Maximum Working Pressure Tables – Alloy 400 Annealed Seamless Tube (Nickel, Copper / ASTM B-165 or Equivalent)

Maximum Allowable Working Pressure (PSI) For Fractional Sizes

Tubing OD Wall Thickness (Inches)
.010 .012 .016 .020 .028 .035 .049 .065 .083 .095 .109 .120
1/16 6,422 7,872 10,768 13,484
1/8 6,422 9,325 11,823
3/16 4,081 5,935 7,630 11,005
1/4 4,305 5,518 8,053 10,946
3/8 3,530 5,107 7,029
1/2 2,595 3,721 5,078 6,699
5/8 2,051 2,927 3,970 5,200 6,056
3/4 1,696 2,412 3,259 4,249 4,933 5,755 6,422
7/8 1,446 2,051 2,764 3,592 4,161 4,842 5,391
1 5,040 7,140 9,595 12,445 14,390 16,715 18,585

Factor of Safety = 4, considering tensile strength to be 70,000 PSI at room temperature.

Maximum Allowable Working Pressure (Bar) For Metric Sizes

Tubing OD Wall Thickness (Inches)
0.5 0.6 0.7 0.8 1.0 1.2 1.5 1.6 1.8 2.0 2.2 2.5 3.0
3 464 567 672 775 965
4 335 411 491 567 723 873
6 310 360 464 567 723 775
8 227 262 335 411 528 567
10 206 262 320 411 442
12 169 215 262 335 360 411 464
14 182 222 282 303 345 389 433 500 612
16 158 192 244 262 298 335 372 430 528
18 140 169 215 230 262 294 326 377 464
22 113 137 173 186 211 236 262 301 369
25 99 120 152 162 184 206 228 262 320

Factor of Safety = 4, considering tensile strength to be 482.6 MPa at room temperature.

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