A105, ihe a nwere carbon, manganese, phosphorus, sọlfọ, silybel, komomium, molybum na vanadium na ihe mejupụtara ya. Ebe ọ bụ na ihe ndị ọzọ erughị 1% nke ihe mejupụtara, a na-akpọ ndị a ka carbon steels.
Ngalaba ígwè carbon carbon na-enyere aka na akwa igwe anaghị agba nchara, na-eri nri, valves, na-akpọ oku, na ndị ọzọ na-ekpo ọkụ.