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CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

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

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Wages, employment opportunities, and growth projections for STEM jobs.

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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
CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Essentials of Manufacturing

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

3D Scanners

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

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.