Birta kaarboonku waa bir ka kooban kaarboon qiyaas ahaan 0.05 ilaa 2.1 boqolkiiba miisaan ahaan.
Birta khafiifka ah (birta ka kooban boqolkiiba yar ee kaarboon, xoog leh oo adag laakiin aan si sahal ah u xanaaqin), sidoo kale loo yaqaan birta-carbon-ka-baxsan iyo birta-kaarboon-yar, hadda waa qaabka ugu badan ee birta sababtoo ah qiimihiisu waa mid hooseeya inta ay bixiso sifooyinka alaabta ee la aqbali karo codsiyo badan. Birta khafiifka ah waxay ka kooban tahay qiyaastii 0.05-0.30% kaarboon. Birta qafiifka ahi waxay leedahay awood cufan oo aad u yar, laakiin way jaban tahay wayna fududahay in la sameeyo; adkaanta dusha sare waxaa lagu kordhin karaa carburization.
Heerka Maya
| QAABKA Kiimikada % | HANTIDA MAKAANIGA AH | |||||||
| C (%) | Si(%) (Max) | Mn(%) | P(%) (Max) | S (%) (Max) | YS (Mpa) (min) | TS (Mpa) | EL(%) (min) | |
| 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 | (Max)0.24 | 0.55 | (Max) 1.6 | 0.035 | 0.035 | 355 | 470-630 | 22 |
Waqtiga boostada: Jan-21-2022