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Technical Library > VALVES > INTRODUCTION TO VALVES > ASME B16.34 Pressure and Temperature Ratings
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ASME B16.34 STANDARD


ASME B16.34 is a key specification for valves manufacturing. In this article, we explain its scope, indicate under which conditions a valve may be considered compliant and show the pressure-temperature ratings foreseen by the norm for three groups of materials.


WHAT IS ASME B16.34?

According to ASME:

ASME B16.34 […] covers pressure-temperature ratings, dimensions, tolerances, materials, nondestructive examination requirements, testing, and marking for cast, forged, and fabricated flanged, threaded, and welding end and wafer or flangeless valves of steel, nickel-base alloys, and other alloys. Wafer or flangeless valves, bolted or through-bolt types, that are installed between flanges or against a flange are treated as flanged-end valves. 

This Standard is to be used in conjunction with equipment described in other volumes of the ASME B16 Series of Standards as well as with other ASME standards, such as the Boiler and Pressure Vessel Code and the B31 Piping Codes. Careful application of these B16 standards will help users to comply with applicable regulations within their jurisdictions, while achieving the operational, cost and safety benefits to be gained from the many industry best-practices detailed within these volumes.

Source: ASME

WHEN DOES A VALVE COMPLY WITH ASME B16.34?

The ASME valve standard B16.34 is a globally accepted standard to design, manufacture and test valves. ASME B16.34 is also mentioned in the more general ASME spec ASME B31.1, “Power Piping Design”. Back in 1988, the scope of this standard was modified to include threaded-end and weld-end valves in addition to flanged-end valves. A valve complies with ASME B16.34 when the following conditions are met:

  • The valves body & shell materials comply with ASME and ASTM material standards for chemistry and strength
  • Body & shell materials are heat-treated to ensure proper grain structure, corrosion resistance, and hardness.
  • Wall thicknesses of body and other pressure-containing components meet ASME B16.34 specified minimum values for each pressure class.
  • NPT and SW end connections comply with ASME B1.20.1 or ASME B16.11.
  • Stems are internally loaded and blowout proof.
  • All bolting will be ASTM grade with maximum applied stress controlled by B16.34.
  • Each valve is shell tested at 1,5x rated pressure for a specific test time duration.
  • Each valve is tested for seat leakage in both directions for a specific test time duration.
  • Each valve is permanently tagged with materials of construction, operating limits and name of the manufacturer.

 


ASME B16.34 PRESSURE TEMPERATURE RATINGS

ASME B16.34 defines the pressure and temperature ratings for forgings, castings, plate, bar and tubular materials – dividing such materials into 3 main groups and several subgroups.

GROUP 1 ASME B16.34 (CARBON AND ALLOY STEEL PIPING MATERIALS)

MaterialGroup No. Material NominalDesignation Forging Casting Plate Bar Tubular
1.1 C
C-SI
C-MN-SIC-MN-SI-V
A105
A350 Gr. LF2A350 Gr. LF6 Cl.1
A216 Gr. WCB A515 Gr. 70
A516 Gr. 70
A537 Gr. Cl.1
A675 Gr. 70
A105
A350 Gr. LF2
A696 Gr. C
A672 Gr. B70
A672 Gr. C70
1.2 C-SI
2 1/2NI
3 1/2NI
C-MN-SIC-MN-SI-V

A350 Gr. LF3

A350 Gr. LF6 Cl.2

A352 Gr. LC2
A352 Gr. LC3
A216 Gr. WCC
A352 Gr. LCC
A203 Gr. B
A203 Gr. E
A350 Gr. LF3 A106 Gr. C
1.3 C
C-SI
2 1/2NI
3 1/2NI
C-MN-SI
A352 Gr. LCB A515 Gr. 65
A203 Gr. A
A203 Gr. D
A516 Gr. 65
A675 Gr. 65 A672 Gr. B65
A672 Gr. C65
1.4 C
C-SIC-MN-SI
A350 Gr. LF1 A515 Gr. 60A516 Gr. 60 A675 Gr. 60
A350 Gr. LF1
A696 Gr. B
A106 Gr. B
A672 Gr. B60
A672 Gr. C60
1.5 C-1/2MO A182 Gr. F1 A217 Gr. WC1
A352 Gr. LC1
A204 Gr. A
A204 Gr. B
A182 Gr. F1 A691 Gr. CM-70
1.6

