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Kobe Steel Ltd.
Aluminum Alloys for Disk Blanks

Kobe Steel Ltd. manufactures high-quality aluminum alloys for disk blanks in both thin film media and oxide coating media applications. Our products feature excellent mechanical properties suitable for both thin film media and oxide coat media applications.

The following technical data are available below :

Aluminum alloys for disk blanks in thin film media and oxide coating media applications
 
Applications
Aluminum Alloys Application
Code Name Thin Film Media Oxide Coat Media
5086 CD-1 Y Y
KS5586C PD-1 Y  
KS5586D PD-2 Y  
KS5286 CD-2   Y
KS5186 CD-3   Y
KS5386 AD-2   Y
KS5686 AD-3   Y
 
Chemical Composition
Aluminum Alloys Si Fe Cu Mn Mg Cr Zn Ti Others Al
Code Name Each Total
5086 CD-1 0.40 0.50 0.10 0.20-0.70 3.5-4.5 0.05-0.25 0.25 0.15 0.05 0.15 Re.
KS5586C PD-1 0.06 0.08 0.09-0.15 0.05 3.5-4.5 0.10 0.25-0.35 0.02 0.03 0.10 Re.
KS5586D PD-2 0.04 0.05 0.03-0.09 0.05 3.5-4.5 0.10 0.10-0.20 0.02 0.03 0.10 Re.
KS5286 CD-2 0.10 0.16 0.03 0.20-0.70 3.5-4.5 0.05-0.25 0.05 0.03 0.05 0.15 Re.
KS5186 CD-3 0.10 0.16 0.03 0.05 4.3-4.9 0.10 0.05 0.03 0.05 0.15 Re.
KS5386 AD-2 0.03 0.02 0.02 0.03 4.0-5.0 0.03-0.10 0.02 0.03 0.05 0.15 Re.
KS5686 AD-3 0.10 0.10 0.03 0.05 4.0-5.0 0.05 0.05 0.03 0.05 0.15 Re.

Unit number shows max value in this table.
Re.: Remainder

Mechanical Properties
Aluminum Alloys Temper
H24
Code Name Tensile Strength (N/mm2) Yield Strength (N/mm2) Elongation (%) Tensile Strength (N/mm2) Yield Strength (N/mm2) Elongation (%)
5086 CD-1 245-305 100 18 295 185 10
KS5586C PD-1 205-275 80 18 295 185 10
KS5586D PD-2 205-275 80 18 295 185 10
KS5286 CD-2 205-275 80 18 295 185 10
KS5186 CD-3 205-275 80 18 295 185 10
KS5386 AD-2 205-275 80 18 295 185 10
KS5686 AD-3 205-275 80 18 295 185 10

Unit number shows min. value in this table.


Contact Marubeni Sunnyvale

For more information on these aluminum alloys and other products from Kobe Steel Ltd, please contact Marubeni Sunnyvale and we will send you a full brochure.