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Monel K500 Flanges are premium nickel-copper alloy flanges engineered for high-strength and corrosion-resistant applications. Combining excellent mechanical properties with superior resistance to seawater and harsh chemicals, these flanges are ideal for marine, chemical, and aerospace industries.
Monel K500 is an advanced alloy derived from Monel 400 with additions of aluminum and titanium. These elements enable precipitation hardening, significantly increasing the material’s tensile and yield strength while maintaining excellent corrosion resistance.
These flanges are highly resistant to seawater, brine, and various acidic and alkaline solutions. Their ability to withstand pitting, crevice corrosion, and stress corrosion cracking makes them suitable for extreme environments where other alloys may fail.
Monel K500 Flanges offer higher strength than standard Monel 400, with tensile strengths typically ranging between 85,000–100,000 psi and good fatigue resistance. They maintain their properties across a wide temperature range, making them versatile for critical industrial applications.
Monel K500 Flanges are available in a variety of types, including weld neck, slip-on, blind, socket weld, lap joint, and threaded flanges. This versatility allows them to be used in pipelines, pressure vessels, and other piping systems according to application requirements.
Monel K500 Flanges are available in a variety of types, including weld neck, slip-on, blind, socket weld, lap joint, and threaded flanges. This versatility allows them to be used in pipelines, pressure vessels, and other piping systems according to application requirements.
These flanges conform to international standards such as ANSI/ASME B16.5, ASME B16.47, and DIN equivalents. Material certifications, including EN 10204 3.1/3.2, are available, ensuring traceability and compliance for critical projects.
Monel K500 Flanges are extensively used in marine engineering, offshore platforms, chemical processing plants, oil and gas pipelines, desalination systems, and aerospace components. Their durability ensures long service life under high-pressure and corrosive conditions.
Flanges are manufactured with common face finishes such as raised face (RF), flat face (FF), and ring-type joint (RTJ). Proper installation and maintenance are essential to maximize performance and prevent leakage in piping systems.
Specification Table
| Specification | Description / Value |
|---|---|
| Material | Monel K500 (Nickel-Copper Alloy, Precipitation Hardened) |
| Standards | ASME B16.5, ASME B16.47, ANSI, DIN, ASTM B564 |
| Flange Types | Weld Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded |
| Nominal Pipe Size (NPS) | 1/2" to 60" (DN 15 to DN 1500) |
| Pressure Rating | Class 150, 300, 400, 600, 900, 1500, 2500 |
| Face Type | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Tensile Strength | 85,000 – 100,000 psi (586 – 690 MPa) |
| Yield Strength | 35,000 – 55,000 psi (240 – 380 MPa) |
| Elongation | 25% minimum |
| Hardness | Rockwell B 90 – 100 |
| Temperature Range | -200°C to 315°C (-328°F to 600°F) |
| Applications | Marine, Offshore, Chemical Processing, Oil & Gas, Aerospace |
Chemical Composition (Typical ranges for SSK400)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 63.0 – 70.0 |
| Copper (Cu) | 28.0 – 34.0 |
| Iron (Fe) | ≤ 2.0 |
| Manganese (Mn) | 0.5 – 1.0 |
| Carbon (C) | ≤ 0.30 |
| Aluminum (Al) | 0.85 – 1.20 |
| Titanium (Ti) | 0.40 – 0.70 |
| Phosphorus (P) | ≤ 0.015 |
| Sulfur (S) | ≤ 0.015 |
| Silicon (Si) | ≤ 0.5 |
Mechanical Properties (Typical)
| Property | Value / Range | Unit |
|---|---|---|
| Tensile Strength | 85,000 – 100,000 | psi (586 – 690 MPa) |
| Yield Strength (0.2% offset) | 35,000 – 55,000 | psi (240 – 380 MPa) |
| Elongation (in 2 inches) | 25% minimum | % |
| Hardness (Rockwell B) | 90 – 100 | HRB |
| Modulus of Elasticity | 28,000 – 30,000 | ksi (193 – 207 GPa) |
| Shear Strength | 52,000 – 60,000 | psi (359 – 414 MPa) |
| Fatigue Strength | 35,000 – 45,000 | psi (241 – 310 MPa) |
| Operating Temperature | -200 to 315 | °C (-328 to 600 °F) |
| Impact Strength (Charpy V-notch) | 25 – 35 | ft·lbf (34 – 47 J) |
Equivalent Grades
| Standard / Specification | Equivalent Grade / Alloy |
|---|---|
| ASTM B564 | Monel K-500 |
| ASME SB564 | Monel K500 |
| UNS | N05500 |
| EN / DIN | NiCu30Fe (Precipitation Hardened) |
| JIS | NiCu30Fe Alloy |
| ISO | NiCu30Fe (K500) |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| NPS (inches) | DN (mm) | Flange Type | Outside Diameter (OD) mm | Bolt Circle Diameter (BCD) mm | Number of Bolts | Bolt Size | Flange Thickness (mm) | Approx. Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 1/2" | 15 | Weld Neck | 95 | 70 | 4 | 1/2" | 16 | 0.8 |
| 1" | 25 | Weld Neck | 120 | 95 | 4 | 5/8" | 19 | 1.5 |
| 2" | 50 | Weld Neck | 165 | 125 | 4 | 7/8" | 22 | 3.0 |
| 4" | 100 | Weld Neck | 230 | 190 | 8 | 5/8" | 27 | 7.5 |
| 6" | 150 | Weld Neck | 280 | 240 | 8 | 3/4" | 33 | 13 |
| 8" | 200 | Weld Neck | 355 | 310 | 8 | 7/8" | 41 | 24 |
| 10" | 250 | Weld Neck | 405 | 365 | 12 | 7/8" | 50 | 37 |
| 12" | 300 | Weld Neck | 460 | 425 | 12 | 7/8" | 57 | 52 |
| 16" | 400 | Weld Neck | 580 | 540 | 16 | 1" | 73 | 97 |
| 24" | 600 | Weld Neck | 760 | 710 | 20 | 1 1/8" | 95 | 200 |
Common Types Of Flangess
Ring Flanges
Type of Flanges
General Flanges
Stainless 400 Pipe Flanges
ASME B16.5 Flanges
Stainless 400 Flanges
Frequently Asked Questions (FAQ)
What is Monel K500 Flange?
Monel K500 Flanges are high-strength, corrosion-resistant nickel-copper alloy flanges, strengthened by precipitation hardening. They are used in marine, chemical, oil & gas, and aerospace applications.
What types of flanges are available in Monel K500?
Common types include Weld Neck, Slip-On, Blind, Socket Weld, Lap Joint, and Threaded flanges, designed to meet ANSI/ASME and DIN standards.
What are the key features of Monel K500 Flanges?
They offer high tensile strength, excellent corrosion resistance to seawater and chemicals, good fatigue resistance, and a wide operating temperature range.
What standards do Monel K500 Flanges comply with?
They comply with ASTM B564, ASME SB564, ANSI/ASME B16.5, ASME B16.47, and DIN equivalents. Material certificates (EN 10204 3.1/3.2) are typically available.
,/div>What is the chemical composition of Monel K500?
Monel K500 typically contains 63-70% Nickel, 28-34% Copper, 0.5-1% Manganese, 0.85-1.2% Aluminum, 0.4-0.7% Titanium, with minor Fe, C, Si, P, and S.
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