C-1/2MO1/2CR-1/2MO

1CR-1/2MO

A387 Gr. 2 Cl.1
A387 Gr. 2 Cl.2
A387 Gr. 12 Cl.1
A335 Gr. P1
A369 Gr. FP1
A691 Gr. 1/2CR
1.7 C-1/2MO
1/2CR-1/2MO
NI-1/2CR-1/2MO
3/4NI-MO-3/4CR
A182 Gr. F2 A217 Gr. WC4
A217 Gr. WC5
A204 Gr. C A182 Gr. F2 A691 Gr. MC-75
1.8 1CR-1/2MO
1 1/4CR-1/2MO-SI2 1/4CR-1MO
A387 Gr. 12 Cl.2
A387 Gr. 11 Cl.1A387 Gr. 22 Cl.1
A691 Gr. 1CR
A335 Gr. P12
A369 Gr. FP12
A691 Gr. 1 1/4CR
A335 Gr. P11
A369 Gr. FP11
A691 Gr. 2 1/4CR
A335 Gr. P22
A369 Gr. FP22
1.9 1CR-1/2MO
1 1/4CR-1/2MO-SI
1 1/4CR-1/2MO
A182 Gr. F12 Cl.2
A182 Gr. F11 Cl.2
A217 Gr. WC6 A387 Gr. 11 Cl.2 A182 Gr. F12 Cl.2
A182 Gr. F11 Cl.2
A739 Gr. B11
1.10 2 1/4CR-1MO A182 Gr. F22 Cl.3 A217 Gr. WC9 A387 Gr. 22 Cl.2 A182 Gr. F22 Cl.3
A739 Gr. B22
1.11 3CR-1MO
MN-1/2MO
MN-s1/2MO-1/2NI
MN-1/2MO-3/4NI
C-MN-SI
A182 Gr. F21 A387 Gr. 21 Cl.2
A302 Gr. A & B
A302 Gr. C
A302 Gr. D
A537 Gr. CL2
A182 Gr. F21
1.12 5CR-1/2MO
5CR-1/2MO-SI
A387 Gr. 5 Cl.1
A387 Gr. 5 Cl.2
A691 Gr. 5CR
A335 Gr. P5
A369 Gr. FP5
A335 Gr. P5b
1.13 5CR-1/2MO A182 Gr. F5a
A182 Gr. F5
A217 Gr. C5 A182 Gr. F5a
A182 Gr. F5
1.14 9CR-1MO A182 Gr. F9 A217 Gr. C12 A182 Gr. F9
1.15 9CR-1MO-V A182 Gr. F51 A217 Gr. C12A A387 Gr. 91 Cl.2 A182 Gr. F91 A335 Gr. P91

GROUP 1.1 ASME B16.34

MaterialGroup No. Material NominalDesignation Forging Casting Plate Bar Tubular
1.1 C
C-SI
C-MN-SIC-MN-SI-V

A105 [1] [6]

A350 Gr. LF2 [1]

A350 Gr. LF6 Cl.1 [7]

A216 Gr. WCB [1] A515 Gr. 70 [1]
A516 Gr. 70 [1] [2]
A537 Gr. Cl.1 [3]
A675 Gr. 70 [1] [4] [5]
A105 [1] [6]
A350 Gr. LF2 [1]
A696 Gr. C
A672 Gr. B70 [1]
A672 Gr. C70 [1]

[1] Upon prolonged exposure to temperatures above 800°F, the carbide phase of the steel may be converted to graphite. Permissible, but not recommended for prolonged use above 800°F.
[2] Not to be used over 850°F.
[3] Not to be used over 700°F.
[4] Leaded grades shall not be used where welded of in any application above 500°F.
[5] For service temperatures above 850°F, it is recommended that killed steels containing not less than 0.10% residual silicon be used.
[6] Only killed steel shall be used above 850°F.
[7] Not to be used over 500°F.

