Monel 400 Alloy Introduction

Monel alloy

Monel alloy, also known as nickel alloy, is an alloy based on nickel metal with copper, iron, manganese and other elements. Monel alloy has good corrosion resistance and silver-white color. It is suitable for edge filament material.

Usage
The structure of Monel 400 alloy is a high-strength single-phase solid solution, single-phase austenite structure , which is the corrosion-resistant alloy with the largest amount, the most versatile and excellent comprehensive performance. The alloy has excellent corrosion resistance in hydrofluoric acid and fluorine gas media, and excellent corrosion resistance to hot concentrated alkali liquor. It is also resistant to corrosion by neutral solutions, water, sea water, atmosphere, organic compounds, etc. An important feature of this alloy is that stress corrosion cracking is generally not produced and the cutting performance is good. The alloy is mainly used for valve stems, pump shafts and impellers, conveyor scrapers, oil well drill rings, elastic parts, valve pads and the like.

Corrosion Resistance
The alloy has excellent corrosion resistance in fluorine gas, hydrochloric acid, sulfuric acid, hydrofluoric acid and their derivatives.

Acid medium: M400 is corrosion resistant in sulfuric acid with a concentration of less than 85%. M400 is one of the few important materials that can withstand hydrofluoric acid.

Water corrosion: M400 alloy is not only excellent in corrosion resistance, but also pitting corrosion, stress corrosion, etc., corrosion rate is less than 0.025mm / a

High temperature corrosion: the highest temperature of M400 continuous operation in air Generally, at about 600 ° C, in high temperature steam, the corrosion rate is less than 0.026 mm / a.

Ammonia: Due to the high nickel content of Monel 400 alloy, it can withstand corrosion under anhydrous ammonia and ammoniation conditions below 585 °C.