Metal Alloys
Alloy Home
Steels
Tool Steels
General Information
Properties
Tool Steel Types
High-Speed
Hot-Work
Cold-Work
Shock-Resistant
Mold
Special-Purpose
Water-Hardening
Tool Steel List
AISI Ax
AISI Dx
AISI Hx
AISI Lx
AISI Mx
AISI Ox
AISI Px
AISI Sx
AISI Tx
AISI Wx
Specific Tool Steel
General Information
Resources
Bibliography
Quality Magazine

Techniques to improve quality on the shop floor and in manufacturing planning.

Salary Expectation

8 things to know about the interview question "What's your salary expectation"?

Offshore

International news and technology for marine/offshore operations around the world.

Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

more free magazines
 
AISI M4
Category Steel
Class Tool steel
Type Molybdenum high speed steel
Designations  United States: ASTM A600 , FED QQ-T-590 , SAE J437 , SAE J438 , UNS T11304

Composition
ElementWeight %
C  1.25-1.40 
Mn  0.15-0.40 
Si  0.20-0.45 
Cr  3.75-4.75 
Ni  0.3 
Mo  4.25-5.50 
W  5.25-6.50 
V  3.75-4.50 
Cu  0.25 
P  0.03 
S  0.03 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.97 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) 9.5  20-260 more  
Glossary