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  1. bagnamento

    Invar 36 alloy (FeNi36) tensile properties

    Hello all! I've just done an unsuccessful literature search for Invar36 alloy tensile props, in particular: Young's modulus Poisson's ratio at RT and -165 to -196°C I need them for fracture toughness calculations. I've currently got YS and UTS data but no stress-strain curves. Can anybody help...
  2. bagnamento

    Definition of 'flaw' and 'defect'

    Hi all! I would like to track down a definitive reference which states the difference between a flaw and a defect in the English language. I believe this originated in AWS somewhere. Can anybody help? Thanks
  3. bagnamento

    DPI crack-like indications

    Hi everybody, I got a lab report about some cracks found on AISI 304 flanges after welding. One of the paragraph concerns 'DPI crack-like indications', does anyboduy know what DPI means? Thanks
  4. bagnamento

    21/4Cr-1Mo weld build-up: multiwire GMAW feasible?

    Hi everybody, we're considering the possibility to weld internal build-up on 21/4Cr-1Mo plates using multiwire GMAW technique. AWS website (http://www.aws.org/wj/2003/06/040/) concentrates on improvements due to high productivity and low heat input. Other references just concentrate on...
  5. bagnamento

    Delta-ferrite content in SS Type 347 weld overlay

    I've found the answer in thread725-139524. In case anybody had some additional info, please reply. Thanks
  6. bagnamento

    Delta-ferrite content in SS Type 347 weld overlay

    Hi everybody, we are about to start with the fabrication of a 21/4Cr-1Mo pressure vessel for the petrochemical industry. Customer's technical specification gives acceptance criteria for delta-ferrite content in stainless steel overlay: the limits in PWHT condition are 3-10% for type 308 or 316...
  7. bagnamento

    Welding without filler metal, A_N.¦?

    Hi everybody, a colleague of mine asked me if, when A_N.° is an essential variable for welding procedure qualification and no filler metal is used, the molten base metal should be considered as weld metal and its chemical composition be determined in order to determine A_N.° I believe that...
  8. bagnamento

    Stainless and carbon steel in concrete

    EdStainless, no, the joint will never see water.
  9. bagnamento

    Stainless and carbon steel in concrete

    I'm reviewing a project which includes fillet welding of two plates made of carbon steel and stainless steel (Type 304). The joint will not be loaded (it's a seal joint). It will be exposed to air first and then completely immersed in concrete. Is this environment harmful to a c-steel/stainless...
  10. bagnamento

    Cladding of Al-alloys with Ni-based alloys

    Hi everybody; has anyone experienced cladding of Al-alloys sheets with Ni-based alloys (Inconel)? In case it was possible, which cladding method would be better? I guess it should be done by roll cladding.
  11. bagnamento

    Cladding of Al alloys

    Hi everybody; I got this from a friend: has anyone experienced cladding of Al-alloys sheets with Ni-based alloys (Inconel)? In case it was possible, which cladding method would be better? I guess it should be done by roll cladding.
  12. bagnamento

    High temp data for SA 387 Gr.22 Cl.2

    Hi everybody, I need tensile properties (yield point 0.2% and ultimate tensile strength) data for ASME SA 387 Gr.22 Cl.2 (21/4Cr, 1Mo) steel. In particular I need experimental data (not ASME II-D design data) for temperatures within 840-1110°F (450-600°C). Thanks
  13. bagnamento

    Bending Cr-Mo-V steel plate

    I am dealing with bending of a plate made of SA542D Cl.4 (21/4Cr-Mo-V), tempered at 1250°F (680°C), to make a cilyndrical shell. The late is 51/2in. (138mm) thick and we cannot roll at a low temperatures such as 360-400°F (180-200°C) since the needed loads would be too high for our machinery...
  14. bagnamento

    AlSi5Cu3Mg hardness

    Hi everybody, I need to know the typical hardness values of 'as cast'Al alloy: AlSi5Cu3Mg (5% Si, 3% Cu, 0.30% Mg), or a good reference to find them on the net. Any suggestion?
  15. bagnamento

    Properties of SA 350 LF5 material

    Thanks Metengr! I got the same answer from a colleague of mine (I'm not familiar with ASME II-D)
  16. bagnamento

    Properties of SA 350 LF5 material

    Hi, anybody knows a good reference to find physical and mechanical properties of low-alloy steel ASME SA 350 LF5 (1-2% Ni). I guess they won't differ too much from those of any C-Mn steel. Thanks
  17. bagnamento

    20CrMnTi Vs 20CrMn

    Hi, I was asked this question by a friend who works with gears. They use to make gears with 20CrMn steel (carburized+quenched) and their usual suppliers are offering 20CrMnTi steel as an alternative. What is the role of Ti in this alloy? How do material properties change? Would there be any...
  18. bagnamento

    What is 316LNG

    Hello, I am reviewing some technical specifications which call out for 316LNG material. As far as I know, NG stands for 'Nuclear Grade'. I couldn't find this acronym in ASME sections II material specifications. A colleague of mine told me that, if special requirements for 316LNG exist, these...
  19. bagnamento

    What is stainless steel 316L NG

    I'm reviewing some design documents which include plates made of 316L NG stainless steel. I was able to find out that 'NG' stays for Nuclear Grade but couldn't find more complete info. Does this 'NG' influence the material's chemical composition, mechanical properties or others? What's the...
  20. bagnamento

    ASME II-A SA 508 1971 Ed.

    I'm reviewing some documents with a reference to the chemical composition and mechanical properties of SA 508 Class 2 and 3 according to ASME II-A 1971 Ed. I can't find this edition of ASME II at my company, can anybody please give me the needed info? (I just need chemical composition and...

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