Allowable stresses for temperatures of 400°C and above are values obtained from time � dependent properties.
for information and guidance only. omissions in II. Section specified in the material specification, but not lower than 1040°C, and quenching in water or rapidly cooling by other means. No allowable stress values are listed for H1150M!
efficiency factor of 1.00.
II, The stress values of the exemplary materials shown here are intended to be used
liability for Upon prolonged exposure to temperatures above 425°C, the carbide phase of carbon steel may be converted to graphite. The values at intermediate temperatures shall be rounded to the same number of decimal places as the value at the higher temperatur between which values are being interpolated.The rounding rule is: when the next digit beyond the last place to be retained is less than 5, retain unchanged the digit in the last place retained; when the digit next beyond the last place to be retained is 5 or greater, increase by 1 the digit in the last place retained. Section high alloy steel
information Temp. ultrasonic examination, radiographic examination, or eddy current examination, in accordance with NC � 2550, shall provide a longitudinal Materials welded with filler metal meeting the requirements of NC � 2560 shall receive a longitudinal weld Table 1B, Stress
Stress Values- Section II, Table 1A; Stress Values- Section II, Table 1B; Stress Values- Section II, Table 3; Carbon Steel - Example; High Alloy Steel - Example; Shells and Heads YIELD STRESS, ksi. Material.
800. II, Divide tabulated values by Allowable stresses for temperatures of 620°C and above are values obtained from time � dependent properties. Table 1B, Stress K02700 20.0 20.0 20.0 20.0 20.0 19.4 18.1 12.0 38.0 34.8 33.6 32.5 31.0 29.1 27.2.
and Max. II, weld efficiency factor of 1.00. ASME Pressure Vessel Code Maximum Allowable Stress Values: The maximum allowable stress values to be used in the calculation of the vessel’s wall thickness are given in the ASME Code for many different materials. More specifically, long term creep tests on AISI Type 304H and 316H stainless steel (SS), completed after the current allowable stress values were established, identified some heats whose rupture life fell below currently published allowable values, particularly above 1200ºF (650ºC).
SA 516-70 Carbon Steel. NB: Please use Section II Part D for all permitted ASME materials. or
NB: Please use Section II Part D for all permitted ASME materials.
Temp. Other longitudinal weld efficiency factors shall be in accordance with the following:(a) for single butt weld, with filler metal, 0.80(b) for single or double butt weld, without filler metal, 0.85(c) for double butt weld, with filler metal, 0.90 (d) for single or double butt weld, with radiography, 1.00. I am currently designing a line blank component using SA-564 Type 630 (a 17-4 PH stainless steel) in the H1150M age hardened condition. At temperatures above 550°C, these stress values apply only when the carbon is 0.04% or higher on heat analysis. For welds made with filler metal, consult UW � 12 for Section VIII, Division 1, Classes ASME Code - Allowable Stresses. Allowable stresses for temperatures of 565°C and above are values obtained from time � dependent properties. with all Allowable stresses for temperatures of 595°C and above are values obtained from time � dependent properties. However, ASME Section II, Part D, Table 1A only lists maximum allowable stress values (S) for SA-564 Type 630 in the H1150 age hardened condition. errors and These 22) is limited to the use of structural members cold-formed from stainless steel sheet, strip, plate or flat bar, annealed and cold-rolled in 1/16-, 1/4-, and 1/2-hard tempers.
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