Nickel Alloys Alloy K500 Flanges Overview
Zeon Exports supplies Nickel Alloy K500 (Monel, UNS N05500) flanges, an age-hardenable nickel-copper alloy combining Monel 400's corrosion resistance with roughly triple the yield strength for marine and oil & gas process piping.
Nickel Alloy K500 (Monel) Flanges connect and seal seawater and chemical process piping where high strength and corrosion resistance are both required. Precipitation hardened through aluminum and titanium additions, it retains the corrosion resistance of Alloy 400 while offering roughly triple the yield strength and double the tensile strength.
- Age-hardened via aluminum and titanium for very high strength
- Non-magnetic to as low as -101°C (-150°F)
- EN 10204 3.1 certified, export-ready worldwide
Quick Specifications of Nickel Alloys Alloy K500 Flanges
Nickel Alloy K500 (Monel) Flanges are produced to internationally recognized specifications.
| Field | Detail |
|---|---|
| Material/Grade | Nickel Alloy K500 (Monel) |
| UNS | N05500 |
| DIN/Werkstoff Number | 2.4375 |
| Standards | ASTM B865 (Forgings) |
| Form | Weld Neck, Slip-On, Blind, Socket Weld |
| Finish | As specified (confirm on order) |
| Heat Treatment | Age Hardened (Precipitation Hardened) |
| Certification | EN 10204 3.1 |
Equivalent Grades of Alloy K500
Alloy K500 (Monel K-500) is recognized under several international designations below.
| UNS | DIN/Werkstoff Number | Common Trade Name | ASTM/ASME Standard |
|---|---|---|---|
| N05500 | 2.4375 | Monel K-500 | ASTM B865 |
Chemical Composition of Alloy K500
Composition per ASTM B865 for UNS N05500; exact limits can vary slightly by specification and heat.
| Element | Composition (%) |
|---|---|
| Nickel (Ni), min | 63.0 |
| Copper (Cu) | 27.0 – 33.0 |
| Aluminum (Al) | 2.30 – 3.15 |
| Titanium (Ti) | 0.35 – 0.85 |
| Iron (Fe), max | 2.0 |
| Manganese (Mn), max | 1.5 |
| Silicon (Si), max | 0.50 |
Physical Properties of Nickel Alloy K500 (Monel)
Physical properties for Monel K-500, confirmed against manufacturer data.
| Property | Value |
|---|---|
| Density | 8.44 g/cm3 |
| Melting Range | 1315 – 1350°C |
| Magnetic Behaviour | Non-magnetic to about -101°C (-150°F) |
Mechanical Properties of Nickel Alloys Alloy K500 Flanges
Typical minimum mechanical properties for age-hardened UNS N05500; exact ASTM B865 minimums vary by size and condition – confirm on order.
| Property | Minimum Value |
|---|---|
| Tensile Strength | 1000 MPa (145 ksi) |
| Yield Strength (0.2% offset) | 690 MPa (100 ksi) |
| Elongation | 20% |
| Hardness | 25 – 35 HRC (typical) |
| Condition | Age Hardened |
Corrosion Resistance of Nickel Alloy K500 (Monel)
- Nickel Alloy K500 Flanges retain Alloy 400's corrosion profile while adding significant strength.
- Seawater resistance: excellent resistance to seawater and marine atmospheres, ideal for offshore piping.
- Acid resistance: strong resistance to hydrofluoric acid and reducing acids, inherited from the base Alloy 400 chemistry.
- Non-magnetic: remains virtually non-magnetic down to -101°C, useful near magnetic-sensitive equipment.
Heat Resistance of Nickel Alloy K500 (Monel)
Nickel Alloy K500 flanges maintain their strength up to roughly 649°C (1,200°F) and stay ductile and tough at low sub-zero temperatures. Always confirm exact service limits against the governing standard and application before specifying.
Key Properties of Nickel Alloys Alloy K500 Flanges
Beyond corrosion and heat performance, Monel K-500 flanges offer these additional properties.
- Roughly triple the yield strength of Alloy 400
- Good galling and wear resistance versus austenitic bolting
- Age hardened after cold working for maximum strength
- Good toughness maintained into low sub-zero temperatures
Benefits of Nickel Alloys Alloy K500 Flanges
Choosing Monel K-500 flanges from Zeon Exports delivers measurable advantages for your project.
- High strength combined with proven Monel-family corrosion resistance
- Full MTC 3.1 documentation for project QA/QC requirements
- Multiple flange types and pressure classes to match project specs
- Reliable bulk supply with consistent ready stock
- Competitive export pricing for large industrial orders
- Fast dispatch to global project sites and ports
Related Products
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Request a Quote for Nickel Alloys Alloy K500 Flanges
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Call: +91 98205 33105
Email: info@zeonexports.com
Website: www.zeonexports.com
Address: A-7/9, Saboo Building, Ardeshir Dady Cross Lane, Cawasji Patel Tank Road, Mumbai – 400004
Frequently Asked Questions About Nickel Alloys Alloy K500 Flanges
Common questions about Nickel Alloy K500 (Monel) Flanges, answered below.
Q1: What is Nickel Alloy K500 (Monel)?
Ans. Monel K-500 (UNS N05500) is an age-hardenable nickel-copper alloy with roughly triple the yield strength of Alloy 400.
Q2: What flange types are available in Alloy K500?
Ans. We supply Weld Neck, Slip-On, Blind and other flange types manufactured to ASTM B865.
Q3: What standards do Alloy K500 flanges meet?
Ans. Flanges are manufactured to ASTM B865, certified to EN 10204 3.1 mill test certificates.
Q4: Is Alloy K500 magnetic?
Ans. No, Alloy K500 is virtually non-magnetic, remaining so down to about -101°C (-150°F).
Q5: What is the maximum service temperature?
Ans. Alloy K500 maintains its strength up to roughly 649°C (1,200°F); confirm exact limits against your design code.
Q6: Is Alloy K500 suitable for seawater service?
Ans. Yes, Alloy K500 has excellent resistance to seawater, widely used in offshore and marine piping.
Q7: What certification is provided with orders?
Ans. Every order ships with EN 10204 3.1 mill test certificates confirming grade, heat and dimensions.
Q8: Does Zeon Exports supply custom flange sizes?
Ans. Yes, flanges are available in custom sizes and pressure classes on request for bulk industrial orders.



