R134a pressure–temperature chart
Saturation pressure and temperature of R134a: convert temperature to pressure or pressure to temperature, and see the full table.
Refrigerant
- Safety class
- A1
- GWP (AR4)
- 1,430
- Temperature glide
- No glide
Saturation point
1.91 barg
2.93 bar a · 27.8 psig
Type: Pure substanceSafety class: A1GWP (AR4): 1,430Temperature glide: No glideCritical point: 101.1 °C · 40.6 bar
R134a — Pressure–temperature table
| °C | °F | bar a | barg | psig |
|---|---|---|---|---|
| -50 | -58.0 | 0.29 | -0.72 | -10.4 |
| -48 | -54.4 | 0.33 | -0.68 | -9.9 |
| -46 | -50.8 | 0.37 | -0.64 | -9.3 |
| -44 | -47.2 | 0.41 | -0.60 | -8.7 |
| -42 | -43.6 | 0.46 | -0.55 | -8 |
| -40 | -40.0 | 0.51 | -0.50 | -7.3 |
| -38 | -36.4 | 0.57 | -0.45 | -6.5 |
| -36 | -32.8 | 0.63 | -0.38 | -5.6 |
| -34 | -29.2 | 0.69 | -0.32 | -4.6 |
| -32 | -25.6 | 0.77 | -0.25 | -3.6 |
| -30 | -22.0 | 0.84 | -0.17 | -2.5 |
| -28 | -18.4 | 0.93 | -0.09 | -1.3 |
| -26 | -14.8 | 1.02 | 0.00 | 0 |
| -24 | -11.2 | 1.11 | 0.10 | 1.4 |
| -22 | -7.6 | 1.22 | 0.20 | 2.9 |
| -20 | -4.0 | 1.33 | 0.31 | 4.6 |
| -18 | -0.4 | 1.45 | 0.43 | 6.3 |
| -16 | 3.2 | 1.57 | 0.56 | 8.1 |
| -14 | 6.8 | 1.71 | 0.69 | 10.1 |
| -12 | 10.4 | 1.85 | 0.84 | 12.2 |
| -10 | 14.0 | 2.01 | 0.99 | 14.4 |
| -8 | 17.6 | 2.17 | 1.16 | 16.8 |
| -6 | 21.2 | 2.34 | 1.33 | 19.3 |
| -4 | 24.8 | 2.53 | 1.51 | 21.9 |
| -2 | 28.4 | 2.72 | 1.71 | 24.8 |
| 0 | 32.0 | 2.93 | 1.91 | 27.8 |
| 2 | 35.6 | 3.15 | 2.13 | 30.9 |
| 4 | 39.2 | 3.38 | 2.36 | 34.3 |
| 6 | 42.8 | 3.62 | 2.61 | 37.8 |
| 8 | 46.4 | 3.88 | 2.86 | 41.5 |
| 10 | 50.0 | 4.15 | 3.13 | 45.4 |
| 12 | 53.6 | 4.43 | 3.42 | 49.5 |
| 14 | 57.2 | 4.73 | 3.71 | 53.9 |
| 16 | 60.8 | 5.04 | 4.03 | 58.4 |
| 18 | 64.4 | 5.37 | 4.36 | 63.2 |
| 20 | 68.0 | 5.72 | 4.70 | 68.2 |
| 22 | 71.6 | 6.08 | 5.06 | 73.5 |
| 24 | 75.2 | 6.46 | 5.44 | 78.9 |
| 26 | 78.8 | 6.85 | 5.84 | 84.7 |
| 28 | 82.4 | 7.27 | 6.25 | 90.7 |
| 30 | 86.0 | 7.70 | 6.69 | 97 |
| 32 | 89.6 | 8.15 | 7.14 | 103.6 |
| 34 | 93.2 | 8.63 | 7.61 | 110.4 |
| 36 | 96.8 | 9.12 | 8.10 | 117.5 |
| 38 | 100.4 | 9.63 | 8.62 | 125 |
| 40 | 104.0 | 10.17 | 9.15 | 132.7 |
| 42 | 107.6 | 10.72 | 9.71 | 140.8 |
| 44 | 111.2 | 11.30 | 10.29 | 149.2 |
| 46 | 114.8 | 11.90 | 10.89 | 157.9 |
| 48 | 118.4 | 12.53 | 11.52 | 167 |
| 50 | 122.0 | 13.18 | 12.17 | 176.4 |
| 52 | 125.6 | 13.85 | 12.84 | 186.2 |
| 54 | 129.2 | 14.56 | 13.54 | 196.4 |
| 56 | 132.8 | 15.28 | 14.27 | 207 |
| 58 | 136.4 | 16.04 | 15.02 | 217.9 |
| 60 | 140.0 | 16.82 | 15.80 | 229.2 |
| 62 | 143.6 | 17.63 | 16.62 | 241 |
| 64 | 147.2 | 18.47 | 17.46 | 253.2 |
| 66 | 150.8 | 19.34 | 18.33 | 265.8 |
| 68 | 154.4 | 20.24 | 19.22 | 278.8 |
| 70 | 158.0 | 21.17 | 20.15 | 292.3 |
bar a = absolute (bar a) · barg = gauge (barg) (bar a − 1,013)
All refrigerants
- R404ANear-azeotropic blend · A1 · GWP 3,9220 °C: 6.10 bar a
- R507AAzeotropic blend · A1 · GWP 3,9850 °C: 6.25 bar a
- R449AZeotropic blend · Temperature glide ≈ 4.5 K · A1 · GWP 1,3970 °C: 6.12 bar a
- R448AZeotropic blend · Temperature glide ≈ 5 K · A1 · GWP 1,3870 °C: 6.24 bar a
- R407CZeotropic blend · Temperature glide ≈ 7 K · A1 · GWP 1,7740 °C: 5.68 bar a
- R410ANear-azeotropic blend · A1 · GWP 2,0880 °C: 7.99 bar a
- R32Pure substance · A2L · GWP 6750 °C: 8.13 bar a
- R22Pure substance · A1 · GWP 1,8100 °C: 4.98 bar a
- R290Pure substance · A3 · GWP 30 °C: 4.74 bar a
- R744Pure substance · A1 · GWP 10 °C: 34.85 bar a
- R717Pure substance · B2L · GWP 00 °C: 4.29 bar a
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