We all know that the mechanical properties of reinforcing bars are tested by experiments. The mechanical properties of reinforcing bars are measured by yield point, tensile strength, elongation and cold bending properties. Next let's look at the specifications.

　　屈從點(diǎn)(fy)：當(dāng)鋼筋的應(yīng)力超越屈從點(diǎn)以后，拉力不增加而變形卻顯著增加，將產(chǎn)生較大的剩余變形時(shí)，以這時(shí)的拉力值除以鋼筋的截面積所得到的鋼筋單位面積所承當(dāng)?shù)睦χ担褪乔鼜狞c(diǎn)σs°

　　Following point (fy): When the stress of steel bar exceeds the yield point, the tensile force does not increase, but the deformation increases significantly. When there will be a large residual deformation, the tensile force per unit area of steel bar obtained by dividing the tensile force value by the cross-sectional area of steel bar at this time is the yield point s degree.

　　抗拉強(qiáng)度(fu)：抗拉強(qiáng)度就是以鋼筋被拉斷前所能承當(dāng)?shù)拇罄χ党凿摻罱孛娣e所得的拉力值，抗拉強(qiáng)度又稱為極限強(qiáng)度。它是應(yīng)力一應(yīng)變曲線中大的應(yīng)力值，固然在強(qiáng)度計(jì)算中沒(méi)有直接意義，但卻是鋼筋機(jī)械性能中必不可少的保證項(xiàng)目。由于:

　　Tensile strength (fu): Tensile strength is defined as the ultimate strength, which divides the maximum tensile force that the steel bar can bear before it is broken by the section area of the steel bar. It is the largest stress value in the stress-strain curve. Although it has no direct significance in strength calculation, it is an indispensable guarantee item in the mechanical properties of reinforcing bars. Because:

　　(1)抗拉強(qiáng)度是鋼筋在接受靜力荷載的極限才能，能夠表示鋼筋在到達(dá)屈從點(diǎn)以后還有幾強(qiáng)度儲(chǔ)藏，是抵御塑性毀壞的重要指標(biāo)。

　　(1) Tensile strength is the ultimate ability of steel bars to accept static loads. It can indicate how much strength of steel bars is stored after reaching the yield point. It is an important index to resist plastic damage.

　　(2)鋼筋有熔煉、軋制過(guò)程中的缺陷，以及鋼筋的化學(xué)成分含量的不穩(wěn)定，常常反映到抗拉強(qiáng)度上，當(dāng)含碳量過(guò)高，軋制終止時(shí)溫渡過(guò)低，抗拉強(qiáng)度就可能很高;當(dāng)含碳量少，鋼中非金屬夾雜物過(guò)多時(shí)，抗拉強(qiáng)度就較低。

　　(2) Defects in steel bars during smelting and rolling, and the instability of chemical composition content of steel bars are often reflected in the tensile strength. When the carbon content is too high and the temperature at the end of rolling is too low, the tensile strength may be very high; when the carbon content is too low and there are too many non-metallic inclusions in steel, the tensile strength will be low.

　　經(jīng)過(guò)以上的學(xué)習(xí)你對(duì)鋼筋機(jī)械性能是不是有了很深的理解，假如您有濟(jì)南鋼筋批發(fā)的需求能夠點(diǎn)擊我們的官網(wǎng)停止咨詢：http://m.iheartcartagena.com/

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