What kind of material is this cooktop made of?

glass
ceramic
metal
glass-ceramic
Glass-ce­ram­ic ma­te­ri­als share many prop­er­ties with both non-crys­talline glass and crys­talline ce­ram­ic­s. The negative thermal ex­pan­sion of the crys­talline ceramic phase can be balanced with the positive ex­pan­sion of the glassy phase. At a certain point (~70% crys­talline) the glass-ce­ram­ic has a net ex­pan­sion near zero and can sustain repeated and quick tem­per­a­ture changes up to 1000 °C.

Answers distribution

glass
ceramic
metal
glass-ceramic
answers
flagAustralia
5%
16%
0%
77%
68
flagMalaysia
9%
12%
3%
75%
33
flagItaly
11%
11%
4%
72%
44
flagFrance
2%
25%
0%
71%
70
flagthe United Kingdom
6%
22%
2%
67%
770
flagthe United Arab Emirates
6%
6%
12%
67%
31
flagUkraine
15%
15%
3%
66%
33
flagGermany
3%
30%
0%
63%
251
flagRepublic of Ireland
8%
26%
2%
63%
92
flagthe Netherlands
10%
24%
0%
63%
91
flagPakistan
3%
14%
17%
63%
63
flagNorway
8%
24%
3%
63%
61
flagPoland
7%
26%
2%
62%
20120
flagthe United States
10%
22%
6%
58%
1163
flagIndia
9%
24%
7%
57%
643
flagCanada
9%
27%
4%
57%
66
flagthe Philippines
7%
21%
9%
56%
65
flagUnknown
7%
34%
1%
55%
865
flagSweden
21%
25%
0%
53%
28
flagNigeria
13%
13%
20%
48%
29

Gender

men57%
women64%
glass
9%
7%
ceramic
30%
26%
metal
2%
2%
glass-ceramic
57%
64%

Language versions

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What kind of material is this cooktop made of?
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Details

Author: Bob Stanley
Illustration: Kai Hendry
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