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Temperature Correction Factor, release 1, issued 24 January 2008. Work version.

Description

This worksheet takes temperature and steel grade as input. It uses the formulae defined in the referenced documents to calculate the Temperature Correction Factor for Steel, which accounts for the fact that yield strength of steel decreases with increased temperature. The revised Minimum Yield Stress is also given.

NOTE – this calculation is only valid for steel alloys and for temperatures not exceeding 5000 F or 2600 Celsius.

Mathcad uses metric units internally so if imperial units are entered, they are converted to metric. Intermediate results are metric. Both units will be given as outputs.

User input

Enter the temperature at the depth of interest. Temp =

80

Enter the number part of the steel grade eg for L80, enter 80 (units are kpsi). Gr =

Click here when any values are modified to update the result.

Results

Entered

Temperature Correction Factor

API Minimum Yield Stress, ambient

API Minimum Yield Stress, with TCF

Worksheet references

Formulae for Temperature Correction Factor taken from the Exxon Casing Design Manual.

Version 1 of this worksheet released on 24 January 2008.