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1235 aluminium drilling entry sheet

Henan Chalco's 1235 aluminium drilling entry sheet are manufactured with state-of-the-art equipment which matches international standards. Tight thickness tolerance, flatness, dimensional accuracy and grease-free surface and hardness optimal for burr-free drilling required in the manufacture of PCB are ensured..


Specification

Aluminium Drilling Entry Sheet
Alloy Temper Specification(mm)
Thickness Width Length
1235 H18 0.14~0.18 1244 1092 1041 940
1220 1067 1016 914


MECHANICAL PROPERTY
Alloy Temper Thickness(mm) U.T.S(Mpa) Elongation(%)
1235 H18 0.14-0.18 170-190 >=2
TOLERANCE
Thickness(mm) Width(mm) Length(mm) Squareness (mm)  
+/-0.005mm 1 1 <=2  

Chemical Composition limits(WT.%)
Alloy Si Fe Cu Mn Mg Cr Ni Zn Ti Al
1235 0.95 0.05~0.20 0.05 - - - 0.10 - Remains