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Plasma-Material Interaction Data Set 176
Diffusivity of H in Steel
$$
D = D_0 \exp\left(-\frac{E_\mathrm{d}}{k_\mathrm{B}T}\right)
$$
[In the above formula, the Boltzmann constant is expressed in \(\mathrm{eV\,K^{-1}}\).]
- Material: Steel
- Alloy: SS316L
- Method: Experiment
- Data scaled for isotope mass? No
- D0 = 7.66e-08 m2 s-1
- Ed = 0.44 eV
- T = 573 – 823 K
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- B73: K. Forcey, D. Ross, J. Simpson, D. Evans, "Hydrogen transport and solubility in 316L and 1.4914 steels for fusion reactor applications
", Journal of Nuclear Materials 160, 117-124 (1988). [10.1016/0022-3115(88)90038-4]
Comment
Heat treated 316L SS, Pressure dependence of permeability: ~P^0.5 for 316L. Data provided by M. Lavrentiev (UKAEA, 2024) with permission from STEP.