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
Hydraulics & Pneumatics

For design and manufacturing engineers involved in buying or specifying fluid power components and systems.

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

Laser Focus World

Semiconductors, medical equipment, lasers, optics and aviation and aerospace.

more free magazines
 
AISI P20
Category Steel
Class Tool steel
Type General mold steel
Designations  Germany: DIN 1.2330
United States: ASTM A681 , UNS T51620

Composition
ElementWeight %
C  0.28-0.40 
Mn  0.60-1.00 
Si  0.20-0.80 
Cr  1.40-2.00 
Mo  0.30-0.55 
Cu  0.25 
P  0.03 
S  0.03 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.85 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) 12.8  20-425 more  
Glossary