① Dangane da sigar data kasance a cikin yanayi

Tagulla na halitta;

Copper oxide;

Copper sulfide .

② Dangane da tsarin samarwa

Copper maida hankali - tama mai babban abun ciki na jan karfe da aka zaba kafin narkewa.

Danyen jan karfe --- samfurin jan karfe yana tattarawa bayan magani, tare da abun ciki na jan karfe na 95-98%.

Tagulla mai tsafta - jan ƙarfe mai ɗauke da fiye da 99% bayan gyaran wuta ko lantarki.Ana iya samun 99-99.9% tagulla mai tsabta ta hanyar narkewar wuta kuma ana iya samun ta ta hanyar lantarki.

③ Bisa ga babban abun ciki na gami

Brass - jan karfe zinc gami

Bronze – jan karfe tin alloy, da sauransu (sai dai zinc nickel, gami da sauran abubuwa ana kiransa tagulla)

Farar jan ƙarfe cobalt nickel gami

④ Bisa ga samfurin samfurin:

Copper bututu, jan karfe sanda, jan karfe waya, jan karfe farantin, jan karfe tsiri, jan karfe tsiri, jan karfe tsare, da dai sauransu