Birta kaarboonku waa bir leh kaarboon laga bilaabo qiyaastii 0.05 ilaa 2.1 boqolkiiba miisaan ahaan.
Bir khafiif ah (birta oo ka kooban boqolkiiba yar oo kaarboon ah, xoog badan oo adag laakiin aan si fudud loo kululayn), oo sidoo kale loo yaqaan birta kaarboon-caddaan ah iyo birta kaarboon-caddaan yar, hadda waa qaabka ugu badan ee birta sababtoo ah qiimaheedu waa mid hooseeya halka uu bixiyo sifooyin agab ah oo la aqbali karo codsiyo badan. Bir khafiif ah waxay ka kooban tahay qiyaastii 0.05–0.30% kaarboon. Bir khafiif ah waxay leedahay xoog jilicsan oo hooseeya, laakiin waa raqiis waana fududahay in la sameeyo; adkaanta dusha sare waxaa lagu kordhin karaa iyadoo la isticmaalayo kaarboonayn.
Heerka Lambarka: GB/T 1591 Biraha qaab-dhismeedka ee xoogga sare leh ee daawaha hooseeya
| KIIMIKADA % | GURYAHA FARSAMADA | |||||||
| C(%) | Si(%) (Ugu badnaan) | Mn(%) | P(%) (Ugu badnaan) | S(%) (Ugu badnaan) | YS (Mpa) (Daqiiqad) | TS (Mpa) | EL(%) (Daqiiqad) | |
| 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 | (Ugu badnaan) 0.24 | 0.55 | (Ugu badnaan)1.6 | 0.035 | 0.035 | 355 | 470-630 | 22 |
Waqtiga boostada: Jan-21-2022