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Eaton Alloys PTE LTD. was established in 2011 (as Eaton Alloys Limited) and has grown consistently over this time to become a specialized supplier for specialty metals widely used in oil a

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Singapore

Add.: 139 Bedok North Avenue 3, #10-188, Singapore 460139
Tel: 0065 9664 4411
Email:tonytay@eatonalloys.com

Web:www.eatonalloys.com

China

Add.: 489# Guanghua Dong 3rd Road, Chengdu, China, 610091
Tel: 0086 28 81703462
Email: sales@eatonalloys.com
Web: www.eatonalloys.com


925Alloy

 
Alloy 925 / Incoloy 925 / UNS N09925 is an age hardenable nickel-iron-chromium alloy with the addition of molybdenum, copper, titanium and aluminium. Each of these additions play their own part in making Alloy 925 a high strength alloy with excellent corrosion resistance. Alloy 925 is used in various applications in the crude oil and natural gas industry this is because Alloy 925 is resistant to sulfide stress cracking and stress-corrosion cracking and therefore a perfect alloy for use down-hole and surface gas well components.

High levels of nickel ensure protection against stress corrosion cracking, whilst the additional molybdenum and copper resist reducing environments, in the same way that Chromium resists oxidising environments. Molybdenum enhances resistance to pitting and crevice corrosion, lifting the Pitting Resistance Equivalent number (PREN) to above 26. With such a balanced composition, Alloy 925 is particularly suited to down-hole applications in sour gas wells , but can also be used in less aggressive applications as it resists general, pitting, crevice and stress corrosion cracking in most aqueous environments where chloride or sulphide ions may be present.

Applications

Packers
Safety valves
Hangers
Marine and pump shafting
Landing nipples
Fasteners

Chemical Composition (Wt %)
Ni 42-46
Cr 19.5-22.5
Mo 2.5-3.5
Ni + Ta 0.08-0.50
Ti 1.9-2.4
Cu 1.5-3.0
Al 0.10-0.50
C 0.025 max
Mn 0.5-0.9
P 0.02 max
S 0.003 max
Si 0.35 max
Fe Balance

Mechanical Properties

Tensile Strength 140 ksi min
Yield Strength (0.2% Offest) 110 ksi min
Elongation 18% min
Reduction of Area 25% min
Hardness 26-38 HRC
Charpy V Impact @35-75 degree F 35 ft-lbs

Specifications
UNS N09925
ASTM B805
NACE MR 0175-3
API 6A CRA 925