Material Analysis:
Pipeline solutions for refrigeration and air conditioning, all to EN 12735-1
Our copper tubing is designed specifically for refrigeration and air conditioning use and accordingly cleaned, nitrogen-purged and capped.
Material Grade Phosphorus de-oxidised copper; Cu-DHP or CW024A as defined in BS EN 1976.
Minimum Copper Content 99.90 % (including silver)
Phosphorus 0.015-0.040 %
Total Impurity Maxima 0.060 % (excluding phosphorus and silver)
The melting point of copper is 1083ºC and it has a density of 8.9 gm/cc
BS EN 12735-1 Refrigeration and Air Conditioning Tubes
| Material Temper EN 1173 | Tensile Strength min. (N/mm2) | Elongation min. (%) | Hardness (Indicative) HV5 VPN |
| R220 (soft) | 220 | 40 | 40-70 |
| 250 | 30 | 75-100 | |
| 290 | 3 | Over 100 |
The tables below give the maximum working pressure (MWP)
They have been calculated based on the requirements of EN378:2:2008 using the stress values according to EN 14276.
Although straight tube is supplied in either half hard or fully hard condition, we have also quoted figures based on annealed condition which is representative of the tube in the area immediately surrounding brazed joints.
The maximum test pressure can be 1.5 times that of the (MWP)
| O.D. (inches) | Wall (inches) | Gauge (SWG) | MWP in annealed condition up to 100 c |
| 1/4 | 0.028 | 22 | 125 |
| 5/16 | 0.028 | 22 | 98 |
| 5/16 | 0.036 | 20 | 129 |
| 3/8 | 0.032 | 21 | 81 |
| 1/2 | 0.032 | 21 | 69 |
| 5/8 | 0.036 | 20 | 61 |
| 3/4 | 0.040 | 19 | 54 |
| 7/8 | 0.040 | 19 | 46 |
| O.D. (inches) | Wall (inches) | Gauge (SWG) | MWP in annealed condition at 100deg C | MWP in supplied* condition at 100deg C |
| 3/8” | 0.032 | 21 | 93 | 108 |
| 1/2” | 0.036 | 20 | 78 | 91 |
| 1/2” | 0.048 | 18 | 102 | 118 |
| 5/8” | 0.036 | 20 | 62 | 73 |
| 5/8” | 0.040 | 19 | 67 | 79 |
| 5/8” | 0.048 | 18 | 81 | 95 |
| 3/4” | 0.036 | 20 | 51 | 61 |
| 3/4” | 0.040 | 19 | 57 | 73 |
| 3/4” | 0.048 | 18 | 65 | 77 |
| 3/4” | 0.064 | 16 | 88 | 102 |
| 7/8” | 0.040 | 19 | 46 | 55 |
| 7/8” | 0.048 | 18 | 55 | 66 |
| 7/8” | 0.064 | 16 | 75 | 88 |
| 7/8” | 0.104 | 12 | 125 | 142 |
| 1.1/8” | 0.048 | 18 | 43 | 51 |
| 1.1/8” | 0.064 | 16 | 57 | 68 |
| 1.1/8” | 0.080 | 14 | 72 | 85 |
| 1.3/8” | 0.048 | 18 | 35 | 41 |
| 1.3/8” | 0.064 | 16 | 47 | 55 |
| 1.3/8” | 0.080 | 14 | 59 | 69 |
| 1.3/8” | 0.104 | 12 | 77 | 90 |
| 1.5/8” | 0.048 | 18 | 29 | 35 |
| 1.5/8” | 0.064 | 16 | 39 | 47 |
| 1.5/8” | 0.080 | 14 | 49 | 58 |
| 1.5/8” | 0.104 | 12 | 65 | 76 |
| 1.5/8” | 0.116 | 11 | 73 | 85 |
| 2.1/8” | 0.048 | 18 | 22 | 27 |
| 2.1/8” | 0.064 | 16 | 30 | 35 |
| 2.1/8” | 0.080 | 14 | 37 | 44 |
| 2.1/8” | 0.104 | 12 | 49 | 58 |
| 2.5/8” | 0.048 | 18 | 18 | 25 |
| 2.5/8” | 0.064 | 16 | 24 | 33 |
| 2.5/8” | 0.080 | 14 | 30 | 41 |
| 2.5/8” | 0.104 | 12 | 39 | 54 |
| 3.1/8” | 0.064 | 16 | 20 | 28 |
| 3.1/8” | 0.080 | 14 | 25 | 35 |
| 3.1/8” | 0.104 | 12 | 33 | 45 |
| 3.5/8” | 0.064 | 16 | 17 | 24 |
| 3.5/8” | 0.080 | 14 | 22 | 30 |
| 4.1/8” | 0.064 | 16 | 15 | 21 |
| 4.1/8” | 0.080 | 14 | 19 | 26 |
| 4.1/8” | 0.104 | 12 | 25 | 34 |
Copper Straight Tube
