ASME B16.34 specifies pressure and temperature ratings for valves
ASME B16.34 specifies pressure and temperature ratings for valves in different classes, ranging from 150 to 4500, guiding their safe use across varying operational conditions. It categorizes valve materials into groups based on their properties, such as carbon steel, stainless steel, and various alloys, to ensure compatibility with specific pressure and temperature conditions. This system facilitates the selection of appropriate valve materials for safety and efficiency in applications, considering factors like corrosion resistance and strength under pressure.
ASME B16.34 FOR VALVES
ASME B16.34 categorizes materials into several groups to standardize the application of valve materials across different temperature and pressure conditions. These groups help in selecting the appropriate material for valves based on operational requirements, ensuring compatibility with the fluid being handled and the environmental conditions of the application.
The material groups include various grades of carbon steel, stainless steel, alloy steel, and non-ferrous metals, each chosen for their specific properties like strength, corrosion resistance, and temperature tolerance.
ASME B16.34 mentions pipes, plates, and steel bars because it includes material specifications and grades for the manufacture of valve parts. These materials must meet specific standards to ensure that valves can safely operate under the pressure and temperature conditions for which they are rated. Including these materials helps ensure compatibility and safety across various applications in piping systems.
ASME B16.34 GROUP 1 MATERIALS: CARBON AND ALLOY
| Material Group No. |
Material Nominal Designation | 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
| 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
| 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
| 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 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
| 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 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
| 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
| 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 |
ASME B16.34 GROUP 2 MATERIALS: 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
| 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. The flanged end rating stops at 1000°F.
GROUP 2.2
| 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.
| 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 | – | – | – |
MAX GAGE PRESSURE (In Psi) BY TEMPERATURE
Group 3.1
| 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 |
Group 3.2
| 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 |
Group 3.3
| 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. The flanged end rating stops at 1000°F.
Group 3.4
| 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 |
Group 3.5
| 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.
Group 3.10
| 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 |
We recommend purchasing the ASME B16.34 specification from the ASME website or from the IHS store to get a complete understanding of this topic.