A105 waa lambarka caadiga ah ee ASTM-ka Mareykanka, A wuxuu u taagan yahay birta qaab dhismeedka kaarboon ee caadiga ah.
Magaca caadiga ah: foornada birta kaarboon ee qaybaha tuubooyinka.Sababtoo ah hal been abuur ah oo kaarboon ah ayaa lagu qeexay heerkan, A105 waa xitaa darajada birta kaarboon ee been-abuurka ah.A105 sidoo kale waa koodhka alaabta, kaas oo iska leh birta gaarka ah waana bir qabow oo la been abuuray.A105 waa bir kaarboon yar oo been abuur ah, oo la mid ah birta 20.Waxaa jira laba heer, mid waa ASTM A105/A105M oo kaarboon kaarboon ah oo loogu talagalay Qaybaha Tuubooyinka, midna waa heerka Shiinaha GB/T12228-2006 Shuruudaha Farsamo ee Foornooyinka Birta Kaarboon ee Ujeeddada Guud.
Halabuurka C: ≤ 0.35 Si: ≤ 0.35 Mn: 0.6-1.05 S: ≤ 0.050 P: ≤ 0.040, Cu ≤ 0.4 Ni ≤ 0.4 Mo ≤ 0.12 V ≤ 0.12 V ≤ 0.
Qalabka farsamaysan waxa ay u dhexeeyaan nambar 20 bir been abuur ah iyo 16Mn bir been abuur ah.
Hantida makaanikada (Mpa)
Xoogga xajinta: (σ b)≥485Mpa
Awood soo saarid (σ s)≥250Mpa
Kordhinta ka dib (δ) ≥22%
Dhimista aagga (ψ) ≥30%
Adag ≤ HB187
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Waqtiga boostada: Oct-10-2022