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AISI M3 class 1
Category Steel
Class Tool steel
Type Molybdenum high speed steel
Designations United States: UNS T11313

Composition
ElementWeight %
C  1.00-1.10 
Mn  0.15-0.40 
Si  0.20-0.45 
Cr  3.75-4.50 
Ni  0.3 
Mo  4.75-6.50 
W  5.00-6.75 
V  2.25-2.75 
Cu  0.25 
P  0.03 
S  0.03 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 8.15 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 190-210 25  

Thermal Properties
Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 11.5  20-425 more  
Glossary
Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

Mechanical Engineers Outlook

Guide for those interested in becoming a mechanical engineer. Includes qualifications, pay, and job duties.

Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.