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
flagthe Netherlands
81%
9%
0%
9%
11
flagAustria
77%
5%
11%
5%
18
flagPoland
75%
9%
5%
8%
11323
flagGermany
75%
5%
11%
7%
127
flagBelarus
73%
15%
3%
3%
26
flagRussia
72%
10%
2%
12%
102
flagRepublic of Ireland
66%
8%
16%
8%
12
flagKazakhstan
65%
21%
0%
13%
23
flagMalaysia
61%
27%
0%
11%
18
flagUkraine
58%
23%
6%
11%
190
flagAustralia
58%
20%
5%
15%
39
flagSwitzerland
54%
18%
13%
13%
22
flagthe United Kingdom
48%
21%
4%
22%
84
flagNigeria
46%
0%
13%
33%
15
flagIndia
41%
11%
14%
30%
381
flagthe United States
37%
23%
9%
27%
237
flagPakistan
33%
21%
21%
24%
33
flagCanada
25%
37%
12%
25%
16
flagthe Philippines
21%
25%
6%
43%
32