Home R-454B

R-454B PT Chart

A2L GWP 466

Zeotropic blend (R-32/R-1234yf, 68.9/31.1). HFO/HFC Blend.

🆕 NEW STANDARD — Mandatory for new equipment since Jan 2025

Boiling Point
-58.9°F
-50.5°C
Critical Temp
—°F
—°C
Critical Pressure
— psia
— bar

R-454B Pressure-Temperature Graph

R-454B Saturation Pressure Table

Blue values indicate vacuum (below atmospheric pressure).

°F °C PSIG PSIA kPa bar
-80-62.2-6.87.8554.10.541
-75-59.4-5.59.1863.30.633
-70-56.7-4.010.6773.60.736
-65-53.9-2.312.3685.20.852
-60-51.1-0.414.2598.20.982
-55-48.31.716.36112.81.128
-50-45.64.018.72129.01.29
-45-42.86.621.33147.11.471
-40-40.09.524.23167.01.67
-35-37.212.727.42189.11.891
-30-34.416.230.93213.32.133
-25-31.720.134.79239.92.399
-20-28.924.339.01268.92.689
-15-26.128.943.61300.73.007
-10-23.333.948.62335.23.352
-5-20.639.454.07372.83.728
0-17.845.359.97413.54.135
5-15.051.766.35457.54.575
10-12.258.573.24505.05.05
15-9.466.080.66556.15.561
20-6.773.988.64611.16.111
25-3.982.597.2670.26.702
30-1.191.7106.37733.47.334
351.7101.5116.18801.18.011
404.4112.0126.66873.38.733
457.2123.1137.84950.49.504
5010.0135.0149.741032.410.324
5512.8147.7162.41119.711.197
6015.6161.1175.841212.412.124
6518.3175.4190.091310.613.106
7021.1190.5205.21414.814.148
7523.9206.5221.181525.015.25
8026.7223.4238.081641.516.415
8529.4241.2255.921764.517.645
9032.2260.0274.741894.318.943
9535.0279.9294.582031.120.311
10037.8300.8315.472175.121.751
10540.6322.8337.462326.723.267
11043.3345.9360.572486.124.861
11546.1370.2384.862653.526.535
12048.9395.7410.362829.328.293
12551.7422.4437.113013.830.138
13054.4450.5465.173207.332.073
15568.3612.2626.944322.643.226
16071.1649.3664.044578.445.784
16573.9688.2702.94846.348.463

Properties

ASHRAE Designation454B
Safety ClassificationA2L (mildly flammable)
GWP (AR5)466
ODP0
Molecular Weight62.61 g/mol
Boiling Point (1 atm)-58.9°F / -50.5°C
Critical Temperature—°F / —°C
Critical Pressure— psia / — bar
CategoryHFO/HFC Blend

Common Applications