Monel K-500
2.4375Age-hardenable version of Monel 400. Al and Ti additions enable precipitation hardening to double the strength of Monel 400. Retains excellent seawater and HF acid resistance. Used for pump shafts, impellers, doctor blades, oil well tools, and marine fasteners.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | ASTM | USA | UNS N05500 | N05500 | REF |
| 🇺🇸 | UNS | USA | N05500 | N05500 | REF |
| 🇪🇺 | EN | Europe | NiCu30Al | 2.4375 | 100% |
| 🇩🇪 | DIN | Germany | NiCu30Al | 2.4375 | 95% |
Sources: ASTM B865, DIN 17743
Mechanical properties — Pro
Aged
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Yield Strength | ||
| Elongation | ||
| Hardness HRC | ||
| Elastic Modulus | ||
| Density |
Annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Yield Strength Rp0.2 |
Age hardened
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Yield Strength Rp0.2 | ||
| Hardness HRC | ||
| Elongation A |
General
| Property | Value | Unit |
|---|---|---|
| Density |
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Hastelloy C-22
2.4602Improved version of Hastelloy C-276 with better resistance to oxidizing media and higher chromium. Considered the most versatile Ni-Cr-Mo alloy for chemical processing. Resists both oxidizing and reducing acids, chlorides, and mixed media. Used for flue gas desulfurization, pharmaceutical, and universal chemical processing.
Alloy 20 / Carpenter 20
2.4660Austenitic Ni-Fe-Cr alloy specifically developed for sulfuric acid resistance. Nb-stabilized against sensitization. Cu addition gives outstanding resistance to H2SO4 at all concentrations up to 80%. Used for sulfuric acid piping, heat exchangers, mixing tanks, pickling equipment, and pharmaceutical processing.
Nimonic 80A
2.4952Nickel-chromium age-hardenable alloy with Ti + Al for gamma-prime strengthening. Developed originally for gas turbine blades. Good creep resistance to ~700°C. Used for exhaust valves, springs at elevated temperatures, nuclear engineering fasteners, and gas turbine components. ≈ UNS N07080.
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