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Haynes˘ 25 / L605
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Haynes˘ 25 / L605

Available in any of the 'profile options'

Haynes 25/L605 is a Cobalt-Nickel-Chromium-Tungsten alloy that combines good high temperature strength with good resistance to oxidising environments up to 980oC (1795oF) for long exposures. It also has excellent resistance to sulphidation.

Haynes 25/L605 is also known as Udimet L605.

Chemical Composition Specifications Designations Key Features Typical Applications
Element Min % Max %
C 0.05 0.15
Mn 1.00 2.00
Si 0.40
P 0.04
S 0.03
Cr 19.00 21.00
Ni 9.00 11.00
W 14.00 16.00
Fe 3.00
Co bal
AMS 5796
AMS 5759
ASTM F90
BS HR 40
ISO 15156-3
(NACE MR 0175)
W.Nr 2.4964
UNS R30605
AWS 060
Good resistance to oxidising environments at high temperatures for long exposures
Excellent resistance to sulphidation
High temperature static applications**
Parts for gas turbine engines and bearings
Density 9.13 g/cm³ 0.330 lb/in³
Melting Point 1410°C 2570°F
Coefficient of Expansion 12.3 μm/m °C (20 – 100°C) 6.8 x 10-6 in/in °F (70 – 212°F)
Modulus of Rigidity 98 kN/mm² 14214 ksi
Modulus of Elasticity 225 kN/mm² 32634 ksi
Heat Treatment of Finished Parts
Condition as supplied by Alloy Wire Type Temperature Time (Hr) Cooling
°C °F
Annealed or Spring Temper Stress Relieve 400 – 450 750 – 840 2 Air
Properties
Condition Approx. tensile strength Approx. operating temperature
N/mm² ksi °C °F
Annealed 900 – 1500 131 – 218 -200 to +900 -330 to +1650
Spring Temper 1400 – 1800 203 – 261 -200 to +900 -330 to +1650

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

* Trade name of Haynes International

** Static applications = still/fixed/motionless/rigid

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