Chris Phelan and Jason Quigley advanced to the finals of the Algirdas Socikas Multi-Nations following a double over the host nation in Lithuania on Friday.
But Eric Donovan, Philip Sutcliffe and John Joe Joyce bowed out after last-four reversals in Kaunas.
Ken Egan is also out after picking up a neck injury in Thursday’s win over Danish light-heavyweight Jim Anderson.
Egan was due to meet Aussie 2012 Olympian Damien Hooper – who he beat at the Olympic Test Event in London last December – in the semi-final 81kg semi-final but withdrew because of the injury.
Phelan and Quigley recorded 10-6 and 11-3 decisions over Lithuanian pair of Marius Vysniaukas and Mantas Balciauskas to book their tickets into Saturday’s flyweight and middleweight finals.
Sutcliffe and Joyce lost to Australian 2012 Olympians Jeff Horne and Cameron Hammond and St Michael’s Athy lightweight Donovan was beaten 11-7 by Russia’s Ruslan Kamilov.
Ireland will be taking home at least two silver and four bronze medals from the tournament.
Algirdas Socikas Multi-Nations Kaunas, Lithuania May 10th/13th
52kg: Chris Phelan (Ireland) beat Marius Vysniaukas (Lithuania) 10-6
60kg: Eric Donovan (Ireland) lost to Ruslan Kamilov (Russia) 7-11
64kg: Philip Sutcliffe (Ireland) lost to Jeff Horne (Australia) 9-14
69kg: John Joe Joyce (Ireland) lost to Cameron Hammond (Australia) 7-11
75kg: Jason Quigley (Ireland) beat Mantas Balciauskas (Lithuania) 11-3
81kg: Kenny Egan (Ireland) lost to Damien Hooper (Australia) W/O
Q/Finals 10th May
56kg: Tyrone McCullagh (Ireland) lost to Roman Romanenko (Russia) 7-9
60kg: Eric Donovan (Ireland) beat Nikita Farions (Latvia) 13– 5
64kg: Philip Sutcliffe (Ireland) beat Augusta Baniulis (Lithuania) Rsc 2
69kg: John Joe Joyce (Ireland) beat Lithuanian W/O
75kg: Jason Quigley (Ireland) beat Artjom Fjodorov (Estonia) 16 – 6
81kg: Kenny Egan beat Jim Anderson (Denmark) 11 – 9
91kg: Stephen Ward lost to Tadas Tamasauskas (Lithuania) -12
91+ kg: Sean Turner lost to Anthony Joshua (England) 5-9