A572Gr65 yog ib hom kev muaj zog siab, qis-alloy structural steel, teev los ntawm Asmeskas tus qauv ASTM A572/A572M-15. Cov hlau no tau lees paub dav dav rau nws cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab thiab siv dav hauv cov txuas hniav, cov tsev, cov hlab ntsha siab thiab lwm yam.
Cov tshuaj muaj pes tsawg leeg ntawm A572Gr65 feem ntau suav nrog carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S) thiab txhuas (Al). Cov ntsiab lus no ua lub luag haujlwm tseem ceeb hauv cov tshuaj muaj pes tsawg leeg ntawm A572Gr65 steel. Cov pa roj carbon monoxide yog lub ntsiab ntawm cov hlau thiab ua rau nws lub zog thiab hardness. Silicon thiab manganese nce lub zog thiab hardness ntawm cov hlau thiab txhim kho nws cov tsis kam hnav thiab corrosion. Phosphorus thiab sulfur nce hardness ntawm hlau, tab sis nyob rau hauv ntau dhau lawv txo nws cov toughness. Aluminium tsub kom qhov tsis kam ntawm steel rau oxidation thiab corrosion.
Cov khoom siv kho tshuab ntawm A572Gr65 feem ntau xa mus rau lub zog, plasticity thiab toughness. Hais txog lub zog, lub zog tawm los (σ0,2) ntawm A572Gr65 feem ntau yog 60.000 txog 80.000 PSI, thiab lub zog tensile (σb) feem ntau yog 80. 000 rau 100.000 PSI. Nyob rau hauv cov nqe lus ntawm plasticity thiab toughness, lub elongation (δ) ntawm A572Gr65 feem ntau yog 19% mus rau 22%, thiab qhov cuam tshuam toughness (Charpy V-Notch) feem ntau yog 22 ksi rau 35 ksi. Tsis tas li ntawd, A572Gr65 muaj machinability zoo thiab weldability.
Vim nws cov khoom siv zoo heev thiab kev ua haujlwm zoo, A572Gr65 yog dav siv hauv choj, kev tsim kho, cov hlab ntsha siab thiab lwm yam haujlwm. Hauv cov choj, A572Gr65 feem ntau yog siv los ua steel choj thav ntawv, txhawb nqa kab thiab cov kab tseem ceeb rau cov txuas txuas txuas. Hauv kev tsim kho, A572Gr65 feem ntau yog siv rau kev tsim cov khoom txhawb nqa, ncej kab teeb thiab pem teb slabs ntawm cov tsev siab. Hauv cov hlab ntsha siab, A572Gr65 feem ntau yog siv hauv kev tsim cov hlab ntsha siab thiab lawv cov khoom siv, xws li cov tso tsheb hlau luam, boilers thiab cov kav dej siab.
