彩钢板的常用钢种、基板、镀层
在我国，对于彩涂钢板的选择，用户对钢材牌号的关注相对较少。由于目前国内生产的彩涂钢板大多品种不多，大多为dc51（因为所采购的热轧板或硬卷基本上是同一钢种）。一些有热镀锌生产线的彩涂钢厂可以通过热镀锌退火生产全硬钢（S550）或高强度钢（S350等），但由于无法控制基体的质量和化学成分，难度很大。因此，质量稳定性差，造成性能波动大，造成压型不良。
彩涂钢板的选择对于建筑物，其承载力（风荷载、雪荷载、施工人员和机械设备）、建筑跨度、檩条间距等的设计都取决于钢板的强度。对于建筑维修结构用彩涂铝锌板，国外有相应的标准。如美国的astm653和astm792，日本的jisg3302和jisg3321，欧洲的en10215和en10147。按钢种分为CQ（一般商业级）、DQ（普通冲压）、HSS（高强度结构钢）和FH（全硬钢）。
CQ一般商业级有色金属冶炼厂（铜、锌、铝、铅等）是彩涂钢板使用寿命具挑战性的品种。而合理的选材、设计和环保投资，可以保证或提高彩涂钢板的使用寿命。可进行10年的更换或维护。
DQ通常用于冲压。由于一般建筑中使用的彩钢板为辊弯成型或复合夹芯，对材料冲压性能要求不高，在建筑领域很少使用（除了一些门窗用彩钢板）。
彩涂钢板的选择根据欧洲标准HSS可分为4-5种不同强度的钢种。然而，普通的CQ级材料已经能够代替低强度HSS钢。因此，屈服强度为280mpa和345mpa的钢种在市场上更为常用。宝钢生产的Tste28和ts350gd就是这两种钢。
与普通CQ钢相比，HSS钢具有以下优点：（1）屈服强度比低，具有良好的耐火和抗震性能。（2）
对于厚钢板，可用于制造大跨度拱板。（3） 对于一般外墙和屋面板类型，可比CQ材料薄，以节省材料消耗。
In China, for the selection of color coated steel plate, the steel grade is relatively less concerned by users. 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 coil they purchased is basically the same steel grade). Some color coated steel plants with hot-dip galvanizing production line can produce all hard steel (S550) or high-strength
steel (S350, etc.) by hot-dip galvanizing and annealing, but it is very difficult because they can't control the quality and chemical composition of the substrate. Therefore, the quality stability is poor, resulting in large fluctuations in performance,
resulting in poor profiled sheet.
For buildings, the design of bearing capacity (wind load, snow load, construction personnel and machinery), building span, purlin distance, etc. all depend on the strength of steel plate. For color coated and aluminized
zinc plate for building maintenance structure, there are corresponding standards abroad. Such as astm653 and astm792 in the United States, jisg3302 and jisg3321 in Japan, en10215 and en10147 in Europe. It is divided into CQ (general commercial grade),
DQ (general stamping), HSS (high strength structural steel) and FH (full hard steel) according to steel types.
CQ general commercial grade nonferrous metal smelter (copper, zinc, aluminum, lead, etc.) is the most challenging color coated steel plate
service life. 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 is generally
used for stamping. Because the color plates used in general buildings are roller formed or composite sandwich, and the requirements for the stamping performance of materials are not high, it is rarely used in the construction field (except for some color
plates for doors and windows).
According to the European standard HSS can be divided into 4-5 different strength steel grades. However, the common CQ grade materials have been able to replace the low strength HSS steel. Therefore, the steel grades
with yield strength of 280mpa and 345mpa are more commonly used in the market. Tste28 and ts350gd produced by Baosteel are these two kinds of steel.
Compared with common CQ steel, HSS steel has several advantages: (1) due to its low yield strength
ratio, it has good fire resistance and seismic resistance. (2) For thick steel plate, it can be used to manufacture large span arch plate. (3) For general exterior wall and roof panel type, it can be thinner than CQ material, so as to save material consumption.
