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Monel R-405

Designated as UNS N04405, Monel R-405 (also known as “Alloy R-405”), is a nickel-copper alloy and the free-machining version of Monel 400. The deliberately controlled greater amount of sulfur is added to provide sulfide inclusions that act as chip breakers during machining hence enhances the machinability of the alloy. Monel R-405 is used primarily for meter and valve parts, fasteners, as well as screw machine components.

Monel R-405 screw bolts.

Monel R-405 screw bolts.

1. Chemical Composition Requirements

The Chemical Composition of Monel R405, %
Nickel≥63.0
Carbon≤0.30
Manganese≤2.0
Iron≤2.5
Sulfur0.025-0.060
Silicon≤0.5
Copper28.0-34.0

2. Physical Properties of Monel R-405

DensityMelting RangePoisson's RatioCurie Temperature
g/cm3°C-°F°C
8.801300-13500.3270-12021-49

3. Mechanical Properties of Monel R-405

Tensile Strength, min.Yield Strength, min.Elongation, minHardness
MpaksiMpaksi%HB
550802403540110-140

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    Hebei Metals Industrial Limited
    (Shijiazhuang Metalsin Pipeline Tech Co., Ltd)
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    Tel: +86-311-89642206
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    Email: sales@metalspiping.com