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
flagAzerbaijan
83%
8%
0%
8%
12
flagGermany
81%
3%
8%
5%
85
flagthe Netherlands
80%
10%
0%
10%
10
flagBelarus
78%
10%
0%
5%
19
flagPoland
74%
9%
6%
8%
10817
flagRussia
73%
10%
2%
12%
75
flagAustria
70%
10%
20%
0%
10
flagKazakhstan
63%
22%
0%
13%
22
flagSwitzerland
61%
16%
11%
11%
18
flagMalaysia
57%
28%
0%
14%
14
flagUkraine
56%
26%
7%
9%
153
flagAustralia
54%
22%
4%
18%
22
flagthe United Kingdom
50%
21%
3%
24%
66
flagNigeria
50%
0%
8%
41%
12
flagIndia
42%
9%
15%
30%
291
flagthe United States
37%
22%
10%
27%
214
flagCanada
30%
30%
15%
23%
13
flagPakistan
29%
22%
25%
22%
27
flagthe Philippines
21%
28%
7%
39%
28