Monel 400

ISHWAR STEEL CORPORATION maintains one of the world’s largest ASTM B163 Monel 400 Seamless Pipe -pipe & tubes inventories include stainless steels, duplex, super duplex, nickel & mixed alloys, carbon steels and low alloys for energy and industrial applications.

Pipes are normally manufactured in either seamless or welded form. Seamless pipes are made from extruded billets and are then formed into nominal bore sizes with the various schedule wall thicknesses to suit. Welded pipes are manufactured from strip or plates. These are rolled into shape and then welded into cylindrical form of nominal bore sizes with their various schedule wall thicknesses to suit.

• Sheet
• Plate
• Bar
• Pipe & Tube (welded & seamless)
• Flanges
• Wire

What are the characteristics of Monel 400?

• Resistant to seawater and steam at high temperatures


• Excellent resistance to rapidly flowing brackish water or seawater


• Excellent resistance to stress corrosion cracking in most freshwaters


• Particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated


• Offers some resistance to hydrochloric and sulfuric acids at modest temperatures and concentrations, but is seldom the material of choice for these acids


• Excellent resistance to neutral and alkaline salt


• Resistance to chloride induced stress corrosion cracking


• Good mechanical properties from sub-zero temperatures up to 1020° F


• High resistance to alkalis

Chemical Composition, %

C	Mn	S	Si	Ni	Cu	Fe
.30 max	2.00 max	.024 max	.50 max	63.0 min	28.0-34.0	2.50 max

ASTM Specifications

Pipe Smls	Pipe Welded	Tube Smls	Tube Welded	Sheet/Plate	Bar	Forging	Fitting	Wire
B165	B725	B163		B127	B164	B564	B366

Mechanical Properties

Typical room temperature Tensile Properties of Annealed Material

Product Form	Condition	Tensile (ksi)	.2% Yield (ksi)	Elongation (%)	Hardness (HRB)
Rod & Bar	Annealed	75-90	25-50	60-35	60-80
Rod & Bar	Cold-Drawn Stress Relieved	84-120	55-100	40-22	85-20 HRC
Plate	Annealed	70-85	28-50	50-35	60-76
Sheet	Annealed	70-85	30-45	45-35	65-80
Tube & Pipe Seamless	Annealed	70-85	25-45	50-35	75 max *