 

Maximum gage pressure (in psi) by temperature for Group 1.1 ASME B16.34 materials
Temp. °F 150# 300# 400# 600# 900# 1500# 2500#
-20 to 100 285 700 900 1480 2220 3705 6170
200 260 675 900 1350 2025 3375 5625
300 230 655 875 1315 1970 3280 5470
400 200 635 845 1270 1900 3170 5280
500 170 600 800 1200 1795 2995 4990
600 140 550 730 1095 1640 3735 4560
650 125 535 715 1075 1610 2685 4475
700 110 535 710 1005 1600 2665 4440
750 95 505 670 1010 1510 2520 4200
800 80 410 550 825 1235 2060 3430
850 65 270 355 535 805 1340 2230
900 50 170 230 345 515 860 1430
950 35 105 140 205 310 515 860
1000 20 50 70 105 155 260 430

GROUP 1.2 ASME B16.34

MaterialGroup No. Material NominalDesignation Forging Casting Plate Bar Tubular
1.2 C-SI
2 1/2 NI
3 1/2 NI
C-MN-SIC-MN-SI-V

A350 Gr. LF3 [2]

A350 Gr. LF6 Cl.2 [4]

A352 Gr. LC2 [2]
A352 Gr. LC3 [2]
A216 Gr. WCC [1]
A352 Gr. LCC [2]
A203 Gr. B [1]
A203 Gr. E [1]
A350 Gr. LF3 [2] A106 Gr. C [3]

[1] Upon prolonged exposure to temperatures above 800°F, the carbide phase of the steel may be converted to graphite. Permissible, but not recommended for prolonged use above 800°F.
[2] Not to be used over 650°F.
[3] Not to be used over 800°F.
[4] Not to be used over 500°F.

 

Maximum gage pressure (in psi) by temperature for Group 1.2 ASME B16.34 materials
Temp. °F 150 300 400 600 900 1500 2500
-20 to 100 290 750 1000 1500 2250 3750 6250
200 260 750 1000 1500 2250 3750 6250
300 230 730 970 1455 2185 3640 6070
400 200 705 940 1410 2115 3530 5880
500 170 665 885 1330 1995 3325 5540
600 140 605 805 1210 1815 3025 5040
650 125 590 785 1175 1765 2940 4905
700 110 570 755 1135 1705 2840 4730
750 95 505 670 1010 1510 2520 4200
800 80 410 550 825 1235 2060 3430
850 65 270 355 535 805 1340 2230
900 50 170 230 345 515 860 1430
950 35 105 140 205 310 515 860
1000 20 50 70 105 155 260 430

GROUP 1.3 ASME B16.34

MaterialGroup No. Material NominalDesignation Forging Casting Plate Bar Tubular
1.3 C
C-SI
2 1/2 NI
3 1/2 NI
C-MN-SI
A352 Gr. LCB [5] A515 Gr. 65 [1]
A203 Gr. A [1]
A203 Gr. D [1]
A516 Gr. 65 [1] [2]
A675 Gr. 65 [1] [3] [4] A672 Gr. B65 [1]
A672 Gr. C65 [1]

[1] Upon prolonged exposure to temperatures above 800°F, the carbide phase of the steel may be converted to graphite. Permissible, but not recommended for prolonged use above 800°F.
[2] Not to be used over 850°F.
[3] Leaded grades shall not be used where welded of in any application above 500°F.
[4] For service temperatures above 850°F, it is recommended that killed steel containing not less than 0.10% residual silicon be used.
[5] Not to be used over 650°F.

