1. Coefficient of Thermal Conductivity of Alloy 20(UNS N08020)

Temp. °F	70	100	150	200	250	300	350	400	450	500
TC	6.9	6.9	7.2	7.5	7.8	8.0	8.3	8.6	8.8	9.1
Temp. °F	550	600	650	700	750	800	850	900	950	1000
TC	9.4	9.7	10.0	10.2	10.5	10.8	11.0	11.3	11.6	11.9

*TC: the coefficient of thermal conductivity, Btu/hr-ft-°F.
*Temp.: metal temperature, not exceeding.

2. Coefficient of Thermal Diffusivity of Alloy 20(UNS N08020)

Temp. °F	70	100	150	200	250	300	350	400
TD	0.198	0.198	0.207	0.214	0.222	0.230	0.238	0.246
Temp. °F	450	500	550	600	650	700	750	800
TD	0.255	0.263	0.271	0.278	0.286	0.293	0.300	0.309

*TD: the coefficient of thermal diffusivity, ft²/hr.
*Temp.: metal temperature, not exceeding.

All tabulated values are in accordance with ASME Boiler & Pressure Vessel Code Section II, Part D.