ASME B16.34 - Group 2.2, 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 B16.3 - Materials in Group 2.2 - Austenitic Steel

  • [1] At temperatures over 1000°F, use only when carbon content is 0.04% or higher.
  • [2] Not to be used over 650°F.
  • [3] Not to be used over 850°F.
  • [4] Not to be used over 1000°F.
Material

Group No.

Material Nominal

Designation

ForgingCastingPlateBarTubular
2.2 16CR-12NI-2MO





18CR-8NI

18CR-13NI-3MO
16CR-12NI-2MO

19CR-10NI-3MO

A182 Gr. F316 [1]
A182 Gr. F316H







 







A351 Gr. CF3A [2]
A351 Gr. CF8A [2]

A351 Gr. CF3M [3]
A351 Gr. CF8M [1]
A351 Gr. CG8M [4]

A240 Gr. 316 [1]
A240 Gr. 316H





A240 Gr. 317 [1]

 

A182 Gr. F316 [1]
A182 Gr. F316H
A479 Gr. 316 [1]
A479 Gr. 316H


 

 

A312 Gr. TP316 [1]
A312 Gr. TP316H
A358 Gr. 316 [1]
A376 Gr. TP316 [1]
A376 Gr. TP316H
A430 Gr. FP316 [1]
A430 Gr. FP316H


A312 Gr. TP317 [1]

ASME B16.34 - Material Group 2.2 - 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 100 275 720 960 1440 2160 3600 6000
200 235 620 825 1240 1860 3095 5160
300 215 560 745 1120 1680 2795 4660
400 195 515 685 1025 1540 2570 4280
500 170 480 635 955 1435 2390 3980
600 140 450 600 900 1355 2255 3760
650 125 445 590 890 1330 2220 3700
700 110 430 580 870 1305 2170 3620
750 95 425 570 855 1280 2135 3560
800 80 420 565 845 1265 2110 3520
850 65 420 555 835 1255 2090 3480
900 50 415 555 830 1245 2075 3460
950 35 385 515 775 1160 1930 3220
1000 20 350 465 700 1050 1750 2915
1050 20 [1] 345 460 685 1030 1720 2865
1100 20 [1] 305 405 610 915 1525 2545
1150 20 [1] 235 315 475 710 1185 1970
1200 20 [1] 185 245 370 555 925 1545
1250 20 [1] 145 195 295 440 735 1230
1300 20 [1] 115 155 235 350 585 970
1350 20 [1] 95 130 190 290 480 800
1400 20 [1] 75 100 150 225 380 630
1450 20 [1] 60 80 115 175 290 485
1500 20 [1] 40 55 85 125 205 345