 

Maximum gage pressure (in psi) by temperature for Group 1.3 ASME B16.34 materials
Temp. °F 150 300 400 600 900 1500 2500
-20 to 100 265 695 925 1390 2085 3470 5785
200 250 655 875 1315 1970 3280 5470
300 230 640 850 1275 1915 3190 5315
400 200 620 825 1235 1850 3085 5145
500 170 585 775 1165 1745 2910 4850
600 140 535 710 1065 1600 2665 4440
650 125 525 695 1045 1570 2615 4355
700 110 520 690 1035 1555 2590 4320
750 95 475 630 945 1420 2365 3945
800 80 390 520 780 1175 1955 3260
850 65 270 355 535 805 1340 2230
900 50 170 230 345 515 860 1430
950 35 105 140 205 310 515 860
1000 20 50 70 105 155 260 430

GROUP 1.4 ASME B16.34

MaterialGroup No. Material NominalDesignation Forging Casting Plate Bar Tubular
1.4 C
C-SIC-MN-SI
A350 Gr. LF1 [1] A515 Gr. 60 [1] [2]A516 Gr. 60 [1] [2] A675 Gr. 60 [1] [2] [3]
A350 Gr. LF1 [1]
A696 Gr. B
A106 Gr. B [1]
A672 Gr. B60 [1]
A672 Gr. C60 [1]

[1] Upon prolonged exposure to temperatures above 800°F, the carbide phase of the steel may be converted to graphite. Permissible, but not recommended for prolonged use above 800°F.
[2] Not to be used over 850°F.
[3] Leaded grades shall not be used where welded of in any application above 500°F.

 

Maximum gage pressure (in psi) by temperature for Group 1.4 ASME B16.34 materials:
Temp. °F 150 300 400 600 900 1500 2500
-20 to 100 235 620 825 1235 1850 3085 1545
200 215 560 750 1125 1685 2810 4680
300 210 550 730 1095 1640 2735 4560
400 200 530 705 1060 1585 2645 4405
500 170 500 665 995 1495 2490 4150
600 140 455 610 915 1370 2285 3805
650 125 450 600 895 1345 2245 3740
700 110 450 600 895 1345 2245 3740
750 95 445 590 885 1325 2210 3685
800 80 370 495 740 1110 1850 3085
850 65 270 355 535 805 1340 2230
900 50 170 230 345 515 860 1430
950 35 105 140 205 310 515 860
1000 20 50 70 105 155 260 430

GROUP 1.5 ASME B16.34

MaterialGroup No. Material NominalDesignation Forging Casting Plate Bar Tubular
1.5 C-1/2MO A182 Gr. F1 [1] A217 Gr. WC1 [1] [2]
A352 Gr. LC1 [3]
A204 Gr. A [1]
A204 Gr. B
A182 Gr. F1 [1] A691 Gr. CM-70 [1]

[1] Upon prolonged exposure to temperatures above 875°F, the carbide phase of carbon-molybdenum steel may be converted to graphite. Permissible, but not recommended for prolonged use above 875°F.
[2] Use normalized and tempered material only.
[3] Not to be used over 650°F.

 

Maximum gage pressure (in psi) by temperature for Group 1.5 ASME B16.34 materials
Temp. °F 150 300 400 600 900 1500 2500
-20 to 100 265 695 925 1390 2085 3470 5785
200 260 680 905 1360 2035 3395 5660
300 230 655 870 1305 1955 3260 5435
400 200 640 855 1280 1920 3200 5330
500 170 620 830 1245 1865 3105 5180
600 140 605 805 1210 1815 3025 5040
650 125 590 785 1175 1765 2940 4905
700 110 570 755 1135 1705 2840 4730
750 95 530 710 1065 1595 2660 4430
800 80 510 675 1015 1525 2540 4230
850 65 485 650 975 1460 2435 4060
900 50 450 600 900 1350 2245 3745
950 35 280 375 560 845 1405 2345
1000 20 165 220 330 495 825 1370

 GROUP 1.6 ASME B16.34

MaterialGroup No. Material NominalDesignation Forging Casting Plate Bar Tubular
1.6

C-1/2MO1/2CR-1/2MO

1CR-1/2MO

A387 Gr. 2 Cl.1 [3]
A387 Gr. 2 Cl.2 [3]
A387 Gr. 12 Cl.1 [2]
A335 Gr. P1 [1] [3]
A369 Gr. FP1 [1] [3]
A691 Gr. 1/2CR [3]

[1] Upon prolonged exposure to temperatures above 875°F, the carbide phase of carbon-molybdenum steel may be converted to graphite. Permissible, but not recommended for prolonged use above 875°F.
[2] Permissible, but not recommended for prolonged use above 1100°F.
[3] Not to be used over 1000°F.

