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N04400 WNRF Flanges ASTM B564 Compliant High-Performance Corrosion Resistant Flanges

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N04400 WNRF Flanges ASTM B564 Compliant High-Performance Corrosion Resistant Flanges

Name: N04400 WNRF Flanges ASTM B564 Compliant HighPerformance Corrosion Resistant Flanges
Brand: YUHONG
Price: 1 USD

China N04400 WNRF Flanges ASTM B564 Compliant High-Performance Corrosion Resistant Flanges factory

Brand Name : YUHONG

Model Number : ASTM B564 N04400

Certification : API, PED

Place of Origin : CHIAN

MOQ : 1PC

Price : Negotiable

Payment Terms : L/C,T/T

Supply Ability : 100 TONS PER MONTH

Delivery Time : Depends on quantity

Packaging Details : PLY-WOODEN CASE

Material Standard : ASTM B564

Alloy Grade : UNS N04400 / Monel 400

Flange Type : WNRF (Weld Neck Raised Face)

Pressure Rating : Class 150# / 300# / etc.

Size Range : 1/2" to 24" (DN15-DN600)

Temperature Range : -200°F to 1000°F (-129°C to 540°C)

Corrosion Cert : NACE MR0175 / MR0103

Face Finish : 125-250 AARH

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Monel 400 WNRF Flanges (ASTM B564 N04400) - High-Performance Corrosion Resistant Flanges

1. Introduction to Monel 400 WNRF Flanges

Monel 400 (UNS N04400) weld neck raised face (WNRF) flanges, manufactured under ASTM B564 standard, deliver

exceptional resistance to corrosive environments. As a nickel-copper alloy, Monel 400 maintains superior mechanical

properties from cryogenic temperatures up to 1000°F (540°C), making it ideal for critical applications in marine, chemical,

and oil & gas industries. These flanges ensure leak-proof performance under high-pressure conditions.

2. Monel 400 Chemical Composition (ASTM B564)

Element	Composition (%)	ASTM B564 Requirement
Nickel (Ni)	63.0 min	63.0 min
Copper (Cu)	28.0–34.0	28.0–34.0
Iron (Fe)	2.5 max	2.5 max
Manganese (Mn)	2.0 max	2.0 max
Carbon (C)	0.3 max	0.3 max
Silicon (Si)	0.5 max	0.5 max
Sulfur (S)	0.024 max	0.025 max

3. Equivalent Grades & Specifications

Monel 400 is globally recognized under multiple standards:

Standard	Equivalent Designation
UNS	N04400
EN	NiCu30Fe (2.4360)
ASME	SB-564, SB-127
ASTM	B564, B127
NACE MR0175	Compliant

4. Monel 400 Mechanical Properties (WNRF Flange)

Flanges meet ASTM B564 minimum requirements for forged products:

Property	Value	Test Method
Tensile Strength	80 ksi min (550 MPa min)	ASTM E8/E8M
Yield Strength (0.2% Offset)	35 ksi min (240 MPa min)	ASTM E8/E8M
Elongation	30% min	ASTM E8/E8M
Hardness	65–95 HRB	ASTM E18
Impact Strength (Charpy)	70 ft-lb min (95 J min)	ASTM E23

5. Key Advantages of Monel 400 WNRF Flanges

Corrosion Resistance: Excellent against seawater, hydrofluoric acid, alkalis, and sulfuric acid.

Thermal Stability: Maintains strength from -200°F to 1000°F (-129°C to 540°C).

Stress-Corrosion Cracking (SCC) Resistance: Superior to stainless steels in chloride-rich environments.

Fabrication Ease: Weldable via TIG/MIG methods (use ENiCu-7 filler).

Non-Magnetic: Essential for subsea and electronic applications.

6. Monel 400 Flange Applications

WNRF flanges in Monel 400 are specified for:

Marine Engineering: Seawater piping, pump shafts, propeller shafts.

Chemical Processing: Reactors, HF alkylation units, acid storage tanks.

Oil & Gas: Offshore platform components, umbilicals, subsea valves.

Power Generation: Feedwater heaters in nuclear/thermal plants.

Desalination Plants: Brine heaters, evaporator tubes.

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