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  1. SaeidNorouzi

    STANDARD for Pickling process

    dear all, I am looking for a specific standard regarding Pickling process after welding of stainless steels. regards, Saeed
  2. SaeidNorouzi

    GGG120

    Thank you Arunmrao, What is its chemical composition?
  3. SaeidNorouzi

    GGG120

    Dear All, I want to cast a crank shaft using "GGG120". I need information regarding casting and heat treatment of this alloy. Thank you in advance, Saeid
  4. SaeidNorouzi

    316 SST vs 316L SST; Corrosion Resistance

    the higher Carbon content in 316 can cause intergranular corrosion. because Carbon absorb Cr near grain boundaries. But in 316L due to having lower content of C the probability of formation of Chromium carbide decreases. For both alloys carrying out solution heat treatment increases corrosion...
  5. SaeidNorouzi

    SA-335 Grade P12 and P22

    hi all, what is the main practical difference between these two alloys: 1- SA-335 Grade P12 (USA / ASME) Cr(0.8-1.2) Mo(0.44-0.65) 2- SA-335 Grade P22 (USA / ASME) Cr(1.9-2.6) Mo(0.8-1.1) Is it possible to substitute the second item with first one? We are going to use them in boilers...
  6. SaeidNorouzi

    Forming Crack-free head

    Hello All, We are going to form a head for a presser vessel. Its diameter is about 3000mm. And it is made of A516Grade70 (Thk. is 32mm). Unfortunately, while forming we have cracks on the material (mostly on the smal diameter region) which cause rejection of the head. How can we form a...
  7. SaeidNorouzi

    Investment casting - Parts bends during casting process

    Distortion in an investment casting part has several causes. the most important of them are distortion in was pattern and distortion during solidification. Preventing and repairing of distortion of was pattern is easy. Using specific fixtures and pre-inserted wax parts and also using ceramic...

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