Metal Alloys
Alloy Home
Aluminum Alloys
General Information
Properties
Temper
Al Alloy Types
Cast Alloys
Wrought Alloys
Al Alloy List
Wrought:
   AA 1xxx
   AA 2xxx
   AA 3xxx
   AA 4xxx
   AA 5xxx
   AA 6xxx
   AA 7xxx
Cast:
   2xx.0 or x2xx.0
   3xx.0 or x3xx.0
   4xx.0 or x4xx.0
   5xx.0 or x5xx.0
   7xx.0
   8xx.0
Specific Al Alloy
General Information
Resources
Bibliography
Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

Metal 3D Printing Design Guide

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

CNC Machining Design Guide

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

more free publications
 
AA 2218
Category Aluminum Alloy
Class Wrought

Composition
ElementWeight %
Al  92.50 
Cu  4.0 
Mg  1.5 
Ni  2.0 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 2.81 25  
Poisson's Ratio 0.33 25  
Elastic Modulus (GPa) 70-80 25  
Tensile Strength (Mpa) 405  25  T61  more
Yield Strength (Mpa) 305 
Elongation (%)  
Reduction in Area (%)  
Hardness (HB500) 115  25  T61 more
Shear Strength (MPa) 205  25  T72  

Thermal Properties
Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 22.3  20-100  
Thermal Conductivity (W/m-K) 148  25  T61 more

Electric Properties
Properties Conditions 
T (°C)Treatment
Electric Resistivity (10-9W-m) 45  25  T61 more
Glossary
Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

Metal 3D Printing Design Guide

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

CNC Machining Design Guide

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