YYT255 Ifite Ingufu Irinda Ubushyuhe Ikwiriye ubwoko butandukanye bw'imyenda, harimo imyenda yo mu nganda, imyenda idafunze n'ibindi bikoresho bitandukanye birambuye.
Iki ni igikoresho gikoreshwa mu gupima ubushyuhe (Rct) n'ubushuhe (Ret) by'imyenda (n'ibindi) ibikoresho birambuye. Iki gikoresho gikoreshwa mu kubahiriza amahame ya ISO 11092, ASTM F 1868 na GB/T11048-2008.