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Monel® K-500
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Monel® K-500

Available in any of the 'profile options'

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).

Chemical Composition Specifications Designations Key Features Typical Applications
Element Min % Max %
Ni 63.00 70.00
Co 2.00
Cu 27.00 33.00
Fe 2.00
Al 2.30 3.20
C 0.25
Si 1.00
Mn 1.50
Ti 0.35 0.85
S 0.01
ASTM B865
BS 3075 NA 18
BS 3076 NA 18
ISO 15156-3
(NACE MR 0175)
QQ-N-286
W.Nr 2.4375
UNS N05500
AWS 041
Corrosion resistance similar to Monel 400 but with higher strength and hardness
Low permeability and is non-magnetic to temperatures as low as -101°C (-150°F )
Age hardenable
Good for sea water applications
Pump Shafts
Fasteners
Marine Propeller Shafts
Oil Well Tools
Instruments
Springs
Density 8.44 g/cm³ 0.305 lb/in³
Melting Point 1350°C 2460°F
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/mm² 9573 ksi
Modulus of Elasticity 179 kN/mm² 25962 ksi
Heat Treatment of Finished Parts
Condition as supplied by Alloy Wire Type Temperature Time (Hr) Cooling
°C °F
Annealed Age Harden Δ 580 – 590 1075 – 1095 8 – 10 Air
Spring Temper Age Harden Δ 530 – 540 985 – 1005 4 – 6 Air

Δ Heat treating Monel K-500 in free air can have a detrimental effect on its corrosion resistant properties.

Properties
Condition Approx. tensile strength Approx. operating temperature
N/mm² ksi °C °F
Annealed 650 – 850 94 – 123 -100 to +260 -150 to +500
Annealed + Aged 950 – 1050 138 – 167 -100 to +260 -150 to +500
Spring Temper 1000 – 1300 145 – 189 -100 to +260 -150 to +500
Spring Temper + Aged 1200 – 1500 174 – 218 -100 to +260 -150 to +500

The above tensile strength ranges are typical. If you require different please ask.

*Trade name of Special Metals Group of Companies

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