.png)
Alloy K-500 Technical Overview
Monel K-500 (UNS N05500) is a nickel-copper alloy which combines the excellent corrosion resistance of Alloy 400 with the added advantages of greater strength and hardness. These amplified properties are obtained by adding aluminum and titanium to the nickel-copper base and by heating under controlled conditions so that submicroscopic particles of Ni3 (Ti, Al) are precipitated throughout the matrix. Alloy K-500 has approximately three times the yield strength and double the tensile strength when compared with Alloy 400. It is also non-magnetic down to -150°F (-101°C). Steel Emporium provides high-precision Monel K-500 pipes and tubes specifically for heavy-duty marine and oil field applications.
Key Material Advantages
Extreme Strength
Precipitation hardening provides superior mechanical strength and hardness.
Non-Magnetic
Remains non-magnetic even at very low temperatures, unlike other high-strength alloys.
Sour Gas Resistance
Excellent resistance in sour-gas environments, making it ideal for oil fields.
| Grade | Ni (+Co) | Cu | Al | Ti | Fe | Mn | C | Si | S |
|---|---|---|---|---|---|---|---|---|---|
| Monel K-500 | 63.0 min | 27.0 - 33.0 | 2.3 - 3.15 | 0.35 - 0.85 | 2.0 max | 1.5 max | 0.25 max | 0.50 max | 0.01 max |
| Property | Metric Value | Imperial Value |
|---|---|---|
| Tensile Strength (min) | 965 MPa | 140,000 psi |
| Yield Strength (0.2% offset) | 690 MPa | 100,000 psi |
| Elongation (% in 50mm) | 20% | 20% |
| Hardness (Rockwell C) | 28 HRC min | - |
| Property | Value |
|---|---|
| Density | 8.44 g/cm³ (0.305 lb/in³) |
| Melting Range | 1315 - 1350 °C (2400 - 2460 °F) |
| Magnetic Permeability (20°C) | < 1.01 |
| Thermal Conductivity | 17.5 W/m·°C |
| Standard | UNS Number | Werkstoff No. | Common Name |
|---|---|---|---|
| Alloy K-500 | N05500 | 2.4375 | Monel K-500 / Alloy 500 |
| Nominal Size (NB) | OD (mm) | SCH 10 | SCH 40 | SCH 80 |
|---|---|---|---|---|
| 1/2" | 21.34 | 1.34 | 1.71 | 2.24 |
| 1" | 33.40 | 2.21 | 3.42 | 4.48 |
| 2" | 60.33 | 4.16 | 5.75 | 7.91 |
| 3" | 88.90 | 7.09 | 11.95 | 16.16 |
| 4" | 114.30 | 11.68 | 17.03 | 23.65 |
Industrial Applications
Oil Field Tools
Drill collars, instruments, and valve trim.
Marine Industry
Pump shafts, impellers, and marine fasteners.
Aerospace
High-strength aircraft bolts and hardware.
Doctor Blades
Scrapers used in paper and pulp processing.