Air Properties - Thermal Conductivity vs. Temperature

Calculate air thermal conductivity at given temperature and pressure. Thermal conductivity describes the ability to conduct heat and is expressed in multiple unit systems including W/(m K), Btu/(h ft °F), and kcal(IT)/(h m K).

Calculator

Inputs

Temperature (°C)

Temperature Unit

Results

Thermal Conductivity-- mW/(m K)

Thermal Conductivity-- kcal(IT)/(h m K)

Thermal Conductivity-- Btu(IT)/(h ft °F)

Temperature (°C)	Thermal Conductivity (mW/m K)	Thermal Conductivity (kcal(IT)/(h m K))	Thermal Conductivity (Btu(IT)/(h ft °F))
-190	7.82	0.00672	0.00452
-150	11.69	0.01005	0.00675
-100	16.2	0.01393	0.00936
-75	18.34	0.01577	0.0106
-50	20.41	0.01755	0.01179
-25	22.41	0.01927	0.01295
-15	23.2	0.01995	0.0134
-10	23.59	0.02028	0.01363
-5	23.97	0.02061	0.01385
0	24.36	0.02094	0.01407
5	24.74	0.02127	0.01429
10	25.12	0.0216	0.01451
15	25.5	0.02192	0.01473
20	25.87	0.02225	0.01495
25	26.24	0.02257	0.01516
30	26.62	0.02289	0.01538
40	27.35	0.02352	0.0158
50	28.08	0.02415	0.01623
60	28.8	0.02477	0.01664
80	30.23	0.02599	0.01746
100	31.62	0.02719	0.01827
125	33.33	0.02866	0.01926
150	35	0.0301	0.02022
175	36.64	0.03151	0.02117
200	38.25	0.03289	0.0221
225	39.83	0.03425	0.02301
300	44.41	0.03819	0.02566
412	50.92	0.04378	0.02942
500	55.79	0.04797	0.03224
600	61.14	0.05257	0.03533
700	66.32	0.05702	0.03832
800	71.35	0.06135	0.04122
900	76.26	0.06557	0.04406
1000	81.08	0.06971	0.04685
1100	85.83	0.0738	0.04959

Temperature (°F)	Thermal Conductivity (Btu(IT)/(h ft °F))	Thermal Conductivity (kcal(IT)/(h m K))	Thermal Conductivity (mW/m K)
-300	0.00484	0.0072	8.37
-200	0.00788	0.01172	13.63
-100	0.01068	0.01589	18.48
-50	0.012	0.01786	20.77
-20	0.01277	0.01901	22.1
0	0.01328	0.01976	22.98
10	0.01353	0.02013	23.41
20	0.01378	0.0205	23.84
30	0.01402	0.02087	24.27
40	0.01427	0.02123	24.7
50	0.01451	0.0216	25.12
60	0.01476	0.02196	25.54
70	0.015	0.02232	25.95
80	0.01524	0.02267	26.37
100	0.01571	0.02338	27.19
120	0.01618	0.02408	28
140	0.01664	0.02477	28.8
160	0.0171	0.02545	29.6
180	0.01755	0.02612	30.38
200	0.018	0.02679	31.16
250	0.01911	0.02843	33.07
300	0.02018	0.03003	34.93
350	0.02123	0.0316	36.75
400	0.02226	0.03313	38.53
450	0.02327	0.03463	40.28
500	0.02426	0.03611	41.99
600	0.0262	0.03898	45.34
700	0.02807	0.04177	48.58
800	0.0299	0.04449	51.74
1000	0.03342	0.04973	57.84
1200	0.0368	0.05477	63.69
1400	0.04007	0.05963	69.35
1600	0.04325	0.06436	74.85
1800	0.04635	0.06898	80.23
2000	0.04941	0.07353	85.51