TADCO Separator Plates are offered in four different stainless steel alloys with varying degrees of
hardness and surface finish: 304, 420, 630 and S-4  Offering a choice of alloys allows TADCO to
design each job to the customers specific needs.  This flexibility makes a world of difference in a
competitive PCB market.  TADCO’s superior quality assures the customer of unsurpassed flatness,
hardness, parallelism and outstanding surface finish.
SPECS:

304 Stainless: 
Custom polish: #4 finish

420 Stainless: 
Hardness: 44/50 Rockwell C 
Parallelism: Within .001″ TIR 
Thickness: ±.003″ 
Custom polish: #4 finish 
Expansion Factor (TCE): 11.6

630 Stainless: 
Hardness: 44/50 Rockwell C 
Parallelism: Within .001″ TIR 
Thickness: ±.003″ 
Custom polish: #6 finish 
Expansion Factor (TCE): 11.6

S-4 Stainless: 
Hardness: 44/50 Rockwell C 
Parallelism: Within .001″ TIR 
Thickness: ±.003″ 
Custom polish: #6 finish 
Expansion Factor (TCE): 16.2