鋳鉄

1. Origins, structure, and basic meaning

• Structure: 鋳鉄 (ちゅうてつ) is cast iron produced by casting iron. It appears as material and compound adjective 鋳鉄製.
• Basic usage: A heavy pot is made of thick cast iron; cast-iron components line a factory shelf.

2. Common pitfalls and similar expressions

• Material forming a pot and material category of parts
  • 鋳鉄で作られる gives material; 鋳鉄製の部品 classifies finished items. It is not all iron or steel.