Numerical Study of Hydrogen Trapping: Application to an API 5L X60 Steel

Table 1

Minimal and maximal absolute values of the free energy of trapping Δ𝐺.

Temperature	𝐶0	𝐾min	|Δ𝐺min|	𝐾max	|Δ𝐺max|
°C	10^−9 mol H cm^3	(mol H)^−1 cm^3	KJ/mol	(mol H)^−1 cm^3	KJ/mol
10	1.36	1.47×10^−6	33.4	3.66×10^−11	62.7
30	3.18	6.30×10^−5	33.7	1.57×10^−11	65.0
50	6.67	3.01×10^−5	33.9	7.48×10^−10	67.3
70	12.83	1.56×10^−5	34.1	3.89×10^−10	69.6
90	22.97	8.73×10^−4	34.4	2.17×10^−10	71.9