Monel K-500* * Trade name of Special Metals Group of Companies
W.NR 2.4375
UNS N05500
AWS 041
UNS N05500
AWS 041
This Nickel-Copper alloy is precipitation hardenable, due to
the
additions of Aluminium and Titanium. It combines the corrosion
resistance of Monel 400 but gives the added advantage of extra
strength and hardness (as a result of its age hardening ability).
additions of Aluminium and Titanium. It combines the corrosion
resistance of Monel 400 but gives the added advantage of extra
strength and hardness (as a result of its age hardening ability).
Applications include:
- Pump Shafts
- Fasteners
- Marine Propeller Shafts
- Oil Well Tools
- Instruments
- Springs
| Approximate Chemical Composition | |
| Ni | 63% min |
| Cu | 30% |
| Fe | 2% max |
| Al | 2.3-3.15% |
| Ti | 0.35-0.85% |
| DENSITY | 8.44 g/cm3 | 0.305 lb/in3 |
| MELTING POINT | 1350oC | 2460oF |
| COEFFICIENT OF EXPANSION | 13.7 µm/m °C ( 20 - 100°C) |
7.6 x 10-6 in/in
°F ( 70 - 212°F) |
| MODULUS OF RIGIDITY | 66 kN/m2 | 9573 ksi |
| MODULUS OF ELASTICITY | 179 kN/m2 | 25962 ksi |
| CONDITION OF SUPPLY | HEAT TREATMENT (AFTER FORMING) |
| Annealed | Age harden at 580 - 590oC (1075 - 1095oF) for 8-10 hours and air cool. * |
| Spring Temper | Age harden at 530 - 550oC (985
- 1020oF) for 4-6 hours and furnace cool to 450oC (840oF) at a rate of 8 -15oC (45-60oF) per hour and air cool.* |
| Spring Temper | Age harden at 530 - 540oC (985 - 1005oF) for 4-6 hours and air cool. * |
* heat treating Monel K-500 in free air can have a detrimental
effect on its corrosion resistant properties.
| CONDITION |
APPROX TENSILE STRENGTH |
APPROX SERVICE TEMPERATURE |
||||
| Annealed | 650-850 N/mm2 | 94-123 ksi | -100o to +260oC | -150o to +500oF | ||
| Annealed + Aged | 950-1050 N/mm2 | 138-167 ksi | -100o to +260oC | -150o to +500oF | ||
| Spring Temper | 1000-1300 N/mm2 | 145-189 ksi | -100o to +260oC | -150o to +500oF | ||
| Spring Temper + Aged | 1200-1500 N/mm2 | 174-218 ksi | -100o to +260oC | -150o to +500oF | ||
| STANDARDS | |
| BS 3075 | 3076 NA 18 |
