Full Transcript Here:
Hey what’s up guys?!?! This is Michael with Michael Talks Metal back for another session on some Nickel but we’re pivoting off Inconel and steering towards the Monel. Not to be confused w/the son of Jor-el! (Kneel before zod)
Today’s topic is Monel alloy 400 when produced by Special Metals Corporation or simply alloy 400 in a generic form by other producing mills. UNS designation for the chemical composition is N04400
A solid solution of nickel and copper, it cannot be strengthened by heat treatment.
Cold work can increase strength as in other commercial alloys. Typical of all the Monel alloys,it has an excellent combination of strength, toughness, and ease of fabrication.
Excellent salt water corrosion performance leads to many marine applications such as valves, pumps, propellers, shafts, fixtures, fasteners, and fittings.
Monel is found in NACE applications in petroleum production and refining. Other chemical processing equipment applications take advantage of its corrosion performance and thermal properties. It is recognized in many ASME standards for applications within the Boiler and Pressure Vessel Code for condensers, heat exchangers, piping, and pressure vessels.
Chemical Composition UNS N04400
Nickel (plus Cobalt) ……………………………………………. 63 % Minimum
Copper ……………………………………………………………… 28. 0 – 34.0 %
Carbon ……………………………………………………………… 0.3 % Maximum
Manganese ……………………………………………………….. 2.0 % Maximum
Iron …………………………………………………………………… 2.5% Maximum
Sulfur ………………………………………………………………… 0.024% Maximum
Silicon ……………………………………………………………….. 0.5% Maximum
Density ……. .318 pounds per cubic inch
Typical room temperature mechanical properties in the annealed condition:
Tensile strength ……….. 75,000 – 95,000 psi
Yield strength ………….. 25,000 – 50,000 psi
Elongation ………………. 60 – 35 %
Curie temperature ………….. 70 – 120 deg F ( dependent on actual chemistry) making alloy 400 not reliably non-magnetic in near room temperature environments
Specifications
Bar and Forgings:
AMS 4675, QQ-N-281
ASTM B 164, ASTM B 564
ASME SB 164, ASME SB 564
Plate and Sheet:
AMS 4544, QQ-N-281
ASTM B 127
ASME SB 127
Pipe and Tube:
AMS 4574
ASTM B163, ASTM B 165, ASTM B 725, ASTM B 730, ASTM B 751, ASTM B 775, ASTM B 829
ASME SB163, ASME SB165, ASME SB725, ASME SB730, ASME SB 751, ASME SB 775, ASME SB 829
Each specification has requirements that can add to or restrict the chemical composition or properties beyond what we have shown you today. Additional processing and testing requirements exist in the individual specifications.
So we always say CHECK ….THE……. SPECS!!!!
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