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A182 F51 forging Heat treatment
F51 duplex is heat-treated in accordance with NORSOK M630 (MDS D44). It was quenched in water.Transit time from furnace to quenching tank is within 60 seconds. Water is circulated and monitoring of water in place, well below +40 deg.C. Customer further request monitoring record of Halogen...- CTTEE
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- Replies: 4
- Forum: Metal and Metallurgy engineering
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ASTM A182 F51 forging Ratio and Which ASTM examination method to reveal material flow line
In general, standard minimum forging ratio is 3:1 for open-die forging method. Forger actual performed base on ratio 5.5:1 on F51 forging of valve component(closure). How does this forging ratio leads to the better material flow lines ? How & what checks are performed to see whether the...- CTTEE
- Thread
- Replies: 2
- Forum: ASTM (testing materials) Code Issues
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Dowel Pin Alternative Material
Hi, Valve component closure in A105, dowel pin material, can we use AISI 4140 type as altenative material to orginal A105 type. AISI 4140 low alloy steel high tensile-with yield strength almost double (485MPa) than A105. Any concern due to Dissimilarity of material-AISI4140 dowel pin/ A105...- CTTEE
- Thread
- Replies: 4
- Forum: Corrosion engineering
