What makes toughened glass tough?

  1. shazwellyn profile image54
    shazwellynposted 5 years ago

    What makes toughened glass tough?

  2. WD Curry 111 profile image59
    WD Curry 111posted 5 years ago

    The heat and skill applied to the process is what makes tempered glass tough.

  3. hirundine profile image61
    hirundineposted 5 years ago

    Usually regular "hard glass"; like "Pyrex" has borosilicate added. Most cheap hard glass, mainly from China has cheap substitutes within. Other than that? I'm not a glass worker. ... cheers!