Cov kev xav tau kev kuaj xyuas tsis haum?
Cov qauv tseem ceeb: UT (ultrasonic) Class I; Cov hlab ntsha siab: UT + MT / PT.
Kev sib raug zoo nrog 16Mn?
Q345=qub 16Mn (qib qub), tib yam muaj pes tsawg leeg / khoom, tsuas yog hloov kho tus qauv.
High -kev ua haujlwm kub?
Stable at long-term ≤**450℃**; strength decreases significantly >500 degree, tsis haum rau siab -kub siab siv.
Kev qaug zog?
Zoo, qaug zog txwv ≈170–200MPa, haum rau dynamic loads (bridges / cranes).
Hardness?
HB 150-180, qis dua quenched thiab tempered steel, yooj yim rau tshuab.