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Maximum Working Pressure Tables - Alloy C276 Welded Tube
(Nickel, Molybdenum, Chromium / ASTM B-626 or Equivalent)

Maxium Allowable Working Pressure (PSI) For Fractional Sizes

Tubing OD (Inches)Wall Thickness (Inches)
.010.012.016.020.028.035.049.065.083.095.109.120
1/167,7809,53513,04416,334        
1/8   7,78011,29714,322      
3/16   4,9437,1919,24313,332     
1/4    5,2156,6849,75613,260    
3/8     4,2766,1868,516    
1/2     3,1434,5096,1528,115   
5/8     2,4863,5464,8106,3007,337  
3/4     2,0562,9233,9475,1475,9766,9747,780
7/8     1,7512,4863,3494,3525,0415,8666,531
1     1,5262,1622,9063,7694,3585,0625,628
Factor of Safety = 4, considering tensile strength to be 100,000 PSI at room temperature,
and a weld joing efficiency factor of approximately 0.85

Maxium Allowable Working Pressure (Bar) For Metric Sizes

Tubing OD (Inches)Wall Thickness (Inches)
0.50.60.70.81.01.21.51.61.82.02.22.53.0
35626888149391169        
44064985956888771058       
6  376435562688877939     
8  275318406498641688     
10   250318388498536     
12   206261318406436498562   
14    221269343368419472   
16    192233296318361406452522641
18    170206261280318357396457562
22    138167211226256287318365447
25    121146184197223250277318388

Information for reference purposes only. Corrosion Materials in not liable for any damages that may result from the use of this information.