Oct 17, · The brands like Dyneema and Spectra have developed UHMW with a high yield strength of 2.4 GPa (2.4 kN/mm2 or 350,000 psi), mait it as strong as steel. The branded plastic material is used in vehicle and personal protection armors, bowstrings, automotive winching, climbing equipment, spear lines for spearguns, cut-resistant gloves, high