M261 Chemical composition and Mechanical properties
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Physical Properties
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Metric
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English
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Comments
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Density
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7.82g/cc
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0.283 lb/in³
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Mechanical Properties
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Metric
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English
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Comments
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Hardness, Rockwell C
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30.0
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30.0
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Solution Annealed
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38.0 - 42.0
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38.0 - 42.0
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Stock Standard
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<= 44.0
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<= 44.0
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After Aging
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Modulus of Elasticity
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210GPa
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30500 ksi
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Thermal Properties
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Metric
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English
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Comments
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CTE, linear
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11.3 µm/m-°C
@Temperature 100 °C |
6.28 µin/in-°F
@Temperature 212 °F |
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12.2 µm/m-°C
@Temperature 200 °C |
6.78 µin/in-°F
@Temperature 392 °F |
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12.8 µm/m-°C
@Temperature 300 °C |
7.11 µin/in-°F
@Temperature 572 °F |
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13.2 µm/m-°C
@Temperature 400 °C |
7.33 µin/in-°F
@Temperature 752 °F |
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13.5 µm/m-°C
@Temperature 500 °C |
7.50 µin/in-°F
@Temperature 932 °F |
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Thermal Conductivity
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25.0 W/m-K
@Temperature 20.0 °C |
174 BTU-in/hr-ft²-°F
@Temperature 68.0 °F |
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26.4 W/m-K
@Temperature 100 °C |
183 BTU-in/hr-ft²-°F
@Temperature 212 °F |
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29.5 W/m-K
@Temperature 200 °C |
205 BTU-in/hr-ft²-°F
@Temperature 392 °F |
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31.5 W/m-K
@Temperature 300 °C |
219 BTU-in/hr-ft²-°F
@Temperature 572 °F |
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32.3 W/m-K
@Temperature 400 °C |
224 BTU-in/hr-ft²-°F
@Temperature 752 °F |
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Component Elements Properties
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Metric
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English
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Comments
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Aluminum, Al
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1.20 %
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1.20 %
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Carbon, C
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0.130 %
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0.130 %
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Chromium, Cr
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0.350 %
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0.350 %
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Copper, Cu
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1.20 %
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1.20 %
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Iron, Fe
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91.32 %
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91.32 %
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As Balance
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Manganese, Mn
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2.00 %
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2.00 %
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Nickel, Ni
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3.50 %
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3.50 %
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Silicon, Si
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0.300 %
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0.300 %
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