上海北潤金屬材料有限公司——Q345DE角鋼
Shanghai Metal Materials Co., Ltd. North Run - Q345DE angle
Q345B/D/E角鋼俗稱角鐵、是兩邊互相垂直成角形的長條鋼材。有等邊角鋼和不等邊角鋼之分。等邊角鋼的 兩個邊寬相等。其規格以邊寬×邊寬×邊厚的毫米數表示。如“∠30×30×3”,即表示邊寬為30毫米、邊厚為3毫米的等邊角鋼。也可用型號表示,型號是邊寬的厘米數,如∠3#。型號不表示同一型號中不同邊厚的尺寸,因而在合同等單據上將角鋼的邊寬、邊厚尺寸填寫齊全,避免單獨用型號表示。熱軋等邊Q345B/D/E角鋼的規格為2#-20#。
Q345B/D/E commonly known as angle iron angle , perpendicular to each other on both sides into a triangular strip of steel . There equilateral angle and unequal angle of the points. Equilateral angle of the two sides are equal in width . Its specifications to edge width × width × edge thickness of a few millimeters . If "∠ 30 × 30 × 3", it means that edge width of 30 mm , edge thickness of 3 mm equilateral angle . Also available models that model is the number of centimeters wide edge , such as ∠ 3 #. Model does not represent the same model in different dimensions edge thickness , and thus the contract and other documents will angle the edge width, edge thickness dimension completely filled to avoid alone model representation . Hot equilateral Q345B/D/E angle specifications for the 2 # -20 # .
Q345B/D/E角鋼化學成分: 牌號D Si Mn PSV Nb Al Ti ≤0.20 ≤0.55 ≤1.70 ≤0.035 ≤0.035 0.02-0.15 0.015-0.060 ≥0.015 0.02-0.20 Q345C角鋼與其他型鋼區別: Q235-A 含碳C:0.14~0.22;錳Mn:0.30~0.65; Q235-B 含碳C:0.12~0.20;錳Mn:0.30~0.70; 應用於心部強度要求不高的的滲碳或氰化零件,如拉桿、連桿、吊鉤、螺栓、軸及焊接件等應該對溫度也有限制的! 特別是Q345E。零下幾十度。另外相對於老標準而言,新標準要求中最明顯的就是對鋼材中Mn含量做出了調整,由原來的1.0-1.60變為≤1.70,取消了≥1.0的最小值限定。隨著現代工業的發現,科技的不斷進步,各種微量元素在鋼板中的應用也更加廣泛,Mn含量不再是影響鋼材強度和機械性能的唯一因素。所以中華人民共和國國家質量監督檢驗檢疫總局和中國國家標準化管理委員會聯合發布實施的低合金高強度結構鋼標準,取消Mn含量區間的限定,只規定最大值。對於Q345鋼材的檢測,一方面是鋼材的元素含量是否達到國標要求,最重要的一方面是通過專業機構檢測鋼材的機械性能(屈服強度、拉伸試驗)是否達到標準。
Q345B/D/E angle Chemical composition : Grade D Si Mn PSV Nb Al Ti ≤ 0.20 ≤ 0.55 ≤ 1.70 ≤ 0.035 ≤ 0.035 0.02-0.15 0.015-0.060 ≥ 0.015 0.02-0.20 Q345C steel angle iron and other differences : Q235-A carbon C: 0.14 ~ 0.22; manganese Mn: 0.30 ~ 0.65; Q235-B carbon C: 0.12 ~ 0.20; manganese Mn: 0.30 ~ 0.70; applied to less demanding core hardness carburizing or cyanide parts, such as rod , rods, hooks, bolts, shaft and the welded parts and other temperature should be limited ! Especially Q345E. Tens of degrees below zero . Also with respect to the old standard , the new standard requires the most obvious is the Mn content of the steel to make the adjustment from the original 1.0-1.60 becomes ≤ 1.70, ≥ 1.0 abolished the minimum limit . With the discovery of modern industry , science and technology progresses, various trace elements in steel application is more extensive , Mn content is no longer the impact strength and mechanical properties of steel the only factor . So Administration of Quality Supervision, Inspection and Quarantine and the Standardization Administration of China jointly issued the implementation of high-strength low-alloy structural steel standards, an Mn content range limited only provides maximum. For the detection of Q345 steel , steel hand is whether the GB element content requirement , the most important one is through professional testing agencies steel mechanical properties ( yield strength, tensile test ) is up to standard.