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
flagGreece
80%
4%
0%
16%
25
flagBelarus
78%
11%
3%
3%
78
flagPoland
76%
8%
5%
8%
14124
flagRussia
68%
12%
4%
9%
442
flagGermany
65%
10%
10%
11%
623
flagAustria
60%
14%
11%
10%
88
flagAustralia
59%
17%
3%
19%
96
flagUkraine
58%
21%
8%
11%
450
flagSwitzerland
58%
15%
7%
15%
51
flagKazakhstan
53%
21%
4%
17%
75
flagMalaysia
50%
32%
3%
14%
28
flagUzbekistan
50%
23%
11%
11%
26
flagthe United Kingdom
48%
24%
5%
18%
243
flagthe United Arab Emirates
42%
23%
19%
11%
26
flagIndia
38%
15%
14%
29%
796
flagthe United States
37%
24%
7%
27%
440
flagNigeria
34%
19%
15%
27%
126
flagCanada
31%
24%
8%
33%
45
flagPakistan
30%
28%
19%
20%
78
flagthe Philippines
25%
25%
9%
38%
63