Monel 400 Round Bar | Marine & Seawater Grade

The Monel 400 UNS N04400 Rods are alloy rods made up of solid solution, which possess exceptional resistance against seawater, alkalies, acids and stress corrosion cracking. This alloy consists of 63% nickel, 28-34% copper, and possesses high mechanical strength and high thermal conductivity. Monel 400 also offers a minimum tensile strength of 550MPa and yield strength of 240MPa, making it suitable for high pressure, high temperature applications. Made in a range of sizes, finishes and custom dimensions, these round bars are utilized in a range of marine, chemical processing and oil & gas industries. USA Piping Solution is a trusted manufacturer and supplier of Monel 400 (UNS N04400) Round Bar, providing high-quality products at competitive prices and delivery worldwide.

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Specifications of Monel 400 (UNS N04400) Round Bar

Specification	Details
International Specifications	QQ-N-281 , BS3076NA13, DIN 17753, VdTUV 263
Specifications	ASTM B164, AMS 4675, AMS 4730, AMS 4731
Grade	Monel 400 – UNS N04400, Nickel Alloy 400 (66 Ni/34 Cu)
Technique	400 Monel Cold Drawn, Hot Rolled, Forged Round Bar, Rod, Cold Rolled
Tolerance	H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Finish	Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black
Round bar size	Diameter: 3-~800mm
Hex Bar size	2-100mm A/F
Flat bar size	Thickness: 2 -100mm Width: 10 to 500mm
Square bar size	4 to 100mm
Section	3.0 to 12.0mm thickness
Form	Precision Ground Bar, Flat Bar, Square, Round, Half Round Bar, Rod, Rectangle, Hex (A/F), T-Bar, Channel Bar, Blocks, Round Rod, Threaded, Profiles, Billet, Ingot, I/H Bar, Forging, Rings, Hollow, Triangle etc.
Rectangles Size	33 x 30mm to 295 x 1066mm
Surface	Cold Drawn, Bright, Sand Blasting Finished, Hot Rolled Pickled, Hairline, Polished
Processing	Bar cutting to 650mm
Billet Size	1/2″ to 495mm Diameter
Channel Bar	80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness
Hollow Bar	32mm OD x 16mm ID to 250mm OD x 200mm ID
Angle bar size	3mm20mm20mm~12mm100mm100mm
Condition	Hardened & tempered, annealed

Chemical Compositions of Monel 400 (UNS N04400) Round Bar

Grade	Ni	Fe	C	Mn	Si	Cu	Al	S
Monel 400	63.0 min	1.0 – 2.5	0.3 max	2.0 max	0.5 max	28.0 – 34.0	0.50 max	0.02 max

Monel 400 (UNS N04400) Round bar Mechanical Properties

Density	Melting Point	Tensile Strength	Yield Strength (0.2% Offset)	Elongation
8.8 g/cm³	1350 °C (2460 °F)	Psi – 80000 , MPa – 550	Psi – 35000 , MPa – 240	40 %

Equivalent Grades of Monel 400 (UNS N04400) Round Bar

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

Size Chart of Monel 400 (UNS N04400) Round bar

Metric Bar Size (mm)	US Bar Size Designation	US Bar Diameter (Inches)	ASTM / Canadian Bar Size Designation	Canadian Nominal Area (mm2)	Japanese Bar Size Designation	Japanese Diameter (mm)
5	#2	0.250	10M	100	D6	6
5.5	#3	0.375	15M	200	D10	10
6	#4	0.500	20M	300	D13	13
7	#5	0.625	25M	500	D16	16
8	#6	0.750	30M	700	D19	19
9	#7	0.875	35M	1000	D22	22
10	#8	1.000	45M	1500	D25	25
11	#9	1.125	55M	2500	D29	29
12	#10	1.250	—	—	D32	32
14	#11	1.375	—	—	D35	35
16	#12	1.500	—	—	D38	38
18	#13	1.625	—	—	D41	41
20	#14	1.750	—	—	D44	44
22	#15	1.875	—	—	D48	48
25	#16	2.000	—	—	D51	51
28	#18	2.250	—	—	D57	57
32	—	—	—	—	—	—
36	—	—	—	—	—	—
40	—	—	—	—	—	—
44	—	—	—	—	—	—
50	—	—	—	—	—	—

