Alloy 400 Stainless Steel Coil Tubing Price

Short Description:

Monel 400 is a nickel-copper alloy with about 67% Ni – 23% Cu that is resistant to sea water and steam at high temperatures as well as to caustic solutions. This nickel alloy is a solid solution alloy that can only be hardened by cold working. Alloy 400 exhibits characteristics like good corrosion resistance, good weldability and high strength. Its low corrosive property even in rapidly flowing brackish or seawater combined with excellent resistance to stress-corrosion cracking in most freshwaters, and resistance to a variety of corrosive conditions resulted into its wide use in marine applications and other non-oxidizing chloride solutions.

Above all, this nickel alloy is even resistant to hydrochloric and hydrofluoric acids when they are de-aerated. As would be expected from its high copper content, Monel 400 UNS N04400 Products are rapidly attacked by nitric acid and ammonia systems.

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Monel 400 Composition

Monel 400 WERKSTOFF NR. 2.4360 has great mechanical properties at subzero temperatures, can be used in temperatures up to 1000° F, and its melting point is 2370-2460° F. However, Monel 400 AMS 7233 products are low in strength in the annealed condition so, a variety of tempers may be used to increase the strength. SIHE STAINLESS STEEL is a global leader in manufacturing, stocking, and supplying variety of Monel alloy 400 products from its inventory. Starting from off shelf on-time delivery to all ranges of industrial products of steel and with its array of grades we provide solutions for rapidly growing markets.

MONEL® ALLOY 400 UNS N04400 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 of MONEL® ALLOY 400

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

MONEL 400 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 *

*The ranges shown are composites for various product sizes and therefore are not suitable for specification purposes. Hardness values are suitable for specification purposes provided tensile properties are not also specified..

Alloy 400 Trivia
*Alloy 400 is slightly magnetic at room temperature.
Other common names: Alloy 400

Monel 400 Melting Point
Melting Point : 2370-2460° F.

Monel 400 Equivalent

STANDARD	UNS	WERKSTOFF NR.	AFNOR	EN	JIS	BS	GOST
Monel 400	N04400	2.4360	NU-30M	NiCu30Fe	NW 4400	NA 13	МНЖМц 28-2,5-1,5

This nickel-copper chemistry features a high intensity single-phase solid solution metallurgical structure. Alloy 400 has greater corrosion resistance than nickel under reducing conditions and is more resistant than copper under oxidizing conditions. Due to its performance, this grade has been widely used in applications requiring strong resistance to corrosive environments featuring acids, alkalies, and high temperature steam. It is all but immune to the stress corrosion cracking (SCC) induced by chlorides and most freshwater conditions.

Considered a very tough material as measured by impact testing, alloy 400 tubing has excellent mechanical properties in sub-zero conditions. Even when the alloy is cooled to the temperature of liquid hydrogen, it does not undergo a ductile-to-brittle transformation. On the warmer side of the temperature range, alloy 400 performs well in temperatures up to 1000° F.

Product Specifications

ASTM B163, B165 / ASME SB163 / NACE MR0175

Size Range

Outside Diameter (OD)	Wall Thickness
.125”–1.000”	.035″–.065″

Cold finished and bright annealed tube.

Chemical Requirements
Alloy 400 (UNS N04400)
Composition %

Ni Nickel	Cu Copper	Fe Iron	Mn Manganese	C Carbon	Si Silicon	S Sulfur
63.0 min	28.0–34.0	2.5 max	2.0 max	0.3 max	0.5 max	0.024 max

Dimensional Tolerances

OD	OD Tolerance	Wall Tolerance
.094"–.1875" excl	+.003”/-.000”	± 10%
.1875"–.500" excl	+.004”/-.000”	± 10%
.500”–1.250” incl	+.005”/-.000”	± 10%