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AISI 5140H
Category Steel
Class Alloy steel
Type H-steel
Common Names Chromium steel
Designations  France: AFNOR 45 C 2
Germany: DIN 1.7006
United States: ASTM A304 , SAE J1268 , UNS H51400

Composition

ElementWeight %
C  0.37-0.44 
Mn  0.60-1.00 
Cr  0.60-1.00 
P  0.035 
S  0.040 
Si  0.15-0.30 

Mechanical Properties

Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.7-8.03 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 190-210 25  
Tensile Strength (Mpa) 570  25  annealed at 830°C  more
Yield Strength (Mpa) 295 
Elongation (%) 28.6 
Reduction in Area (%) 57 
Hardness (HB) 167  25  annealed at 830°C more

Thermal Properties

Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 12.6  20-200 more  
Thermal Conductivity (W/m-K) 44.6  100 more  
Specific Heat (J/kg-K) 452  20-100 more  

Electric Properties

Properties Conditions 
T (°C)Treatment
Electric Resistivity (10-9W-m) 228  20 more  
Glossary
Salary Expectation

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

CNC Machining Design Guide

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

Mechanical Engineers Outlook

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

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!