Specifies the thermal expansion coefficient at the reference Temperature in the indicated units.
Typical units (depending on your unit system):
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in/in/ºF x 1.0E6
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mm/mm/ºC x 1.0E6
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cm/cm/ºC x 1.0E6
Type the value without the implied exponent of 10-6 (E-6). For example, for carbon steel at 400-deg F, B 31.3 Table C-3 specifies an expansion coefficient of 6.82 E-6 in/in/deg.F (12.28 E-6 mm./mm./deg.C). You then type 6.82 for English units, or 12.28 for metric units.