Super Alloy INCOLOY Alloy 028 (UNS N08028)

Jul 4 2013

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication
     Cold Working
Applications

Introduction

INCOLOY alloys are composed of nickel-chromium-iron as the primary elements. Additives that are used in this alloy to enhance its strength, corrosion resistance include molybdenum, copper and nitrogen. These alloys are classified as super alloys due to their high strength and ability to function at high temperatures.

INCOLOY alloy belongs to the austenitic stainless steel group and is resistant to a variety of corrosive environments. The combination of chromium and molybdenum make this alloy resistant to both oxidizing and reducing acids and salts. The copper content makes it resistant to sulfuric acid.

This datasheet will look into the chemical composition, properties and applications of INCOLOY 028.

Chemical Composition

The chemical composition of INCOLOY alloy 028 is given in the following table.

Element Content (%)
Iron, Fe 29-40.4
Nickel, Ni 30-34
Chromium, Cr 26-28
Molybdenum, Mo 3-4
Manganese, Mn ≤2.5
Others Remainder

Physical Properties

The following table discusses the physical properties of INCOLOY alloy 028.

Properties Metric Imperial
Density 8 gm/cm3 0.289 lb/in3

Mechanical Properties

The mechanical properties of INCOLOY alloy 028 are tabulated below.

Properties Metric Imperial
Tensile strength(annealed) 500 MPa 72.5 ksi
Yield strength(annealed) 214 MPa 31 ksi
Elongation at Break(Cold worked) 15% 50%
Modulus of Elasticity 200 GPa 29000 ksi
Hardness, Rockwell B 80-90 80-90
Hardness, Rockwell C 33 33

Other Designations

Some of the designations used to denote INCOLOY alloy 028 are listed below:

  • UNS N08028
  • ASTM B 668
  • ASTM B709
  • ASTM B829

Fabrication

Cold Working

Cold rolling may be done on the alloy after annealing.

Applications

INCOLOY alloy 028 is used in the following applications:

  • Chemical and petrochemical processing industry
  • Downhole service in deep sour gas wells.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
(Logout)
Your comment type
Submit

Sponsored Content

Editorial Highlights

The Current State of the Global Semiconductor Market

The Current State of the Global Semiconductor Market

The global semiconductor market has entered an exciting period. Demand for chip technology is both driving the industry as well as hindering it, with current chip shortages predicted to last for some time. Current trends will likely shape the future of the industry, which is set to continue to show

How are Graphene Batteries Made?

How are Graphene Batteries Made?

The primary distinction between graphene-based batteries and solid-state batteries lies in the composition of either electrode. Although the cathode is commonly changed, carbon allotropes can also be employed in fabricating anodes.

Newsletters you may be interested in

See all Newsletters »

Terms

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.

Provide Feedback