R.K. Steels (India)
Home
About us
Technical Data
Products
Services
Contact us
Feedback
 
 
Welcome to R.K.Steels

INCOLOY 925 COMPOSITION

Find below the search results for the material you've specified. Please note here this information is NOT to be used for design purposes, and in no event shall MSO be liable for any damages arising from the misuse of this information

Super Alloy Incoloy(r) Alloy 925(tm)

Related Metals:

No Related Metal names.                                     

Specifications:

UNS N09925

Chemistry Data

Aluminum

0.15 - 0.5

Carbon

0.03 max

Chromium

19.5 - 23.5

Copper

1.5 - 3

Iron

Balance

Manganese

1 max

Molybdenum

2.5 - 3.5

Nickel

38 - 46

Niobium

0.5 max

Silicon

0.5 max

Sulphur

0.03 max

Titanium

1.5 - 2.4

General Information

Principal Design Features

This is an age-hardenable alloy of nickel-chromium-iron. The additions of titanium and aluminum enable it to be age-hardened while molybdenum and copper contents enhance resistance to corrosive media. Designed primarily for applications in the production


Applications

It is used in the petroleum industry for applications such as gas well components, valves and tubing, as well as finding use in high-strength piping systems.


Machinability

Conventional machining techniques used for iron based alloys may be used. This alloy does work-harden during machining and has higher strength and "gumminess" not typical of steels. Heavy duty machining equipment and tooling should be used to minimize c


Forming

This alloy has good ductility and may be readily formed by all conventional methods. Because the alloy is stronger than regular steel it requires more powerful equipment to accomplish forming. Heavy-duty lubricants should be used during cold forming. I


Corrosion Resistance

The alloy is highly resistant to a wide variety of corrosive media. It resists pitting, intergranular corrosion, general corrosion, and stress-corrosion cracking. It is an ideal material for use in natural gas production when hydrogen sulfide (sour gas)


Welding

The commonly used welding methods work well with this alloy. Matching alloy filler metal should be used. If matching alloy is not available then the nearest alloy richer in the essential chemistry (Ni, Co, Cr, Mo) should be used. All weld beads should


Heat Treatment

Solution anneal at 1900 F to 1800 F and air cool. Aging is done at 1350 F for 8 hours, furnace cool at 75 F per hour down to 1175 F and hold at 1175 F for at least 12 hours then air cool.


Forging

Forging should be done in the range of 2150 F to 1700 F.


Hot Working

Hot working may be done in the range of 1800 F down to 1600 F. Avoid working at temperatures above 1800 F to retain corrosion resistance.


Cold Working

Cold forming may be done using standard tooling although plain carbon tool steels are not recommended for forming as they tend to produce galling. Soft die materials (bronze, zinc alloys, etc.) minimize galling and produce good finishes, but die life is


Annealing

Anneal at 1850 F for at least 2 hours at temperature, air cool.


Aging

See "Heat Treat".


Hardening

May be hardened by heat treatment - see "Heat Treat" and also hardens due to cold working.


Physical Data

Density (lb / cu. in.)

0.294

Specific Gravity

8.14

Specific Heat (Btu/lb/Deg F - [32-212 Deg F])

0.109

Electrical Resistivity (microhm-cm (at 68 Deg F))

701

Melting Point (Deg F)

2450

Poissons Ratio

0.281

Mean Coeff Thermal Expansion

7.32

Magnetic Permeability

1.01

Modulus of Elasticity Tension

28.7

Mechanical Data

MSO currently has no data available for this grade.

Copyright 2005 R.K.Steels (India). All rights reserved