The stpfiles/ap203 directory under the ST-Developer installation contains a wide variety of sample files. A few of these are particularly useful for testing. The block.stp file has trivially simple geometry and is a good starter test. The as1_pe.stp file has a good example of a context dependent assembly structure, moon_buggy_asm shows mapped_item assembly structure, and rear.stp is a nicely complex, well filled-out file.

The sample files are listed below:

File Name			Tool 		Design Source
=========			====		==============

1797609in.stp			ST-ACIS		NIST DPPA Repository
2827056.stp			ST-ACIS		NIST DPPA Repository
4pinplug.stp			ST-ACIS		STEP Tools, Inc. customer
53711_74563f01_na.203.stp	Pro/E		NSWCCD  ORDSTALOU
angle1.stp			ST-ACIS		ACIS Alliance
as1_pe.stp			Pro/E		STEPNet
bbt_soe.stp			CATIA		Simulog
bernet2.stp			CATIA		Alcatel Space Industries
bernetl.stp			CATIA		Alcatel Space Industries
block.stp			ST-ACIS		ACIS Alliance
boeing_part.stp			ST-ACIS		NIST DPPA Repository
bracket1-part.stp		ST-ACIS		NIST DPPA Repository
bull.stp			CADDS 5		Raytheon
bull2.stp			CADDS 5		Raytheon
bull3.stp			CADDS 5		Raytheon
calo.stp			CATIA		Alcatel Space Industries
calo02.stp			CATIA		Simulog
calosoe.stp			CATIA		Alcatel Space Industries
chair.stp			ST-ACIS		STEP Tools, Inc. customer
charles1.stp			Pro/E		STEP Tools, Inc.
class2.stp			Pro/E		STEP Tools, Inc.
clevis21.stp			ST-ACIS		NIST DPPA Repository
clevis22.stp			ST-ACIS		NIST DPPA Repository
clevis23.stp			ST-ACIS		NIST DPPA Repository
clip.stp			CATIA		STEP Tools, Inc. customer
cubcylso.stp			CATIA		Alcatel Space Industries
cubsomcy.stp			CATIA		Alcatel Space Industries
cylcub.stp			CATIA		Alcatel Space Industries
cylcubso.stp			CATIA		Alcatel Space Industries
daratech.stp			ST-ACIS		NIST DPPA Repository
ditmixte.stp			CATIA		Alcatel Space Industries
doghouse.stp			ST-ACIS		STEPNet 
essai1_soe.stp			CATIA		Simulog
filler.stp			CADDS 5		Raytheon
g9.stp				CADDS 5		Simulog 
gear.stp			ST-ACIS		NIST DPPA Repository
gehaeuse.stp			ST-ACIS		NIST DPPA Repository
hose-fitting.stp		Pro/E		STEP Tools, Inc. customer
insert_bordure.stp		CATIA		Simulog
interacting_pockets.stp		ST-ACIS		NIST DPPA Repository
iso14649-demo.stp		Pro/E		STEP Tools, Inc.
jack_in_the_box.stp		ST-ACIS		STEP Tools, Inc. customer
jmmstep.stp			CATIA		Alcatel Space Industries
lower_carriage.stp		ST-ACIS		NIST DPPA Repository
mbb.stp				AP203 		STEP Tools, Inc.
mohne.stp			ST-ACIS		NIST DPPA Repository
monster4.stp			ST-ACIS		NIST DPPA Repository
moon_buggy.stp			AP203 		STEPNet 
moon_buggy_asm.stp		AP203  		STEPNet 
mycami2.stp			ST-ACIS		NIST DPPA Repository
nasty_cheese.stp		ST-ACIS		NIST DPPA Repository
new_bull_pin_block.stp		CADDS 5		Raytheon
ph4m3-st.stp			ST-ACIS		STEP Tools, Inc.
pipes.stp			CATIA		GDEB
piston.stp			ST-ACIS		NIST DPPA Repository
piston_lock.stp			ST-ACIS		STEP Tools, Inc. customer
rear.stp			Pro/E		University of Iowa
simple_boeing_part.stp		ST-ACIS		NIST DPPA Repository
snet.stp			Metaphase	Boeing
socket.stp			ST-ACIS		NIST DPPA Repository
socks.stp			CATIA		STEP Tools, Inc. customer
somfil.stp			CATIA		Alcatel Space Industries
somfilso.stp			CATIA		Alcatel Space Industries
st203-bapl.stp			CATIA		Simulog
team.stp			ST-ACIS		NIST DPPA Repository
teampart.stp			Pro/E  		TEAM 
tork.stp			CADDS 5		Raytheon
turbine.stp			Unigraphics	STEP Tools, Inc. customer
unterlaf.stp			ST-ACIS		NIST DPPA Repository
upper_carriage.stp		Unigraphics	NIST DPPA Repository
vaccase_asm_solid.stp		Pro/E		NIST DPPA Repository
valve.stp			ST-ACIS		NIST DPPA Repository
vs_training.stp			ST-ACIS		NIST DPPA Repository
weldment_asm_solid.stp		Pro/E 		NIST DPPA Repository