Cov hlau carbon yog cov hlau uas muaj cov pa roj carbon txij li ntawm 0.05 txog 2.1 feem pua ntawm qhov hnyav.
Cov hlau tsis hnyav (hlau muaj feem pua me me ntawm cov pa roj carbon, muaj zog thiab tawv tab sis tsis yooj yim tempered), tseem hu ua cov hlau carbon dawb thiab cov hlau carbon tsawg, tam sim no yog hom hlau feem ntau vim tias nws tus nqi qis dua thaum nws muab cov khoom siv uas siv tau rau ntau daim ntawv thov. Cov hlau tsis hnyav muaj kwv yees li 0.05–0.30% carbon. Cov hlau tsis hnyav muaj lub zog tensile qis, tab sis nws pheej yig thiab yooj yim rau kev tsim; qhov nyuaj ntawm qhov chaw tuaj yeem nce ntxiv los ntawm kev carburizing.
Tus Qauv Tsis Muaj: GB/T 1591 Lub zog siab tsawg alloy cov hlau ua vaj tse
| TSHUAJ HMOO % | COV KHOOM SIV TXUJ CI | |||||||
| C(%) | Si(%) (Qhov siab tshaj plaws) | Mn (%) | P(%) (Qhov siab tshaj plaws) | S (%) (Qhov siab tshaj plaws) | YS (Mpa) (Yam tsawg kawg nkaus) | TS (Mpa) | EL (%) (Yam tsawg kawg nkaus) | |
| 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 | (Tshaj plaws) 0.24 | 0.55 | (Tshaj plaws) 1.6 | 0.035 | 0.035 | 355 | 470-630 | 22 |
Lub sijhawm tshaj tawm: Lub Ib Hlis-21-2022