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Allowable Stresses for Wrought Tubesheet and Tube Support Materials



Material
Temperature (1)
Dead Load Stress
psi(3)

Dead Load Stress Plus
Frictional Stress, psi(3)
°F
°C
Carbon Steel (A285 Gr C)8004271240024800
Carbon Steel (Alloy A242 Type 1/COR-TEN A)8004272350047000
Carbon Steel (Alloy A242 Type 2/COR-TEN B)8004271875037500
18 Cr - 8 Ni (A240, A167 Type 304H) (4)10005381267012670
11005931167011670
1200649765011330
130070447259450
140076029505900
150081618053610
Ni - Fe - Cr (B-409 Alloy 800HT)1200649875017500
1300704550011000
1400760700014000
150081626005200
160087117503500
17009279501900
18009826001200
21 Cr - 11 Ni - 1.5 Si
(A240 RA 253 - MA)
1100593925018500
1200649522510450
130070434158830
140076022304460
150081614552910
16008719501900
17009276201240
1800982405810
19001038265530
20001093175

350

Notes:

  1. For intermediate temperatures, allowable stress may be obtained from a smooth curve through the data points
  2. A casting factor is not applicable
  3. 1 psi = 6.9 kPa
  4. Data are partially based on ultimate tensile or yield strength
  5. Unless otherwise noted, data are based on creep or rupture criteria in API STD 560



Tags: fired-heater Wrought