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Mechanical Engineers Outlook

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

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.

Salary Expectation

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

more free publications
 
AISI 4340
ConditionsHardness
T (°C)TreatmentMethodValue
25 annealed at 810°C   HB 217 
25 normalized at 870°C   HB 363 
25 oil quenched, fine grained, tempered at 205°C   HB 520 
25 oil quenched, fine grained, tempered at 315°C   HB 486 
25 oil quenched, fine grained, tempered at 425°C   HB 430 
25 oil quenched, fine grained, tempered at 540°C   HB 360 
25 oil quenched, fine grained, tempered at 650°C   HB 280 
Glossary
Mechanical Engineers Outlook

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

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.

Salary Expectation

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