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Recent content by 581127

  1. 581127

    4130/4140 mechanical proporties

    i have just found a webpage(http://www.qualityforgings.co.uk/spec_4130-80.htm) in which there are some proporties data such as "HEAT TREATED AND TESTED TO: Tensile - 100,000 PSI (690 N/mm2),Yield - 80,000 PSI (552 Nmm2),Elongation in 2"L - 18%, Reduction of Area - 35%",if i can consider these...
  2. 581127

    4130/4140 mechanical proporties

    thanks for the help. as metengr said it's different to find the mechanical properties of the impeller material (for the compressor not for the pump),but i want to know the Minimum Tensile Properties that AISI4130/4140 standard specification specified, how can i find it ?
  3. 581127

    4130/4140 mechanical proporties

    i am trying to do a failure analysis for the impeller made of AISI4130/4140(forging), but i don't know the proporties in the standard specification ,anyone can help me? thanks.
  4. 581127

    severely deformed effect for fatigue

    I need some advice. What is the effect on the fatigue of 304SS severely deformed?
  5. 581127

    I have a question about the low car

    thank you Metalguy I have some difficulies to express in english,let me try it again the vessel with peddler:maybe I should say agitated vessel.dia.of the vessel is 2000mm.rotate speed of agitator is 50rpm. pudding is wrong, here shoud be agitating. I mean if the corrosion is related with...
  6. 581127

    I have a question about the low car

    I have a question about the low carbon steel vessel, 16mm wall thickness in which there is a peddler. The vessel was heated by burning oil. The medium is caustic soda with some sodium sulfite, temperature is 330-350¡æ, normal pressure. The vessel was badly corroded locally using for about 30...
  7. 581127

    aluminium melting point?

    can anyone help me to find the data of aluminium melting point such as 6063? thank you chenjin
  8. 581127

    corrosion test

    I plan to do some intergranular corrosion test for 316L stainless steel plate rewelded for 5 times in the same position. As we know, rewelding may cause carbide and sigma phase precipitating and resulting in corrosion resistance decrease. According to ASTM A262, method E may be used to access...
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