In China, for the selection of color coated steel plate, users are relatively less concerned about steel grades. Because most of the domestic color coated steel plate production There are few kinds of steel in the plant, most of which are dc51 (because the hot rolled plate or hard rolled coil they purchased is basically a steel type). Some color coated steel plants with hot-dip galvanizing production line produce all hard steel (S550) or high-strength steel (S350, etc.) through hot-dip galvanizing annealing, but it is very difficult because they have no control over the quality and chemical composition of the substrate. Therefore, the quality stability is poor, which leads to large fluctuation of performance, resulting in poor pressure plate.

对建筑物来说，承载重量（风载荷、雪载荷、施工人员和机械）、建筑物的跨度、檩距的设计等都依赖于钢板的强度，对于建筑维护结构用彩涂和镀铝锌板来说，国外均有相应的标准。如美国的ASTM653、ASTM792，日本的JISG3302、JISG3321，欧州的EN10215、EN10147等。按钢种大类分成CQ（普通商用级）、DQ（一般冲压用）、HSS（高强结构钢）、FH（全硬钢）。

For buildings, the bearing weight (wind load, snow load, construction personnel and machinery), the span of buildings, the design of purlin distance, etc. all depend on the strength of steel plates. For the color coated and aluminum zinc plated plates for building maintenance structures, there are corresponding standards abroad. For example, astm653 and astm792 in the United States, jisg3302 and jisg3321 in Japan, en10215 and en10147 in Europe, etc. It can be divided into CQ (general commercial grade), DQ (general stamping), HSS (high strength structural steel) and FH (all hard steel) according to the steel categories.

CQ普通商用级

CQ general commercial grade

有色金属冶炼厂（铜、锌、铝、铅等）是更挑战彩涂钢板使用年限的。但是合理的选择材料、设计、以及投入等能保证或提高彩涂钢板的使用寿命。10年进行更换或维护是应该能做到的。

Nonferrous metal smelters (copper, zinc, aluminum, lead, etc.) are the most challenging for the service life of color coated steel plates. However, reasonable selection of materials, design and environmental protection investment can ensure or improve the service life of color coated steel plate. 10 years of replacement or maintenance should be possible.

DQ一般冲压用

DQ for general stamping

由于一般建筑用彩板均是辊压成型或复合夹芯，对材料的冲压性能要求不高，因此很少在建筑领域使用（部分门窗类彩板除外）。

Generally, the color plates used in construction are roll forming or composite sandwich, so the stamping performance of materials is not high, so they are rarely used in the construction field (except for some door and window color plates).

HSS高强结构钢

HSS high strength structural steel

按欧标HSS可分成4-5种不同强度的钢种，但由于普通CQ级材料已经能够取代低强度的HSS钢，因此，市场上用得较多的是屈服强度280Mpa和345Mpa的钢种，宝钢所生产的TSTE28和TS350GD就是这两个钢种。

According to the European standard, HSS can be divided into 4-5 kinds of steel with different strength. However, because the common CQ grade material has been able to replace the low strength HSS steel, the steel with yield strength of 280mpa and 345mpa is widely used in the market. Tste28 and ts350gd produced by Baosteel are the two kinds of steel.

与普通CQ相比，HSS钢有几大优势：（1）由于屈强比较低因此该钢种的耐火及抗震性好。（2）对较厚的钢板，它可以制造大跨度拱型板。（3）对一般的外墙和屋面板型，它可以比CQ材料适当减薄，从而可节约材料消耗。

Compared with common CQ, HSS steel has several advantages: (1) because of its low yield strength, it has good fire resistance and seismic resistance. (2) For thicker steel plates, it can be used to make large-span arch plates. (3) For general exterior wall and roof panel type, it can be properly thinner than CQ material, thus saving material consumption.

是通过控制退火温度来提高钢板屈服强度的一类钢种，按通用标准，屈服强度≥550Mpa,抗拉强度≥570Mpa。这类材料强度高，延伸率低，适用于板型较浅的成型钢板，使用时能够大大节约材料。因此，各国争先研究开发的这种钢种。在国外标准中，对强度高又要求延伸率好的材料也有描述。例如，采用HSLA（低合金高强度）在炼钢时加入强化合金元素，但由于强度高在钢铁厂进行轧制时加大压下率就有限制，因此作为维护结构的较薄的彩涂板很少采用HSLA钢种（另一缺点是成本高）。

It is a kind of steel that improves the yield strength of steel plate by controlling annealing temperature. According to the international general standard, the yield strength is ≥ 550MPa, and the tensile strength is ≥ 570Mpa. This kind of material has high strength and low elongation, which is suitable for forming steel plate with shallow plate shape, and can greatly save materials when used. Therefore, countries are competing for the first research and development of this kind of steel. In foreign standards, materials with high strength and good elongation are also described. For example, HSLA (low alloy and high strength) is used to add strengthening alloy elements in steel-making. However, due to the high strength and the limitation of increasing reduction rate when rolling in iron and steel works, HSLA steel is rarely used as thin color coated plate for maintenance structure (another disadvantage is high cost).

根据宝钢多年的钢种使用经验，彩涂钢板更终产品板型的保证，与钢板的强度等级、压型钢板的板型以及加工机器等密切相关。

According to Baosteel's many years of experience in using steel grades, the guarantee of the final product shape of color coated steel plates is closely related to the strength grade of steel plates, the shape of profiled steel plates and processing machines.

总的来说，加工道次越多，板型越好，加工速度越慢、板型越好。对压型钢板板型来说，浅波板的板型优于高波板。对钢板强度来说，强度加工后的板型变差的趋势越明显。高强钢的板型相对较差还有另外一个原因就是很多彩涂生产厂仅靠降低热镀锌的退火温度来提高材料的屈服强度，这样就会导致钢板宽度方向上力学性能的不均衡。这种不均衡是由整个宽度方向带钢温度的不均匀引起的，温度下降可能导致部分部位温度低于钢板再结晶的退火温度。

Generally speaking, the more processing passes, the better the shape of the board, the slower the processing speed and the better the shape of the board. For profiled steel plate, the shape of shallow wave plate is better than that of high wave plate. For the strength of steel plate, the trend of shape deterioration after strength processing is more obvious. Another reason for the relatively poor shape of high-strength steel is that many color coating plants only rely on reducing the annealing temperature of hot-dip galvanizing to improve the yield strength of materials, which will lead to the imbalance of mechanical properties in the width direction of steel plate. This imbalance is caused by the uneven temperature of the strip in the whole width direction. The temperature drop may cause the temperature of some parts to be lower than the annealing temperature of the recrystallization of the steel plate.

有了济南彩钢板上面的小总结，希望对广大客户有所帮助，如果有什么不理解的或者寻求帮助的请点击我们的网站：http://www.jnjgcg.com 或者来电咨询，我们会尽全力为您解决

With the summary on Jinan color steel plate, I hope it can help our customers. If you don't understand or ask for help, please click our website: http://www.jnjgcg.com  Or call for consultation, we will do our best to solve it for you