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
7%
13%
0%
78%
52
flagMalaysia
11%
11%
3%
74%
27
flagFrance
3%
22%
0%
73%
53
flagItaly
14%
8%
5%
70%
34
flagDenmark
0%
32%
0%
68%
25
flagthe United Arab Emirates
6%
6%
13%
66%
30
flagthe United Kingdom
7%
23%
2%
65%
634
flagthe Netherlands
10%
24%
0%
65%
83
flagPoland
8%
26%
2%
61%
15037
flagPakistan
4%
14%
16%
61%
42
flagGermany
4%
32%
0%
60%
196
flagthe United States
10%
22%
6%
59%
1074
flagIndia
9%
23%
6%
59%
529
flagRepublic of Ireland
5%
32%
2%
58%
70
flagthe Philippines
7%
17%
11%
58%
51
flagNorway
10%
27%
4%
58%
48
flagUkraine
16%
20%
4%
58%
24
flagUnknown
5%
38%
0%
54%
121
flagCanada
7%
30%
5%
54%
55
flagNigeria
17%
13%
21%
43%
23

Gender

men59%
women64%
glass
10%
7%
ceramic
27%
26%
metal
2%
2%
glass-ceramic
59%
64%

Language versions

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answers
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What kind of material is this cooktop made of?
2541
60%

Details

Author: Bob Stanley
Illustration: Kai Hendry
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