 

Maximum gage pressure (in psi) by temperature for Group 1.6 ASME B16.34 materials
Temp. °F 150 300 400 600 900 1500 2500
-20 to 100 225 590 790 1185 1775 2955 4930
200 225 590 790 1185 1775 2955 4930
300 225 590 790 1185 1775 2955 4930
400 200 570 765 1145 1775 2860 4765
500 170 550 735 1105 1655 2755 4595
600 140 535 710 1065 1600 2665 4440
650 125 525 695 1045 1570 2615 4355
700 110 510 685 1025 1535 2560 4270
750 95 475 630 945 1420 2365 3945
800 80 475 630 945 1420 2365 3945
850 65 460 615 920 1380 2295 3830
900 50 440 590 885 1325 2210 3685
950 35 315 420 630 945 1575 2630
1000 20 200 270 405 605 1010 1685
1050 20 [1] 155 205 310 465 770 1285
1100 20 [1] 95 130 190 290 480 800
1150 20 [1] 60 80 125 185 310 515
1200 15 [1] 40 50 75 115 190 315

GROUP 2 ASME B16.34 (AUSTENITIC STAINLESS STEEL)

MaterialGroup No. Material NominalDesignation Forging Casting Plate Bar Tubular
2.1 18CR-8NI A182 Gr. F304
A182 Gr. F304H
A351 Gr. CF3
A351 Gr. CF8
A240 Gr. 304
A240 Gr. 340H
A182 Gr. F304
A182 Gr. F304H
A479 Gr. 304
A479 Gr. 304H
A312 Gr. TP304
A312 Gr. TP304H
A358 Gr. 304
A376 Gr. TP304
A376 Gr. TP304H
A430 Gr. FP304
A430 Gr. FP304H
2.2

16CR-12NI-2MO

18CR-8NI18CR-13NI-3MO
16CR-12NI-2MO

19CR-10NI-3MO

A182 Gr. F316
A182 Gr. F316H
A351 Gr. CF3A
A351 Gr. CF8AA351 Gr. CF3M
A351 Gr. CF8M
A351 Gr. CG8M
A240 Gr. 316
A240 Gr. 316HA240 Gr. 317
A182 Gr. F316
A182 Gr. F316H
A479 Gr. 316
A479 Gr. 316H
A312 Gr. TP316
A312 Gr. TP316H
A358 Gr. 316
A376 Gr. TP316
A376 Gr. TP316H
A430 Gr. FP316
A430 Gr. FP316HA312 Gr. TP317
2.3

18CR-8NI

16CR-12NI-2MO

A182 Gr. F304LA182 Gr. F316L A240 Gr. 304LA240 Gr. 316L A182 Gr. F304L
A479 Gr. 304L
A182 Gr. F316L
A479 Gr. 316L

A312 Gr. TP304L

A312 Gr. TP316L

2.4

18CR-10NI-TI

 

A182 Gr. F321
A182 Gr. F321H
A240 Gr. 321
A240 Gr. 321H
A182 Gr. F321
A479 Gr. 321
A182 Gr. F321H
A479 Gr. 321H
A312 Gr. TP321
A312 Gr. TP321H
A358 Gr. 321
A376 Gr. TP321
A376 Gr. TP321H
A430 Gr. FP321
A430 Gr. FP321H
2.5 18CR-10NI-CB A182 Gr. F347
A182 Gr. F347H
A182 Gr. F348
A182 Gr. F348H
A351 Gr. CF8C A240 Gr. 347
A240 Gr. 347H
A240 Gr. 348
A240 Gr. 348H
A182 Gr. F347
A182 Gr. F347H
A182 Gr. F348
A182 Gr. F348H
A479 Gr. 347A479 Gr. 347H
A479 Gr. 348
A479 Gr. 348H
A312 Gr. TP347
A312 Gr. TP347H
A358 Gr. TP347
A376 Gr. TP347
A376 Gr. TP347H
A376 Gr. TP348
A430 Gr. FP347
A430 Gr. FP347H
A312 Gr. TP348
A312 Gr. TP348H
2.6

