature 177 °C,
Time 3.60e+6 sec
 230 MPa
@Temperature 205 °C,
Time 36000 sec
 250 MPa
@Temperature 177 °C,
Time 360000 sec
 255 MPa
@Temperature 150 °C,
Time 3.60e+6 sec
 260 MPa
@Temperature 205 °C,
Time 3600 sec
 285 MPa
@Temperature 177 °C,
Time 36000 sec
 290 MPa
@Temperature 205 °C,
Time 360 sec
 305 MPa
@Temperature 150 °C,
Time 360000 sec
 310 MPa
@Temperature 177 °C,
Time 3600 sec
 340 MPa
@Temperature 150 °C,
Time 36000 sec
 340 MPa
@Temperature 177 °C,
Time 360 sec
 360 MPa
@Temperature 150 °C,
Time 3600 sec
 380 MPa
@Temperature 150 °C,
Time 360 sec
Modulus of Elasticity 10800 ksiAA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Compressive Strength 370 MPa
Poissons Ratio 0.33
Fatigue Strength 18000 psi
@# of Cycles 5.00e+8 		completely reversed stress; RR Moore machine/specimen
Shear Modulus 27.0 GPaCalculated
Shear Strength 38.0 ksiAA; Typical
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00000470 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 12.4 µin/in-°F
@Temperature 20.0 - 100 °C		AA; Typical; average over range
 20.6 µm/m-°C
@Temperature -50.0 - 20.0 °C
 23.2 µm/m-°C
@Temperature 20.0 - 200 °C
 24.0 µm/m-°C
@Temperature 20.0 - 300 °C		average
 24.1 µm/m-°C
@Temperature 20.0 - 300 °C
Specific Heat Capacity 0.875 J/g-°C
Thermal Conductivity 146 W/m-K
Melting Point 1020 - 1180 °FAA; Typical range based on typical composition for wrought products >= 1/4 in. thickness
Solidus 1020 °FAA; Typical
Liquidus 1180 °FAA; Typical
 
Processing PropertiesOriginal ValueComments
Solution Temperature 985 °F
Aging Temperature 390 °Ffor 20 hr at temperature
 
Component Elements PropertiesOriginal ValueComments
Aluminum, Al 92.4 - 94.9 %As remainder
Copper, Cu 1.9 - 2.7 %
Iron, Fe 0.90 - 1.3 %
Magnesium, Mg 1.3 - 1.8 %
Nickel, Ni 0.90 - 1.2 %
Other, each <= 0.05 %
Other, total <= 0.15 %
Silicon, Si 0.10 - 0.25 %
Titanium, Ti 0.04 - 0.10 %
Zinc, Zn <= 0.10 %

References for this datasheet.

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