Tolerance Chart of Monel 400 (UNS N04400) Round bar

Nominal Size Diameter (mm)	h5	h6	h7	h8	h9	H10	H11	h12
~ to 3	+0.004/0	+0.006/0	+0.01/0	+0.014/0	+0.025/0	+0.04/0	+0.06/0	+0.1/0
over 3 to 6	+0.005/0	+0.008/0	+0.012/0	+0.018/0	+0.03/0	+0.048/0	+0.075/0	+0.12/0
over 6 to 10	+0.006/0	+0.009/0	+0.015/0	+0.022/0	+0.036/0	+0.058/0	+0.09/0	+0.15/0
over 10 to 18	+0.008/0	+0.011/0	+0.018/0	+0.027/0	+0.043/0	+0.07/0	+0.11/0	+0.18/0
over 18 to 30	+0.009/0	+0.013/0	+0.021/0	+0.033/0	+0.052/0	+0.084/0	+0.13/0	+0.21/0
over 30 to 50	+0.011/0	+0.016/0	+0.025/0	+0.039/0	+0.062/0	+0.1/0	+0.16/0	+0.25/0
over 50 to 80	+0.013/0	+0.019/0	+0.03/0	+0.046/0	+0.074/0	+0.12/0	+0.19/0	+0.3/0
over 80 to 120	+0.015/0	+0.022/0	+0.035/0	+0.054/0	+0.087/0	+0.14/0	+0.22/0	+0.35/0
over 120 to 180	+0.018/0	+0.025/0	+0.04/0	+0.063/0	+0.1/0	+0.16/0	+0.25/0	+0.4/0
over 180 to 250	+0.02/0	+0.029/0	+0.046/0	+0.072/0	+0.115/0	+0.185/0	+0.29/0	+0.46/0

Types of Monel 400 (UNS N04400) Round Bar

0.5" Nickel Round Bar 400

0.25" Nickel Round Bar 400

0.375" Nickel Round Bar 400

0.625" Nickel Round Bar 400

Applications and Industrial Usage of Monel 400 (UNS N04400) Round Bar

Marine & Shipbuilding Industry
Oil & Gas Processing Industry
Chemical Processing Industry
Petrochemical Industry
Offshore Drilling & Subsea Equipment Industry
Power Generation Industry
Aerospace & Defense Industry
Desalination & Water Treatment Industry

Frequently Asked Questions

1. What is Monel 400 (UNS N04400) Round Bar used for?

Monel 400 Round Bar is used to manufacture shafts, valves, fasteners, pump components, heat exchangers, and marine hardware for marine, chemical, oil & gas, and offshore industries.

2. What is the difference between Monel 400 and Monel K500?

Monel K500 contains added aluminum and titanium, giving it higher strength and hardness than Monel 400. Monel 400 offers better ductility and is commonly used for general corrosion-resistant applications.

3. Is Monel 400 better than Stainless Steel 316?

For marine and chemical environments, yes. Monel 400 provides superior resistance to seawater, hydrofluoric acid, and stress corrosion cracking compared to Stainless Steel 316.

4. Can Monel 400 be used in marine applications?

Yes. Monel 400 has excellent resistance to seawater corrosion and marine biofouling, making it ideal for shipbuilding, offshore platforms, seawater piping, and marine equipment.

5. Is Monel 400 resistant to stress corrosion cracking?

Yes. Monel 400 offers excellent resistance to stress corrosion cracking, particularly in chloride-containing and seawater environments, ensuring reliable long-term performance.

Monel 400 (UNS N04400) Round Bar Manufacturer and Supplier