25CR-12NI

23CR-12NI

A351 Gr. CH8
A351 Gr. CH20
A240 Gr. 309S
A240 Gr. 309H
A312 Gr. TP309H
A358 Gr. 309H
2.7 25CR-20NI A182 Gr. F310H A351 Gr. CK20 A240 Gr. 310S
A240 Gr. 310H
A182 Gr. F310H
A479 Gr. 310H
A479 Gr. 310S
A312 Gr. TP310HA358 Gr. 310H
2.8

20CR-18NI-6MO

22CR-5NI-3MO-N

25CR-7NI-4MO-N24CR-10NI-4MO-V
25CR-5NI-2MO-2CU
25CR-7NI-3.5MO-W-CB
25CR-7NI-3.5MO-N-CB-W

A182 Gr. F44A182 Gr. F51

A182 Gr. F53

A182 Gr. F55

A351 Gr. CK3MCuN

A351 Gr. CE8MN
A351 Gr. CD4MCu
A351 Gr. CD3MWCuN

A240 Gr. S31254A240 Gr. S31803

A240 Gr. S32750

A240 Gr. S32760

A479 Gr. S31254
A479 Gr. S31803
A479 Gr. S32750
A312 Gr. S31254
A358 Gr. S31254
A789 Gr. S31803
A790 Gr. S31803
A789 Gr. S32750
A790 Gr. S32750
A789 Gr. S32760
A790 Gr. S32760

 GROUP 2.1 ASME B16.34

MaterialGroup No. Material NominalDesignation Forging Casting Plate Bar Tubular
2.1 18CR-8NI A182 Gr. F304 [1]
A182 Gr. F304H
A351 Gr. CF3 [2]
A351 Gr. CF8 [1]
A240 Gr. 304 [1]
A240 Gr. 340H
A182 Gr. F304 [1]
A182 Gr. F304H
A479 Gr. 304 [1]
A479 Gr. 304H
A312 Gr. TP304 [1]
A312 Gr. TP304H
A358 Gr. 304 [1]
A376 Gr. TP304 [1]
A376 Gr. TP304H
A430 Gr. FP304 [1]
A430 Gr. FP304H

[1] At temperatures over 1000°F, use only when the carbon content is 0.04% or higher.
[2] Not to be used over 800°F.

 

Maximum gage pressure (in psi) by temperature for Group 2.1 ASME B16.34 materials
Temp. °F 150 300 400 600 900 1500 2500
-20 to 100 275 720 960 1440 2160 3600 6000
200 230 600 800 1200 1800 3000 5000
300 205 540 720 1080 1620 2700 4500
400 190 495 660 995 1490 2485 4140
500 170 465 620 930 1395 2330 3880
600 140 435 580 875 1310 2185 3640
650 125 430 575 860 1290 2150 3580
700 110 425 565 850 1275 2125 3540
750 95 415 555 830 1245 2075 3460
800 80 405 540 805 1210 2015 3360
850 65 395 530 790 1190 1980 3300
900 50 390 520 780 1165 1945 3240
950 35 380 510 765 1145 1910 3180
1000 20 320 430 640 965 1605 2675
1050 20 [1] 310 410 615 925 1545 2570
1100 20 [1] 255 345 515 770 1285 2145
1150 20 [1] 200 265 400 595 995 1655
1200 20 [1] 155 205 310 465 770 1285
1250 20 [1] 115 150 225 340 565 945
1300 20 [1] 85 115 170 255 430 715
1350 20 [1] 60 80 125 185 310 515
1400 20 [1] 50 65 95 145 240 400
1450 15 [1] 35 45 70 105 170 285
1500 10 [1] 25 35 55 80 135 230

[1] Use with buttweld valves only. Flanged end rating stop at 1000°F.

