Stellite™ 31 Alloy

Nominal Composition (Mass %) and Physical Properties

Co Cr W C Ni Others Hardness Density (deposit) Melting Range
Base 26 7.5 0.5 10.5 Mo, Fe, Si 25-35 HRC* 8.61 g/cm3
0.311 lb/in3

*Hardness dependent on amount of work hardening.

Stellite 31

Stellite cobalt-based alloys consist of complex carbides in an alloy matrix. They are resistant to wear, galling, and corrosion and retain these properties at high temperatures. Their exceptional wear resistance is due mainly to the unique inherent characteristics of the hard carbide phase dispersed in a CoCr alloy matrix. 

Stellite 31 is a cobalt-base, high-temperature superalloy having high tensile and creep properties. It is superior in stress-rupture properties to many alloys commercially available, especially at 1700°F (926°C) and 1800°F (980°C). Stellite 31 is resistant to oxidizing and reducing atmospheres up to 2100°F (1150°C). It has excellent resistance to thermal and mechanical shock. Due to its high-temperature properties, Stelllite 31 is often used in gas turbine engines in areas subject to hot gas erosion, as well as furnace working tools that require a combination of mechanical integrity and hot wear resistance. 

Stellite 31 Cast Microstructure
UNS R30031 Castings, P/M Components, Powder
AMS 5382 Castings
ASTM A732 Gr.31 Castings


Stellite 31 Alloy Data Sheet

Check out our Stellite 31 Alloy data sheet for additional information.

View Now
Please adjust the following properties from

ISO Catalog Number

ANSI Catalog Number

to find similar products.


You are about to create a duplicate . Do you want to proceed?
You are about to permanently delete Do you want to proceed?
You are about to permanently delete and all items within that folder. Do you want to proceed?
Are you sure you want to permanently delete these items?
What would you like to rename your to?

A folder with the name already exists .

Please enter a valid name
Please enter a name for the duplicate
Please enter a valid name
You are about to add to your My Solutions page. Do you want to proceed?

A folder with the name already exists .

Please enter a valid name
Send a copy of

Oops, you have used your own email address! Please enter another email address to proceed.

An active user does not exist under that email address. Please Click Here , to send a registration invitation to

Please enter a valid Email
Please enter a valid name
You should be logged to see your dashboard information
Session expired due to inactivity, please login again
The product/s () you were trying to add to the cart is/are not available, please contact customer service
item(s) successfully added to the cart
View Cart

. Please enter the desired qty for the material(s) you want to include in your promotion or Proceed Without Promotion and only your base materials will be added to the cart.

Minimum quantity should be

SAP Material Number ISO Catalog Number Grade    
Thank you for your registration, pending approval & completion of the registration, your access is currently limited. Full utilization of product search capabilities & collaboration space is available and will remain. Please allow 2 business days for registration completion.

You are about to leave the Solution building process.

Are you sure you want to leave?