AutoPIPE 2026 (26.0.0)

  • Defect 1958211: ASME NC, ND, NCD: Program may not limit the coefficient 0.75*i to the minimum value for use in equation 11 for user-defined stress intensification factors
    • The sustained stress term coefficient in equation 11 of ASME NC, ND, and NCD piping codes is defined as 0.75*i, but no less than 1.0, where i is the stress intensification factor. AutoPIPE may not consider this minimum coefficient limit for user-defined stress intensification factors, resulting in incorrect stresses for user factors less than 1.333.
  • Defect 1990173: ASME B31.1 & B31.3 Libraries: Modulus of Elasticity may be incorrect for some code and standard materials
    • In the ASME B31.1 and B31.3 material libraries, the reference standard materials for some code materials refer to the incorrect steel categories when determining the Modulus of Elasticity. Moreover, the standard material NI (Nickel Steel) in the ASME B31.1 and B31.3 material libraries incorrectly refers to Nickel Alloys when determining the Modulus of Elasticity.
  • Defect 2021342: Seismic Thermal Load: Units for user-defined Temperature and Expansion are always treated as English units resulting in incorrect unit conversion
    • The Generate Seismic Thermal Load Case dialog can be used to assign Temperature and Expansion properties to a soil identifier using a thermal load case. User-defined Temperature and Expansion values can also be assigned by unchecking the Auto checkboxes. In case of user-defined values, the input units for these two fields are incorrectly always treated as English units regardless of the input units displayed on the dialog. This can lead to the user-defined values being processed using the incorrect units.
  • Defect 2041354: EN 13480 Material Libraries: A333-3 and A333-6 refer to the incorrect material groups when determining the Modulus of Elasticity
    • The nominal composition for A333-3 provided by ASME BPVC II-D is 3 1/2Ni, which is part of Material Group B in Table TM-1, but A333-3 incorrectly refers to the group Carbon steels with carbon content less than or equal to 0.3% when determining the Modulus of Elasticity. The nominal composition for A333-6 provided by ASME BPVC II-D is Carbon Steel, which corresponds to Carbon steels with carbon content less than or equal to 0.3% in Table TM-1, but A333-6 incorrectly refers to Material Group B when determining the Modulus of Elasticity.
  • Defect 2046014: ASME B31.1 & B31.3 Material Libraries: Thermal Expansion Coefficient and Density values may be incorrect for some code and standard materials
    • Materials A333-3 and A333-9, found in the AUTO1967.src and B311-73.src libraries, and NI (Nickel Steel), found in the B313-24.src library, may reference incorrect material categories when determining Thermal Expansion Coefficient values. Additionally, NI (Nickel Steel) in all ASME B31.1 and ASME B31.3 material libraries incorrectly references Nickel Alloys when determining the Density values.
  • Defect 1987197: B31.8 Material Libraries: Material Composition is incorrect for A333-3 and A333-9, and Young's Modulus and Density values for NI are incorrect
    • In the ASME B31.8 material libraries, the reference standard material for A333-3 and A333-9 incorrectly refers to low-carbon steel material data instead of nickel-steel material data when determining the Modulus of Elasticity. Moreover, the standard material NI (nickel-steel) incorrectly refers to Nickel alloys (UNS No. Alloys N02200, N02201, N06625) when determining the Modulus of Elasticity and Density. As a result, incorrect Modulus of Elasticity and Density values may be used during analysis. This defect impacts all ASME B31.8 material libraries from AUTOB318 through B318-20.
  • Defect 1967667: ASME B31.3 and B31.1 Libraries: Reference standard material for some carbon steel specifications incorrectly refer to low carbon instead of high carbon for Modulus of Elasticity
    • This defect is limited to High severity as the difference between incorrect and correct Modulus of elasticity and its impact on program results is ~ 1%. In the ASME, B31.3 and B31.1 material libraries, the reference standard material for some carbon steel specifications incorrectly refers to low-carbon material data instead of high-carbon material data when determining the Modulus of Elasticity. As a result, incorrect modulus values may be used during analysis for affected materials.
  • Defect 1990784: ISO 14692 (2017): Code allowable for non-thermal load combinations maybe incorrectly reported for points containing a flange
    • This defect only affects models using piping code ISO 14692 2017 edition in AutoPIPE version 12.6.5 through version 2025. Code allowable maybe incorrectly reported for points having a flange with Lifetime (hrs) greater than 175200 hours. When evaluating the A0 factor to determine the allowable stress, AutoPIPE incorrectly uses the Bolt/Nut Weight of flanges instead of the cold gradient for points that contain a flange. This is only valid for Gravity load combinations that do not contain a Thermal nor Pressure load case. If the Bolt/Nut weight is less than the cold gradient value entered in the corresponding Pipe Property, the allowable result maybe unconservative. Typically, cold gradient is on the order of 1e-3.
  • Defect 1983997: ASME NC, ND, NCD: Program may not limit the product 0.75*i to the minimum value for use in equation 11 for cross-type junction stress intensification factors
    • Applicable program versions are AutoPIPE 9.2.2 through AutoPIPE 2025. Impacted piping codes are ASME NC, ND and NCD 1983 through 2023 with Service Level A-D Stress Summaries evaluating Equation 11. Crosses are the only impacted components by this bug. This bug is limited to High severity since crosses are not code components. ASME NC, ND and NCD Equation 11's sustained moment term is multiplied by (0.75*i), which can be no less than 1.0 as per code mandate. However, AutoPIPE incorrectly allows (0.75*i) multiplier less than 1.0 for crosses having User-defined SIF less than 1.333. User-defined SIF for crosses can be specified through Tee dialog by setting Tee component as Cross and Type of tee as Other. This lower limit ignorance for Equation 11 SIF multiplier by AutoPIPE may lead to incorrect Equation 11 stress evaluation for crosses.