Cold birgima takardar, duk da aka sani da talakawa carbon tsarin karfe sanyi birgima takardar, kuma aka sani da sanyi birgima takardar ko sanyi farantin, shi ne talakawa carbon tsarin karfe zafi birgima karfe tsiri bayan kara sanyi mirgina sanya da karfe farantin da kauri na kasa da 4mm.

Cold birgima karfe takardar samfur ne da aka yi daga zafi birgima karfe coils birgima a dakin zafin jiki kasa da recrystallisation zazzabi.

Cold birgima karfe DC01 wani nau'i ne na sanyi birgima karfe farantin, wanda nasa ne na Turai misali karfe, daidai da China Q195 karfe da Q215 karfe.

Cold Rolled DC02 wani nau'in farantin karfe ne mai sanyi, wanda ke cikin nau'ikan samfuran sanyi ne guda ɗaya.

SPCC-SD yana nuna daidaitaccen zafin jiki, gamawar da ba mai sheki ba, farantin karfen carbon mai sanyi da tsiri don amfanin gabaɗaya, kayan lilin mai sheki ɗaya, tare da taurin Vickers (HV) tsakanin 85 da 110.

Ma'aunin ƙarfe na ƙasa na ƙasar Sin Q195 yana wakiltar ma'anar "ƙarfin amfanin ƙasa σs = 195MPa", wanda aka auna da ƙimar gwaji na karfe 16mm. Idan diamita shine karfe 16 ~ 40mm, iyakar yawan amfanin ƙasa shine 185MPa, dokokin suna na Amurka ASTM sun karɓi wannan. 195MPA. Ƙarfin Haɓaka 195MPA. ƙananan ƙarfi fiye da Q235. Farashin ya fi arha. Ana amfani da shi wajen gini, tsari, firam ɗin babur, da sauransu.

ST12 shine ma'aunin Jamusanci (DIN1623), wanda yayi daidai da DC01 na EN10130, SPCC na JIS, ASTM A1008 CS na Standard American, da Q/BQB 403 DC01 na Baosteel Enterprise Standard.