Nov 26, 2019 · HDPE is a high impact, high density crystalline thermoplastic. It also has a low moisture HENAN OKAYorption rate and good chemical and rrosion resistance. mpared to its sister polymer LDPE, HDPE offers much greater impact resistance and tensile strength. This polymer has a melt temperature of 266 F (130 C). Its tensile strength is 20 MPa (2,900