ASTM B564 N04400 Flange, Monel 400 Nickel-Copper Alloy Forged Flange for Corrosion Resistance
Brief Introduction
ASTM B564 N04400 Flange is a high-performance nickel-copper alloy forged flange, strictly manufactured in accordance with ASTM B564 (material standard) and ASME B16.5 (dimensional standard). N04400 (commonly known as Monel 400) is a premium nickel-copper alloy (approximately 65% nickel and 30% copper), renowned for its excellent corrosion resistance to seawater, brine, alkaline solutions, and various organic compounds, as well as good mechanical strength, ductility, and weldability. It is a versatile flange widely used in marine, chemical, and offshore industries, specially designed for medium to high-pressure piping systems that require reliable corrosion resistance and structural stability, serving as a key connection and sealing component in harsh service environments.
Chemical Composition Analysis (wt%)
| Alloy Grade |
Ni |
Cu |
Fe |
Mn |
C |
Si |
S |
Al |
Ti |
| ASTM B564 N04400 (Monel 400) |
63.0-67.0 |
28.0-34.0 |
≤2.5 |
≤1.0 |
≤0.30 |
≤0.50 |
≤0.024 |
≤0.20 |
≤0.15 |
Typical Mechanical Properties
| Mechanical Property |
Standard Requirement (Min.) |
Typical Value (Solution Annealed) |
| Yield Strength (Rp0.2), MPa |
≥240 |
250-350 |
| Tensile Strength (Rm), MPa |
≥550 |
580-700 |
| Elongation (A), % |
≥35 |
40-50 |
| Hardness (HB), Brinell |
≤180 |
150-170 |
| Impact Toughness (KV), J (20℃) |
≥120 |
130-200 |
| Max. Working Temperature |
427℃ (Long-term) |
427℃ |
Available Tests
| Test Type |
Standard |
| Chemical Composition Analysis (PMI) |
Spectrometer (XRF/OES), ASTM E1019 |
| Tensile & Impact Test |
ASTM E8/E8M, ASTM A370, Charpy V-Notch |
| Hardness Test |
ASTM E10 (Brinell), ASTM E18 (Rockwell), Vickers |
| Solution Annealing Inspection |
ASTM B564, Metallographic Microstructure Test |
| Corrosion Resistance Test |
ASTM G48 (Pitting/Crevice), ASTM B117 (Salt Spray), ASTM A262 |
| Non-Destructive Testing (NDT) |
UT (Ultrasonic), MT (Magnetic Particle), PT (Liquid Penetrant) |
| Hydrostatic/Pneumatic Pressure Test |
ASTM B564, ASME B16.5 |
| Dimensional & Visual Inspection |
ASTM B564, ASME B16.5, CMM, Gauge Inspection |
| Material Test Certificate (MTC) |
EN 10204 3.1/3.2, ASTM B564 |
Product Application Scope
| Industry Field |
Typical Applications |
| Marine Engineering |
Ship pipelines, seawater cooling systems, marine engine connections, offshore platform piping flanges |
| Petrochemical & Offshore Oil |
Offshore oil and gas pipelines, brine treatment equipment, oil refining corrosion-resistant flanges |
| Chemical Processing |
Alkaline solution pipelines, organic chemical reaction vessels, acid-neutralizing equipment flanges |
| Seawater Desalination |
Desalination plant pipelines, brine discharge systems, seawater pretreatment equipment flanges |
| Power Generation |
Coastal power plant seawater cooling pipelines, condenser connections, corrosion-resistant flanges |
| Other Corrosion-Prone Fields |
Wastewater treatment equipment, salt production industry pipelines, chemical storage tank connections |
