ASME B16.34 - Group 3.3, Pres-Temp Rating

Written by Jerry Ratzlaff on . Posted in American Society of Mechanical Engineers

American Society of Mechanical Engineers (ASME)

standards

  • ASME B16.34 - Valves Flanged, Threaded and Welding End

ASME B16.34 - Materials in Group 3.3 - Nickel and Nickel Alloy

  • [1] Use annealed material only.
  • [2] For forgings, the chemical composition, mechanical properties, heat treating requirements, and grain size requirements shall conform to the applicable ASTM specification. The manufacturing procedures, tolerances, tests, certification, and markings shall be in accordance with ASTM B564.
Material

Group No.

Material Nominal

Designation

ForgingCastingPlateBarTubular
3.3 99NI-Low C B160 Gr. N02201 [1] [2] - B162 Gr. N02201 [1] B160 Gr. N02201 [1] [2] -

ASME B16.34 - Material Group 3.3 - Standard Class, Pressure-Temperature Rating

  • Ratings are maximum allowable working gage pressure (psig) at the temperature listed.
  • [1] Use with buttweld valves only. Flanged end rating stop at 1000°F.
Temp. °F15030040060090015002500
-20 to 100 90 240 320 480 720 1200 2000
200 85 230 305 455 685 1140 1900
300 85 225 300 445 670 1115 1860
400 85 215 290 430 650 1080 1800
500 85 215 290 430 650 1080 1800
600 85 215 290 430 650 1080 1800
650 85 215 290 430 650 1080 1800
700 85 215 290 430 650 1080 1800
750 80 210 280 420 635 1055 1760
800 80 205 270 410 610 1020 1700
850 65 205 270 410 610 1020 1700
900 50 140 185 280 415 695 1155
950 35 115 150 230 345 570 950
1000 20 95 125 185 280 465 770
1050 20 [1] 75 100 150 220 370 615
1100 20 [1] 60 80 125 185 310 515
1150 20 [1] 45 60 95 140 230 385
1200 15 [1] 35 50 75 110 185 310