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An fi amfani da ASTM A514 azaman ƙarfe na tsari a cikin cranes da manyan injuna masu nauyi.
A514 wani nau'i ne na ƙarfe mai ƙarfi na musamman, wanda aka kashe da ƙarfe mai zafin jiki, tare da ƙarfin amfanin ƙasa na 100,000 psi (100 ksi ko kusan 700 MPa). Sunan alamar kasuwanci ArcelorMittal shine T-1. A514 da farko ana amfani da shi azaman tsarin ƙarfe don ginin gini. A517 wani abu ne mai alaƙa da ke da alaƙa da ake amfani da shi don samar da tasoshin matsi mai ƙarfi.
Wannan ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙungiyar ASTM International ne, ƙungiyoyin haɓaka ƙa'idodi na sa kai waɗanda ke tsara ƙa'idodin fasaha don kayayyaki, samfura, tsarin, da ayyuka.
A514
Ƙarfin yawan amfanin ƙasa na A514 alloys an ƙayyade aƙalla 100 ksi (689 MPa) don kauri har zuwa inci 2.5 (63.5 mm) farantin kauri, kuma aƙalla 110 ksi (758 MPa) ƙarfin ƙarfi na ƙarshe, tare da ƙayyadadden kewayon ƙarshe na 110-130 ksi (758-896 MPa). Faranti daga 2.5 zuwa 6.0 inci (63.5 zuwa 152.4 mm) lokacin farin ciki sun ƙayyadaddun ƙarfin 90 ksi (621 MPa) (sakamakon rabo) da 100-130 ksi (689-896 MPa) (na ƙarshe).
A517
A517 karfe yana da daidai ƙarfin yawan amfanin ƙasa, amma dan kadan mafi girma ƙayyadaddun ƙarfin ƙarshe na 115-135 ksi (793-931 MPa) don kauri har zuwa inci 2.5 (63.5 mm) da 105-135 ksi (724-931 MPa) don kauri 2.5 zuwa 6.0 inci (63.5 zuwa 152.4 mm).
Amfani
Ana amfani da ƙarfe na A514 inda ake buƙatar walda, mai iya aiki, ƙarfe mai ƙarfi sosai don adana nauyi ko saduwa da buƙatun ƙarfi na ƙarshe. Yawancin lokaci ana amfani da shi azaman ƙarfe na tsari a ginin gini, cranes, ko wasu manyan injuna masu tallafawa manyan lodi.
Bugu da kari, an kayyade karfen A514 ta ma'auni na soja (ETL 18-11) don amfani da su azaman kewayon harbin kananan makamai da faranti.
Kayan aikin injiniya don A514GrT gami karfe:
| Kauri (mm) | Ƙarfin Haɓaka (≥Mpa) | Ƙarfin ƙarfi (Mpa) | Tsawaitawa cikin ≥,% |
| 50mm ku | |||
| T≤65 | 690 | 760-895 | 18 |
| 65 | 620 | 690-895 | 16 |
Abubuwan sinadaran don A514GrT gami karfe (Binciken Heat Max%)
| Babban abubuwan sinadaran A514GrT | |||||||
| C | Si | Mn | P | S | B | Mo | V |
| 0.08-0.14 | 0.40-0.60 | 1.20-1.50 | 0.035 | 0.020 | 0.001-0.005 | 0.45-0.60 | 0.03-0.08 |
Bukatun Fasaha & Ƙarin Sabis:
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