7013.42.10.00 - Pressed and toughened (specially tempered)

This HTS category, 7013.42.10.00, specifically classifies glassware of a kind used for table or kitchen purposes, excluding drinking glasses, and which are not made of glass-ceramics. The defining characteristic of this group is that the glass exhibits a low linear coefficient of expansion, not exceeding 5 x 10-6 per Kelvin within the temperature range of 0°C to 300°C. This property indicates a high degree of thermal shock resistance, commonly associated with borosilicate glass or similar specialized compositions.

The "Pressed and toughened (specially tempered)" descriptor within this code signifies that the glass has undergone manufacturing processes to enhance its durability and safety. Pressed glass is formed by shaping molten glass in a mold, while toughened glass is subjected to thermal or chemical treatments to increase its strength and fracture resistance, causing it to break into small, relatively harmless pieces if shattered. This specific combination of material properties and manufacturing methods ensures suitability for demanding kitchen applications where resistance to thermal stress and impact is critical.

As this is a leaf node in the HTS classification, there are no further subcategories. Therefore, the focus is on the specific criteria outlined. Items falling under this code are distinct from other categories of glassware by virtue of their composition (low thermal expansion), manufacturing process (pressed and toughened), and intended use (table or kitchenware, excluding drinking vessels). Examples would include ovenware, mixing bowls, and serving dishes made from this specialized type of tempered glass.