Name: ASTM B564 UNS N04400 Weld Neck Flange Monel 400 Flange Nickel Copper Alloy WNRTJ Flange
Brand: Yuhong Group Co.,Ltd
SKU: ASTM B564 UNS N04400 Monel 400 WNRTJ Flange
Price: 150000 USD
Availability: InStock

Yuhong Holding Group Co.,LTD

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ASTM B564 UNS N04400 Weld Neck Flange Monel 400 Flange Nickel Copper Alloy WNRTJ Flange

Product Details:

Place of Origin:	CHINA
Brand Name:	YUHONG
Certification:	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number:	ASTM B564 UNS N04400 Monel 400 WNRTJ Flange

Payment & Shipping Terms:

Minimum Order Quantity:	1PC
Packaging Details:	PLYWOOD CASE / PALLET
Delivery Time:	7 DAYS
Payment Terms:	L/C,T/T

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Detailed Product Description

Product Name:	Nickel Alloy Flange	Dimension:	ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges Etc.
Standard:	ASTM B564, ASME SB564	Material:	UNS N04400 , Monel 400
Size:	1/2" To 48"	Pressure:	Class150/300/600/9001500/2500
Type:	(WN) Weld Neck Flange	Flange Face:	Ring Type Joint (RTJ)
Application:	Oil And Gas Industry, Chemical Processing, Marine Engineering,etc
High Light:	ASTM B564 UNS N04400 Weld Neck Flange, ASME B16.5 Monel 400 WNRTJ Flange

ASTM B 564 UNS N04400 / Monel 400 WNRTJ Flange Nickel-Cooper Alloy Weld Neck Flange

This is a high-integrity, forged pipe connector manufactured from Nickel-Copper Alloy UNS N04400 (Monel 400) under ASTM B564 forging specifications. It features a long tapered hub (Weld Neck) designed for butt-welding to the pipe, combined with a Ring Type Joint (RTJ) grooved face—engineered to accept a solid metallic gasket for a critical, metal-to-metal seal in extreme-pressure and highly corrosive industrial services.

Why Monel 400 / UNS N04400?

Excellent Resistance to: Seawater, brackish water, hydrofluoric acid, sulfuric acid (reducing conditions), and neutral salts.
High Resistance to: Stress-corrosion cracking (SCC) in chlorides.
Caution: Not recommended for oxidizing acids (e.g., nitric acid) or heavily oxidizing conditions where passivity breaks down.

Equivalent Material of ASTM B564 UNS N04400 Nickel Alloy Flange

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

Chemical Properties % of ASTM B564 Monel 400 Flange UNS N04400 Nickel-Copper Alloy Flange

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

Mechanical Characteristics of ASTM B564 Monel 400 Flange UNS N04400 Nickel-Copper Alloy Flange

Density	Melting Point	Yield Strength (0.2%Offset)	Tensile Strength	Elongation
8.8 g/cm3	1350 °C (2460 °F)	Psi - 35,000 , MPa - 240	Psi - 80,000 , MPa - 550	40 %

Manufacturing & Heat Treatment

Forging Process: The billet is heated and forged to refine the grain structure.
Heat Treatment: Annealed at 1,300 – 1,600 °F (704 – 871 °C) followed by rapid cooling (water quench) to ensure consistent grain size and optimal corrosion resistance.
Machining: RTJ grooves must be machined to a specific roughness (generally 63–125 Ra microinches) to ensure proper gasket seating.
NDE (Non-Destructive Examination): Usually subjected to Liquid Penetrant (PT) or Magnetic Particle (MT) inspection as per ASME Section V, often with 100% visual and dimensional checks.

Application