Correct

钢材

/ gāngcái / 
Strokes

Definition

steel (as raw material)/steel sheets, bars, tubes, ingots, wire etc

Example

As a Noun

steel products; steels

1
Gāngcái
钢材
màoyì
贸易

steel trade

2
Shēngchǎn
生产
gāngcái
钢材

produce steel