Etsch Hlau 9smnpb28 Sib Tsoo Qws Chaw Sib Tsoo Sib Tsoo Sib Tsoo Qhov Loj Hlob

Qib: 9smnpb28 Dawb Txiav Hlau

Cov Txheej Txheem Khoom: Sib tsoo, Txias Kos Duab

Cov Khoom Lag Luam: Round pas nrig, hexagonal pas nrig, square pas, square pas, cov khoom siv puab

9SMNPB28 Dawb Txiav Hlau Rau Kev Siv

Feem ntau siv nyob rau hauv kev tsim cov tshuab tseem ceeb, cov khoom siv, cov pob txha, cov pob qij txha, cov khoom lag luam thiab tshuab cuab tam.

Tshuaj Muaj Tshuaj

Cov pa roj carbon C: 0.10

Manganese MN: 0.80 ~ 1.20

Sulphur S: 0.23 ~ 0.33

Lead PB: 0.15 ~ 0.35

Cov Cuab Yeej Cuab Yeej Cuab Yeej

Lub zog tensile σB (MPA):

(kub dov) 390 ~ 540;

(txias txav) steel φ8 ~ 20: 530 ~ 755;

Elongation Δ5 (%): (kub dov) ≥22;

Hardness: (Kub Rolling) ≤170HB;

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