GROUP 2.2 ASME B16.34

MaterialGroup No. Material NominalDesignation Forging Casting Plate Bar Tubular
2.2

16CR-12NI-2MO

18CR-8NI18CR-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. 316HA240 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. FP316HA312 Gr. TP317 [1]

[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.

 

Maximum gage pressure (in psi) by temperature for Group 2.2 ASME B16.34 materials
Temp. °F 150 300 400 600 900 1500 2500
-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

[1] Use with buttweld valves only. Flanged end rating stops at 1000°F.

GROUP 3 ASME B16.34 (NICKEL ALLOYS)

MaterialGroup No. Material NominalDesignation Forging Casting Plate Bar Tubular
3.1 35NI-35FE-20CR-CB B462 Gr. N08020 B463 Gr. N08020 B473 Gr. N08020 B464 Gr. N08020
B468 Gr. N08020
3.2 99NI B160 Gr. N02200 B162 Gr. N02200 B160 Gr. N02200 B161 Gr. N02200
B163 Gr. N02200
3.3 99NI-Low C B160 Gr. N02201 B162 Gr. N02201 B160 Gr. N02201
3.4 67NI-30CU67NI-30CU-S B564 Gr. N04400B564 Gr. N04405 B127 Gr. N04400 B164 Gr. N04400B164 Gr. N04405 B165 Gr. N04400
B163 Gr. N04400
3.5 72NI-15CR-8FE B564 Gr. N06600 B168 Gr. N06600 B166 Gr. N06600 B167 Gr. N06600
B163 Gr. N06600
3.6 33NI-42FE-21CR B564 Gr. N08800 B409 Gr. N08800 B408 Gr. N08800 B163 Gr. N08800
3.7 65NI-28MO-2FE B335 Gr. N10665 B333 Gr. N10665 B335 Gr. N10665 B662 Gr. N10665
3.8 54NI-16MO-15CR
60NI-22CR-9MO-3.5CB
62NI-28MO-5FE
70NI-16MO-7CR-5FE
61NI-16MO-16CR
42NI-21.5CR-3MO-2.3CU
B564 Gr. N10276
B564 Gr. N06625
B335 Gr. N10001
B573 Gr. N10003
B574 Gr. N06455
B425 Gr. N08825
B575 Gr. N10276
B443 Gr. N06625
B333 Gr. N10001
B434 Gr. N10003
B575 Gr. N06455
B424 Gr. N08825
B574 Gr. N10276
B446 Gr. N06625
B335 Gr. N10001
B573 Gr. N10003
B574 Gr. N06455
B425 Gr. N08825
B622 Gr. N10276B622 Gr. N10001B622 Gr. N06455
B423 Gr. N08825
3.9 47NI-22CR-9MO-18FE B572 Gr. N06002 B435 Gr. N06002 B572 Gr. N06002 B622 Gr. N06002
3.10 25NI-47FE-21CR-5MO B672 Gr. N08700 B599 Gr. N08700 B672 Gr. N08700
3.11 44FE-25NI-21CR-MO B649 Gr. N08904 B625 Gr. N08904 B649 Gr. N08904 B677 Gr. N08904
3.12 26NI-43FE-22CR-5MO
47NI-22CR-20FE-7MO
B621 Gr. N08320
B581 Gr. N06985
B620 Gr. N08320
B582 Gr. N06985
B621 Gr. N08320
B581 Gr. N06985
B622 Gr. N08320
B622 Gr. N06985
3.13 49NI-25CR-18FE-6MO
NI-FE-CR-MO-CU-Low C
B581 Gr. N06975
B564 Gr. N08031
B582 Gr. N06975
B625 Gr. N08031
B581 Gr. N06975
B649 Gr. N08031
B622 Gr. N06975
B622 Gr. N08031
3.14 47NI-22CR-19FE-6MO B581 Gr. N06007 B582 Gr. N06007 B581 Gr. N06007 B622 Gr. N06007
3.15 33NI-2FE-21CR
NI-MO
NI-MO-CR
B564 Gr. N08810 B494 Gr. N-12MW
B494 Gr. CW-12MW
B409 Gr. N08810 B408 Gr. N08810 B407 Gr. N08810
3.16 35NI-19CR-1 1/4SI B511 Gr. N08330 B536 Gr. N08330 B511 Gr. N08330 B535 Gr. N08330
3.17 29NI-20.5CR-3.5CU-2.5MO A351 Gr. CN-7M

