These Charts show the thermal deformation temperature and the softening temperature (called the âVicat softening temperatureâ) of major plastics. The heat distortion temperature is the temperature when the test piece placed in the heat medium with bending load applied reaches a specified deflection as temperature rises. The Vicat softening temperature is defined as the temperature where the needle shaped penetrator sinks into the test piece to a specified depth as temperature of the heating medium rises and specified vertical load is applied to the test piece.
Puerto Rico is a territory (Commonwealth) of the United States of America and Puerto Ricans have common citizenship, currency and defense. Although Puerto Ricans are U.S. citizens, residents of Puerto Rico pay no federal income tax, nor can they vote in presidential elections.
They were here. My grandparents on my dads side are dominican and they have been in the USA since the 1920's. They come from Puerto Rico which is a Common wealth of the USA. Puerto ricans are American Citizens.Some are white, black and native, some are all three.A diverse bunch we are. Source(s): I am a black Dominican/Chinese gal.y grandparents on my dads side are dominican and they have been in the USA since the 1920's. They come from Puerto Rico which is a Common wealth of the USA. Puerto ricans are American Citizens. Some are white, black and native, some are all three.