Icyuma cya karuboni ni icyuma gifite ubunini bwa karuboni kuva kuri 0.05 kugeza kuri 2.1 ku ijana ukurikije uburemere.
Icyuma cyoroshye (icyuma kirimo igice gito cya karuboni, gikomeye kandi gikomeye ariko kidakonjeshwa cyane), kizwi kandi nka icyuma gisanzwe cya karuboni n'icyuma gito cya karuboni, ubu ni cyo cyuma gikunze gukoreshwa cyane kuko igiciro cyacyo kiri hasi mu gihe gitanga imiterere y'ibikoresho byemewe gukoreshwa mu buryo bwinshi. Icyuma cyoroshye kirimo karuboni iri hagati ya 0.05–0.30%. Icyuma cyoroshye gifite imbaraga nke zo gukurura, ariko kirahendutse kandi cyoroshye gukora; ubukana bw'ubuso bushobora kwiyongera binyuze mu gukaraba.
Nomero Isanzwe: GB/T 1591 Ibyuma bifite imbaraga nyinshi kandi bidafite aloyi nyinshi
| IMITERERE Y'UBUTARE % | IMITUNGO Y'UBUMENYI | |||||||
| C( %) | Si( %) (Ntarengwa) | Mn(%) | P( %) (Ntarengwa) | S( %) (Ntarengwa) | YS (Mpa) (Iminota) | TS (Mpa) | EL( %) (Iminota) | |
| Q195 | 0.06-0.12 | 0.30 | 0.25-0.50 | 0.045 | 0.045 | 195 | 315-390 | 33 |
| Q235B | 0.12-0.20 | 0.30 | 0.3-0.7 | 0.045 | 0.045 | 235 | 375-460 | 26 |
| Q355B | (Ntarengwa) 0.24 | 0.55 | (Ntarengwa) 1.6 | 0.035 | 0.035 | 355 | 470-630 | 22 |
Igihe cyo kohereza: Mutarama-21-2022