 

Maximum gage pressure (in psi) by temperature for Group 3.1 ASME B16.34 materials
Temp. °F 150 300 400 600 900 1500 2500
-20 to 100 290 750 1000 1500 2250 3750 6250
200 260 720 960 1440 2160 3600 6000
300 230 715 950 1425 2140 3565 5940
400 200 675 900 1345 2020 3365 5610
500 170 655 875 1310 1965 3275 5460
600 140 605 805 1210 1815 3025 5040
650 125 590 785 1175 1765 2940 4905
700 110 570 755 1135 1705 2840 4730
750 95 530 710 1065 1595 2660 4430
800 80 510 675 1015 1525 2540 4230
Maximum gage pressure (in psi) by temperature for Group 3.2 ASME B16.34 materials
Temp. °F 150 300 400 600 900 1500 2500
-20 to 100 140 360 480 720 1080 1800 3000
200 140 360 480 720 1080 1800 3000
300 140 360 480 720 1080 1800 3000
400 140 360 480 720 1080 1800 3000
500 140 360 480 720 1080 1800 3000
600 140 360 480 720 1080 1800 3000
Maximum gage pressure (in psi) by temperature for Group 3.3 ASME B16.34 materials
Temp. °F 150 300 400 600 900 1500 2500
-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

[1] Use with buttweld valves only. Flanged end rating stop at 1000°F.

 Maximum gage pressure (in psi) by temperature for Group 3.4 ASME B16.34 materials
Temp. °F 150 300 400 600 900 1500 2500
200 200 530 705 1055 1585 2640 4400
300 190 495 660 990 1485 2470 4120
400 185 480 635 955 1435 2390 3980
500 170 475 635 950 1435 2375 3960
600 140 475 635 950 1435 2375 3960
650 125 475 635 950 1435 2375 3960
700 110 475 635 950 1435 2375 3960
750 95 470 625 935 1405 2340 3900
800 80 460 610 915 1375 2290 3820
850 65 340 455 680 1020 1695 2830
900 50 245 330 495 740 1235 2055

 

 Maximum gage pressure (in psi) by temperature for Group 3.5 ASME B16.34 materials
Temp. °F 150 300 400 600 900 1500 2500
-20 to 100 290 750 1000 1500 2250 3750 6250
200 260 750 1000 1500 2250 3750 6250
300 230 730 970 1455 2185 3640 6070
400 200 705 940 1410 2115 3530 5880
500 170 665 885 1330 1995 3325 5540
600 140 605 805 1210 1815 3025 5040
650 125 590 785 1175 1765 2940 4905
700 110 570 755 1135 1705 2840 4730
750 95 530 710 1065 1595 2660 4430
800 80 510 675 1015 1525 2540 4230
850 65 485 650 975 1460 2435 4060
900 50 450 600 900 1350 2245 3745
950 35 325 435 655 980 1635 2725
1000 20 215 290 430 650 1080 1800
1050 20 [1] 140 185 280 415 695 1155
1100 20 [1] 95 125 185 280 465 770
1150 20 [1] 70 90 135 205 340 565
1200 20 [1] 60 80 125 185 310 515

[1] Use with buttweld valves only. Flanged end rating stop at 1000°F.

 Maximum gage pressure (in psi) by temperature for Group 3.10 ASME B16.34 materials
Temp. °F 150 300 400 600 900 1500 2500
-20 to 100 275 720 960 1440 2160 3600 6000
200 260 720 960 1440 2160 3600 6000
300 230 680 905 1360 2040 3400 5670
400 200 640 855 1280 1920 3205 5340
500 170 610 815 1225 1835 3060 5100
600 140 595 790 1190 1780 2970 4950
650 125 570 760 1140 1705 2845 4740

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