Monel 400

This nickel-copper alloy has high strength and excellent corrosion resistance, particularly in sea water, hydrofluoric acid, sulfuric acid, and strong bases. Common applications for 400 are chemical and hydrocarbon processing equipment, marine engineering, and heat exchangers.

Monel 400 Chemical composition

Alloy	%	Ni	Cu	Fe	C	Mn	Si	S
Monel400	Min.	63	28
	Max.		34	2.5	0.3	2	0.5	0.024

Monel 400 Physical properties

Density	8.83 g/cm³
Melting point	1300-1390 ℃

Monel 400 Alloy minimum mechanical properties in the room temperature

Alloy state	Tensile strength Rm N/mm²	Yield strength R P0. 2 N/mm²	Elongation A 5 %
Monel400	480	170	35

Characteristic as below:

Monel 400 is an extremely combination property that use for largest amount and most widely corrosion resistance alloy. This alloy in the hydrofluoric acid and fluoride gas medium with excellent corrosion resistance, as well as to the hot concentrated alkali. At the same time, is also corrosion resistant to neutral solution, sea water, air, organic compounds. An important feature of this is generally do not generate a stress corrosion cracking, good cutting performance.

Monel 400 Metallurgical structure

Monel 400 alloy is high-intensity single-phase solid solution.

Monel 400 Corrosion resistance

Monel 400 alloy in the fluoride gas, hydrochloric acid, sulfuric acid, hydrofluoric acid and their derivatives have a very good corrosion resistance property, and possess better corrosion resistance more than the copper alloy in the sea water. Acid medium: Monel 400 have corrosion resistance in less than 85% consistency of sulfuric acid. Monel 400 is an important material that resistant to hydrofluoric acid. Water corrosion: Monel 400 alloy in most corrosion cases of water, not only excellent corrosion resistance, but also less pitting, stress corrosion, the corrosion rate less than 0.025mm / a. High temperature corrosion: Monel 400 for the work of the highest temperature at about 600 ℃ in general in the air, in the high temperature steam, the corrosion rate less than 0.026mm / a. Ammonia: Monel 400 can be resistant to an hydrous ammonia and aminate conditions corrosion below 585 ℃ due to the high nickel.

Monel 400 Application field：

Monel 400 alloy is a multi-purpose material in many industrial applications:

1. Seamless water pipe in the power factory
2. Sea-water exchanger and evaporator
3. Sulfuric acid and hydrochloric acid environment
4. Crude distillation
5. Sea-water in the use of equipment and propeller shaft
6. Nuclear industry and used in the manufacture of uranium enrichment isotope separation equipment
7. Manufacturing hydrochloric acid equipment used in the production of pump and valve

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MONEL ®alloys MONEL®Monel 400 MONEL®alloy K-500 Inconel®alloys Inconel 600 Inconel 601 Inconel 625 Inconel 718 Inconel X-750

INCOLOY®alloys Incoloy 800H Incoloy 800HT Incoloy 825 Incoloy 901 Incoloy 926 Inconel 600 Inconel 601

Hastelloy®alloys Hastelloy B Hastelloy B-2 Hastelloy C-4 Hastelloy C-22 Hastelloy C-276 Hastelloy N10675

Other alloys A-286 254SMO Nimonic 80A Invar alloy 904L Duplex S31803

Available forms are seamless pipe, welded pipe, seamless tube, welded tube, bar, wire, sheet, plate, forgings, pipe fittings and flanges..

Products	Standard
Sheet/Plate content	ASTM B443, AMS 5599, AMS 5869, ISO 6208, VdTüV 499, BS 3072NA21, EN 10095, DIN 17750
Round Bar/Wire content	ASTM B446, AMS 5666, AMS 5837, ISO 9723, ISO 9724, ISO 9725, VdTüV 499, BS3076NA21, EN 10095, DIN 17752, DIN 17753, DIN 17754
Pipe & Tube content	ASTM B444, ASTM B751, ASTM B829, ASTM B775, ASTM B705, ASTM B704, AMS 5581, ISO 6207, VdTüV 499, BS 3074NA21, DIN 17751
Fittings content	ASTM B366
Forgings content	ASTM B564, AMS 5666
Weld Wire content	AWS A5.14 ERNiCrMo-3, AWS A5.11 ENiCrMo-3, DIN 1736 SG NiCr20Mo9Nb