Items Requirements
Thickness difference △ta≤0.5mm
tmax-tmin≤0.5mm
Surface length difference △Lm≤1.0mm( ln≤1500mm)
△Lm≤2.0mm( ln>1500mm)
Surface width difference △Wa≤0.1mm
Wmax-Wmin≤0.2mm
Squareness Qmax≤0.2mm
Strightness Smax≤0.3mm/m
Flatness Fw≤0.20% (up warp ), Fw≤0.15% (down warp)
Fl ≤1.00%( up warp), Fl ≤0.50%(down warp)
Opening Qa≤0.15mm
Qmax≤0.20mm
Hight difference ha≤0.10mm
hmax≤0.15mm