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AISI Type 446
Category Steel
Class Stainless steel
Type Ferritic standard
Common Names Chromium steel
Designations  United States: ASME SA268 , ASTM A176 , ASTM A268 , ASTM A276 , ASTM A314 , ASTM A473 , ASTM A511 , ASTM A580 , FED QQ-S-763 , FED QQ-S-766 , MIL SPEC MIL-S-862 , SAE J405 (51446) , UNS S44600

Composition
ElementWeight %
C  0.20 
Mn  1.50 
Si  1.00 
Cr  23.0-27.0 
P  0.04 
S  0.03 
N  0.25 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.5 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 200 25  
Tensile Strength (Mpa) 480  25  annealed, hot finished (wire) more
Yield Strength (Mpa) 275 
Elongation (%) 20 
Reduction in Area (%) 45 
Hardness (HRB) 95 (max)  25  annealed (plate, sheet, strip) 

Thermal Properties
Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 10.4  0-100 more  
Thermal Conductivity (W/m-K) 20.9  100 more  
Specific Heat (J/kg-K) 500  0-100   

Electric Properties
Properties Conditions 
T (°C)Treatment
Electric Resistivity (10-9W-m) 670  25   
Glossary
Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

Mechanical Engineers Outlook

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

Essentials of Manufacturing

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

Metal 3D Printing Design Guide

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