Stud Creep
09-09-2014, 12:21 AM
#21
I've shortened inconel studs before. it was surprisingly easy, but that was before any heat cycles, so I don't know ( I hear the stuff gets harder with heat)
I think there's a misunderstanding or confusing here, but too tired to properly correct it.
bottom line - there are tons of mild manifolds, and in fact what tim and abe put together is more often mild vs stainless. in fact, I've heard many fabricators mention mild being much better than stainless in these applications.
From what I've seen, they mostly fab in stainless. ?? I don't think I've ever seen a mild steel turbo manifold. Maybe we need pics of op's manifold.
Mild steel that is subject to fastening forces (ie, threads) will let go at elevated temps. It's a physical property. It's why we use inconel studs. The turbo mounting flange threads see basically the same temps and forces.
Mild steel that is subject to fastening forces (ie, threads) will let go at elevated temps. It's a physical property. It's why we use inconel studs. The turbo mounting flange threads see basically the same temps and forces.
bottom line - there are tons of mild manifolds, and in fact what tim and abe put together is more often mild vs stainless. in fact, I've heard many fabricators mention mild being much better than stainless in these applications.
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09-09-2014, 08:38 AM
#22
I've shortened inconel studs before. it was surprisingly easy, but that was before any heat cycles, so I don't know ( I hear the stuff gets harder with heat)
I think there's a misunderstanding or confusing here, but too tired to properly correct it.
bottom line - there are tons of mild manifolds, and in fact what tim and abe put together is more often mild vs stainless. in fact, I've heard many fabricators mention mild being much better than stainless in these applications.
I think there's a misunderstanding or confusing here, but too tired to properly correct it.
bottom line - there are tons of mild manifolds, and in fact what tim and abe put together is more often mild vs stainless. in fact, I've heard many fabricators mention mild being much better than stainless in these applications.
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09-09-2014, 03:15 PM
#27
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Understood. Would you be willing to say good weldability or not? Or have you already kinda said that?
Inconel 600: Solid solution strengthened
Inconel 625: Acid resistant, good weldability. The LCF version is typically used in bellows.
Inconel 690: Low cobalt content for nuclear applications, and low resistivity
Inconel 713: Newly developed alloy
Inconel 718: Gamma double prime strengthened with good weldability
Inconel 751: Increased aluminium content for improved rupture strength in the 1600 °F range
Inconel 792: Increased aluminium content for improved high temperature corrosion properties, used especially in gas turbines
Inconel 939: Gamma prime strengthened with good weldability
Inconel 600: Solid solution strengthened
Inconel 625: Acid resistant, good weldability. The LCF version is typically used in bellows.
Inconel 690: Low cobalt content for nuclear applications, and low resistivity
Inconel 713: Newly developed alloy
Inconel 718: Gamma double prime strengthened with good weldability
Inconel 751: Increased aluminium content for improved rupture strength in the 1600 °F range
Inconel 792: Increased aluminium content for improved high temperature corrosion properties, used especially in gas turbines
Inconel 939: Gamma prime strengthened with good weldability
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