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AISI 4340
ConditionsThermal Expansion Coeff. (10-6/ºC)
T (°C)Treatment
20-100 oil hardened, tempered 630°C  11.5 
20-200 oil hardened, tempered 630°C  12.4 
20-400 oil hardened, tempered 630°C  13.6 
20-600 oil hardened, tempered 630°C  14.3 
Glossary
Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

Essentials of Manufacturing

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

STEM Career Outlook

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

CNC Machining Design Guide

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