The temperature at which a polymer sample deforms under a specified load (typically 0.45 MPa or 1.82 MPa). Indicates the upper service temperature limit for structural applications under load.
M
Melt Flow RateMFR
The mass of polymer (in grams) extruded through a standardized die in 10 minutes under specified temperature and load conditions (ASTM D1238 / ISO 1133). Higher MFR indicates lower viscosity and easier flow during injection molding.
T
Tensile Strength
The maximum stress a material can withstand while being stretched or pulled before breaking, measured in MPa (ASTM D638 / ISO 527). A key indicator of mechanical performance for structural parts.
U
UL94 Flammability RatingUL94
A classification system (Underwriters Laboratories) for the flammability of plastic materials. Common ratings include HB (slow burn), V-2, V-1, V-0 (self-extinguishing), and 5VA/5VB (most stringent). Critical for electronics and electrical enclosures.
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