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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.

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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