What is steel made of?

iron and coal
iron and titanium
iron and quartz
iron and magnesium
Carbon steel, composed simply of iron and carbon, accounts for 90% of steel production. Low alloy steel is alloyed with other elements, usually molybdenum, manganese, chromium, or nickel, in amounts of up to 10% by weight to improve the hardenability of thick sections.
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Answers by country

iron and coal
iron and titanium
iron and quartz
iron and magnesium
answers
flagBelarus
80%
9%
2%
4%
41
flagGreece
78%
4%
0%
17%
23
flagPoland
75%
9%
5%
8%
12399
flagArmenia
75%
12%
6%
6%
16
flagGermany
73%
5%
10%
8%
235
flagRussia
72%
11%
4%
9%
183
flagAustria
71%
13%
10%
2%
38
flagAustralia
67%
16%
3%
13%
61
flagAzerbaijan
62%
12%
6%
6%
16
flagSwitzerland
59%
14%
11%
14%
27
flagUkraine
58%
23%
6%
11%
303
flagKazakhstan
56%
24%
2%
13%
37
flagMalaysia
52%
28%
0%
19%
21
flagNigeria
51%
8%
14%
22%
35
flagthe United Kingdom
48%
23%
5%
21%
131
flagIndia
41%
13%
13%
29%
529
flagPakistan
37%
23%
17%
21%
51
flagthe United States
36%
23%
9%
26%
277
flagCanada
30%
26%
8%
34%
23
flagthe Philippines
26%
21%
4%
43%
41