ALLOY 925 Bar

Alternative and trade names
ALLOY 925, UNS N09925
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Description

Alloy 925 is a precipitation hardened nickel-iron-chromium alloy with additions of molybdenum, copper and aluminum. The alloy combines high strength and excellent corrosion resistance. Alloy 925 is used in various applications requiring a combination of high strength and corrosion resistance. Because of the alloy’s resistance to sulfide stress cracking and stress-corrosion cracking in “sour” (H2S containing) crude oil and natural gas, it is used for down-hole and surface gas- well components including tubular products, valves, hangers, landing nipples, tool joints and packers.

Related Standards

Equivalent Materials

This material data has been provided by Sverdrup Steel.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

Properties

Dimension

PropertyValue

Diameter

92 - 290 mm

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Mechanical

PropertyTemperatureValue

Charpy impact energy, V-notch

-60.0 °C

47 J

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Elongation

23.0 °C

25 %

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Hardness, Rockwell C

23.0 °C

38 [-]

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Tensile strength

23.0 °C

965 MPa

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Yield strength Rp0.2

23.0 °C

758 MPa

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Chemical properties

PropertyValue

Aluminium

0.1 - 0.5 %

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Carbon

0.03 %

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Chromium

19.5 - 22.5 %

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Copper

1.5 - 3 %

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Iron

22 %

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Manganese

1 %

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Molybdenum

2.5 - 3.5 %

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Nickel

42 - 46 %

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Niobium

0.5 %

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Phosphorus

0.03 %

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Silicon

0.5 %

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Sulfur

0.03 %

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Titanium

1.9 - 2.4 %

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Technological properties

Property
Application areas

Used in oil production equipment, surface and down hole equipment in sour gas wells. (it is used for down-hole and surface gas- well components including tubular products, valves, hangers, landing nipples, tool joints and packers)

Corrosion properties

The alloy has outstanding resistance to general corrosion, pitting, crevice corrosion and stress corrosion as well as resistance to sulfide stress cracking and stress-corrosion cracking in “sour” (H2S containing) crude oil and natural gas

Heat Treatment

Solution annealed at 980 – 1040°C. Age hardening at 730 – 750°C.

Welding

Very good