» Technical » p/T Ratings for P250GH Flanges (EN 1092-1)

p/T Ratings for P250GH Flanges (EN 1092-1)

March 22, 2021

EN 1092-1 flanges, either made from EN 10273 P250GH hot rolled bars or EN 10222-2 P250GH forgings, are classified into material group 3E0. The pressure-temperature ratings (p/T ratings) for P250GH indicate the maximum allowable pressure (M.A.S in bar unit) at maximum allowable temperature (Temp. in °C unit) for various PN designations of P250GH flanges. The p/T ratings are dependent on the actual flange thickness (vR in mm unit).

Temp.
°C
M.A.S for
vR≤50
bar
M.A.S, for
50<vR≤150
bar
RT2.52.5
1002.32.1
1502.22.0
2002.01.9
2501.91.7
3001.71.6
3501.61.5
4001.41.4
4500.80.8
*The p/T ratings for PN 2.5 P250GH flanges.

Temp.
°C
M.A.S for
vR≤50
bar
M.A.S, for
50<vR≤150
bar
RT6.06.0
1005.55.1
1505.25.0
2005.04.6
2504.54.2
3004.13.8
3503.83.6
4003.53.4
4501.91.9
*The p/T ratings for PN 6 P250GH flanges.

Temp.
°C
M.A.S for
vR≤50
bar
M.A.S, for
50<vR≤150
bar
RT10.010.0
1009.28.5
1508.88.3
2008.37.7
2507.67.0
3006.96.4
3506.46.0
4005.95.7
4503.23.2
*The p/T ratings for PN 10 P250GH flanges.

Temp.
°C
M.A.S for
vR≤50
bar
M.A.S, for
50<vR≤150
bar
RT16.016.0
10014.813.7
15014.013.3
20013.312.4
25012.111.3
30011.010.2
35010.29.6
4009.59.1
4505.25.2
*The p/T ratings for PN 16 P250GH flanges.

Temp.
°C
M.A.S for
vR≤50
bar
M.A.S, for
50<vR≤150
bar
RT25.025.0
10023.221.4
15022.020.8
20020.819.4
25019.017.7
30017.216.0
35016.015.1
40014.814.2
4508.28.2
*The p/T ratings for PN 25 P250GH flanges.

Temp.
°C
M.A.S for
vR≤50
bar
M.A.S, for
50<vR≤150
bar
RT40.040.0
10037.134.2
15035.233.3
20033.331.0
25030.428.3
30027.625.7
35025.724.1
40023.822.8
45013.113.1
*The p/T ratings for PN 40 P250GH flanges.

Temp.
°C
M.A.S for
vR≤50
bar
M.A.S, for
50<vR≤150
bar
RT63.063.0
10058.554.0
15055.552.5
20052.548.9
25048.044.7
30043.540.5
35040.538.1
40037.536.0
45020.720.7
*The p/T ratings for PN 63 P250GH flanges.

Temp.
°C
M.A.S for
vR≤50
bar
M.A.S, for
50<vR≤150
bar
RT100.0100.0
10092.885.7
15088.083.3
20083.377.6
25076.170.9
30069.064.2
35064.260.4
40059.557.1
45032.832.8
*The p/T ratings for PN 100 P250GH flanges.

Temp.
°C
M.A.S for
vR≤50
bar
M.A.S, for
50<vR≤150
bar
RT160.0160.0
100148.5137.1
150140.9133.3
200133.3124.1
250121.9113.5
300110.4102.8
350102.896.7
40095.291.4
45052.552.5
*The p/T ratings for PN 160 P250GH flanges.

Temp.
°C
M.A.S for
vR≤50
bar
M.A.S, for
50<vR≤150
bar
RT250.0250.0
100232.1214.2
150220.2208.3
200208.3194.0
250190.4177.3
300172.6160.7
350160.7151.1
400148.8142.8
45082.182.1
*The p/T ratings for PN 250 P250GH flanges.

Temp.
°C
M.A.S for
vR≤50
bar
M.A.S, for
50<vR≤150
bar
RT320.0320.0
100297.1274.2
150281.9266.6
200266.6248.3
250243.8227.0
300220.9205.7
350205.7193.5
400190.4182.8
450105.1105.1
*The p/T ratings for PN 320 P250GH flanges.

Temp.
°C
M.A.S for
vR≤50
bar
M.A.S, for
50<vR≤150
bar
RT400.0400.0
100371.4342.8
150352.3333.3
200333.3310.4
250304.7283.8
300276.1257.1
350257.1241.9
400238.0228.5
450131.4131.4
*The p/T ratings for PN 400 P250GH flanges.

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