3a21鋁合金等於什麼型號

1. 鋁板LF21-M與LF21的區別

「LF21」是鋁合金的一種老牌號，新的牌號為「3A21」 是鋁合金的材質,「M」是此合金的一種狀態，為退火狀態，也是以前的狀態代號，現在為「O態」，也就是軟態！

"LF21-M"對應現在的牌號為「3A21-O"，為鋁錳合金3A21 O態！是應用最廣的一種防銹鋁，在

退火狀態有很高的塑性，耐腐蝕好，焊接性良好。用途主要用於要求高的可塑性和良好的焊接性，在液體或氣體介質中工作的低載荷零件，如油箱，汽油或潤滑油導管，如廚具、食物和化工產品處理與貯存裝置，運輸液體產品的槽、罐，以薄板加工的各種壓力容器與管道一般器物、散熱片、化妝板、影印機滾筒、船舶用材。

希望能對你的疑問有幫助！

2. GB/T 3190-2008標准中的3A21鋁合金對應的國際牌號是

Vehicle Performance test system configuration and the diversity of the normative

Distributed networked control system. 3.3 System Performance System Performance Automotive comprehensive performance test that reflects the effect of output indicators, including the proction of quantitative indicators - detection efficiency and quality indicators - both the content level of service. 3-3.1 detection efficiency. Detection system detection efficiency is reflected in the number of vehicles detected per unit time index, available on the number of vehicles seized, the number of annual inspection of vehicles, the effective annual number of vehicles and other indicators to represent. 3.3.2 services. Inspection station's output is essentially a service level of service reflects the detection system to detect the depth and breadth of the vehicle, the test results with the real situation close to the level of the index. 4 Conclusion According to incomplete statistics,mbt footwear, as of the late 90s, has been built around the country comprehensive performance vehicle inspection station 1500 (of which A-Station 338, B-class station 827, C-class station 335), a rational capacity \Communications Standardization \approach, in order to achieve the real effect of external relations. Key words: concrete; appearance quality; common problem; control CLC: U443.17 Document code: B Article ID :1002-4786 (2004) 08-0036- - yunHenanRoad-, Shangqiu476000, China) Abstract: emea. suresofpreventionandcure. Keywords: concrete; exteriorquality; generaldisease; preventionandcure quality of concrete structures, including internal quality and appearance quality. Modern construction technology and management structure for the intrinsic quality of easy assurance, but the quality of the appearance of structures there is always this or that defect, the light can not be rated as excellent works, causing heavy scrap, in the economic, credit, causing significant losses. Therefore,tory burch shoes, the structure must attach great importance to visual quality, especially for large-scale bridges and overpasses and other cities, the appearance size and quality of utmost importance. ,> 7,> 7,> 7,> 7,> 7,> 70: ->, 0 :->,ralph lauren uk,,> 7 a,http://www.wholesale-maccosmetics.org, the appearance of quality defects of concrete quality problems, including the appearance of concrete cellular, Ma surface, fracture, color, smoothness bad, cold joint aspects. (A) of the cellular concrete structures there, Pock 1. Causes ① concrete segregation. ② stone size larger. ⑧ vibration e to vibration or leakage. ④ poured concrete layer thickness does not meet the requirements. Support, management and orderly,mbt shoes discount, convenient and comprehensive performance testing of automotive network has been formed, the state of technology for the protection of the vehicle completely, the quality supervision and inspection of vehicle maintenance, improve road transport capacity to provide strong technical support and protection. Comprehensive performance test in China's automobile instry development, the test standards and regulations have been established and improved, standardized testing system from the general trend is increasing, but on the other hand, Vehicle Performance Test System Configuration 2. ① Select level solution with the thickness of cell aggregate, maximum aggregate size must meet the minimum bar spacing requirements. ② rate adjustment sand and concrete slump, meet workability requirements. ⑧ concrete vibrator vibration can not leak e to vibration, can not be too vibration. Tap the eligibility criteria for the concrete is no longer sinking, no bubbles can be. ④ concrete to meet the requirements of the mixing time and casting methods, when the infusion there was a high degree of convergence of ≥ 2m, the problem of inadequate personality, test system configuration from the testing requirements is more serious. Solution to this problem is, we must first full analysis of test demand, to meet the testing standards and testing requirements based on the purpose of testing the system structure and configuration to achieve the normative and unity in diversity, which is the rational allocation of inspection resources and improve the effectiveness of detection systems and means of the inevitable requirement. Received date :2004-04-12j \ More articles related to topics：

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3. 3A21鋁合金跟LF21有什麼區別

沒有區別，3A21是新牌號，LF21是老牌號，是同一種材質。
LF21鋁合金(新牌號3A21)為AL-Mn系合金，是應用最廣的一種防銹鋁，這種合金的強度不高（稍高於工業純鋁），不能熱處理強化，故採用冷加工方法來提高它的力學性能：在退火狀態有很高的塑性，在半冷作硬化時塑性尚好，冷作硬化時塑性低，耐腐蝕好，焊接性良好，可切削性能不良。用途主要用於要求高的可塑性和良好的焊接性，在液體或氣體介質中工作的低載荷零件，如郵箱，汽油或潤滑油導管，各種液體容器和其他用深拉製作的小負荷零件：線材用來做鉚釘,廣泛用於廚具、食物及化工產品處理與貯存裝置、運輸液體產品的槽、罐、以薄板加工的各種壓力容器與管道、熱交換器、鉚釘、焊絲、洗衣機缸體等。

4. LF21是什麼鋁合金

L是鋁的拼音字母第一個
F是防銹的拼音字母第一個
21代表21號防銹鋁
LF21國內新牌號是3A21，對應美國牌號3003
LF21是一種鋁合金，LF21鋁合金為AL-Mn系合金，是應用最廣的一種防銹鋁。
標准：GB/T3190
化學成分：
硅Si：0.60
鐵Fe: 0.70
銅Cu：0.20
錳Mn：1.0-1.6
鎂Mg：0.05
鋅Zn：0.15
鈦Ti：0.10-0.20
鋁Al：餘量
力學性能：
抗拉強度 σb (MPa) ) 120-160
條件屈服強度 σ0.2 (MPa) )≥85