R454B pressure–temperature chart

R454B

A2LGWP (AR4) 466Blend · glide ≈ 1.4 K

Pressures are gauge, in bar (g): bar (a) minus 1.01325 bar.

°C	Bubble (liquid) bar (g)use for subcooling	Dew (vapour) bar (g)use for superheat
-45	0.33	0.25
-44	0.39	0.31
-43	0.46	0.38
-42	0.53	0.44
-41	0.60	0.51
-40	0.68	0.58
-39	0.75	0.66
-38	0.83	0.73
-37	0.92	0.81
-36	1.00	0.89
-35	1.09	0.98
-34	1.19	1.07
-33	1.28	1.16
-32	1.38	1.25
-31	1.48	1.35
-30	1.59	1.45
-29	1.69	1.55
-28	1.81	1.66
-27	1.92	1.77
-26	2.04	1.88
-25	2.16	2.00
-24	2.29	2.12
-23	2.42	2.25
-22	2.55	2.37
-21	2.69	2.51
-20	2.83	2.64
-19	2.98	2.78
-18	3.13	2.93
-17	3.29	3.07
-16	3.45	3.23
-15	3.61	3.38
-14	3.78	3.54
-13	3.95	3.71
-12	4.13	3.88
-11	4.31	4.06
-10	4.50	4.24
-9	4.69	4.42
-8	4.89	4.61
-7	5.09	4.80
-6	5.30	5.00
-5	5.51	5.21
-4	5.73	5.42
-3	5.95	5.63
-2	6.18	5.85
-1	6.42	6.08
0	6.66	6.31
1	6.91	6.55
2	7.16	6.79
3	7.42	7.04
4	7.68	7.30
5	7.96	7.56
6	8.23	7.82
7	8.52	8.10
8	8.81	8.38
9	9.10	8.66
10	9.41	8.96
11	9.72	9.26
12	10.04	9.56
13	10.36	9.87
14	10.69	10.19
15	11.03	10.52
16	11.38	10.86
17	11.73	11.20
18	12.09	11.55
19	12.46	11.90
20	12.83	12.27
21	13.22	12.64
22	13.61	13.02
23	14.01	13.40
24	14.41	13.80
25	14.83	14.20
26	15.25	14.61
27	15.69	15.03
28	16.13	15.46
29	16.58	15.90
30	17.04	16.35
31	17.50	16.80
32	17.98	17.26
33	18.46	17.74
34	18.96	18.22
35	19.46	18.71
36	19.97	19.21
37	20.50	19.72
38	21.03	20.24
39	21.57	20.77
40	22.12	21.31
41	22.68	21.86
42	23.26	22.42
43	23.84	23.00
44	24.43	23.58
45	25.04	24.17
46	25.65	24.77
47	26.27	25.39
48	26.91	26.02
49	27.56	26.65
50	28.21	27.30
51	28.88	27.96
52	29.56	28.64
53	30.26	29.32
54	30.96	30.02
55	31.68	30.73

Saturation data derived from reference equations of state. Always cross-check against calibrated gauges.