Color coated Galvanized Cold rolled Steel coil

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GradeChemical composition %
No more thanNo more thanNo more thanNo more thanNo more thanNo less thanNo more thanNo more than
GradeMechanical propertiesplating  adhesion
yield strengthtensile strengthn 90r 90Elongation %Plating weight(g/m 2 )
MpaMpaNo less thanNo less thanNo less thanBending diameter
 (a=thickness of slab)
L 0 =80mm b=20mm
Normal   thickness  mm
≤ 0.7>0.7≤ 140/140>140/140~>175/175
DC51D+Z(St01Z,St02Z,St03 Z), DC51D+ZF---270~500------20220a1a2a
 Exposure Test :Salt Spray Test :
EnvironmentGIEnviroment GI Average CorrosionAL-ZN  Average Corrosion
Average corrosion
g/m2 /yμ  m/yg/m2/yum/yg/m2/yum/y
Tough Marine Climate1409.8tough Marine Climate1409.8162.2
Moderate Marine Climate181.3Modeerate Marine Climate 181.340.54
Industrial Climate201.4Industrial Climate201.44.20.57
Countryside Climate40.28Countryside Climate40.281.30.17
Plainness of hot dip galvanized substrate
A.2.1 For steel sheet with a specified minimum yield strength less than 260MPa, the maximum plainness tolerance should be in conformity with the stipulations of Table A1.
MPaNominal widthPlainness (mm) for the nominal thickness as shown below
Common precise PF.AHigh-level precision PF.B
For steel sheet and steel strip with a specified minimum yield strength not less than 260MPa but less than 360MPa,and the grades of DC51+Z/Z  DD51D+Z /S550GD+Z/ZF), the maximum plainness tolerance should be in conformity with the stipulations of Table A2.
Table A2
MPaNominal widthPlainness (mm) for the nominal thickness as shown below
Common precise PF.AHigh-level precision PF.B
Thickness tolerance for hot dip galvanized substrate
For steel sheet with a specified minimum yield strength less than 260MPa, the maximum thickness tolerance should be in conformity with the stipulations of Table A6.
Nominal thicknessThickness tolerance while the widths are showed as follows
Common precise PT.AHigh-level precision PT.B
For steel sheet and steel strip with a specified minimum yield strength not less than 260MPa but less than 360MPa, the thickness tolerance should be in conformity with the stipulations of Table A7. 
Nominal thicknessThickness tolerance while the widths are showed as follows
Common precise PT.AHigh-level precision PT.B
For steel sheet and steel strip with a specified minimum yield strength not less than 360MPa, but less than or equal to 420 MPa, the thickness tolerance should be in conformity with the stipulations of Table A8.
Nominal thicknessThickness tolerance while the widths are showed as follows
Common precise PT.AHigh-level precision PT.B
For steel sheet and steel strip with a specified minimum yield strength not less than 420MPa, but less than or equal to 900 MPa, the thickness tolerance should be in conformity with the stipulations of Table A9.
Nominal thicknessThickness tolerance while the widths are showed as follows
Common precise PT.AHigh-level precision PT.B
Width tolerance
Nominal widthWidth toleranceWidth tolerance of the hot-dip zinc, hot-dip alu-zinc coated alloy steel sheets should conform to relevant parameters designed by A12.
Common precise PW.AHigh-level precision PW.B

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Q:How to repair corten steel?
6010 and 6011 Electrodes for welding galvenized steel. Weathering steel, best-known under the trademark COR-TEN steel and sometimes written without the hyphen as Corten steel, is a group of steel alloys which were developed to obviate the need for painting, and form a stable rust-like appearance if exposed to the weather for several years. The corrosion-retarding effect of the protective layer is produced by the particular distribution and concentration of alloying elements in it. The layer protecting the surface develops and regenerates continuously when subjected to the influence of the weather. In other words, the steel is allowed to rust in order to form the 'protective' coating. For welding corten steel: 1A.W.S ClassificationE 7018 - 1AWS A 5 - 1 - 78 2IS classificationE 5424 JXIS 814 (Part I II)H 3BS classificationE 51.54 B 12 17HBs 639 - 1976
Q:Can you put steel strings on a nylon-string guitar?
It will permanently ruin the guitars neck. Acoustic guitars have an adjustable metal rod in them called a “Truss Rod” that allows the neck to withstand steel string tension. How about putting on high tension nylon strings ?
Q:Is steel lighter than iron?
Steel Lighter
Q:Stainless steel?????????
no an alloy essentiallly does not exibit its constituent properties if you want to add anymore the thing should be molten and hot and homogenous homogenous being the key word and no ss essentiallly mean that thing only
Q:The effect of sodium chloride on mild steel?
The mild steel contains a lot of Iron. The NaCl solution quickly attacks the iron content and forms rust. Over time, the solution may also cause what is called 'Chloride Cracking' of the steel. Pitting corrosion of stainless steel due to chlorides would certainly produce a rust-colored product. Passivation can be used to maintain a good corrosion resistant surface of stainless steel process vessel. There are many commercial products for this purpose. In the pharmaceutical industry, this process is often called derouging, that is to remove the buildup of iron oxides on the stainless steel process surfaces
Q:Does stainless steel cookware really cause cancer?
Hi, I think that Stainless Steel is one of the safest ways to cook food. Glassware is also safe, but you must be careful not to drop the stuff, it can break and leave small pieces on the floor. Yes non-stick cookware can harm small fast breathing animals like birds in your house if the cookware overheats, but by keeping water or moisture in the bottom of the pan, and not using supper high heat, you can avoid overheating a non-stick surface. This also includes not scraping the surface with the utensils. Aluminum cookware, especially cast aluminum is considered by many as more than average toxic to many. Test for alltimers is that they contain aluminum in their bodies, and many owned aluminum cookware too. To kill cancer, look to Dr. Otto Warburg, who did win a Noble Prize for discovering how to kill the cancer cells.
Q:The difference between aluminized color steel roll and ordinary color steel roll
Substrate selection: AZ150 (aluminum zinc content 150g/m2); G345A high strength galvanized steel sheet (55% aluminum, 43% zinc and 1.6% silicon) corrosion resistance data: 5%NaCL 35 DEG C, 1000Hrs, Field good, Scribe, No, Blister, 2mm belowQ.U.V: 2000hrs, MAX.2 color, light to keep the rate above 90%, the above data show that aluminum zinc coated board (AZ150, G345A, PVDF) is very suitable for the extreme environment of buildings or other facilities, highly corrosion resistance and weather resistance, and the major steel plate can ensure the service life of 20 years. In addition, high strength steel has been widely used abroad, and it has good economic performance, and it is also the domestic development trend.
Q:Fireproofing structural steel?
mix the fire retardant with cement, let it harden fast to superstructure. this will create better stability and will not be dislodged in case of impact.
Q:Different properties and uses of three types of steel?
TYPES OF STEEL: CARBON STEEL ============= Steels containing 0.2% C to 1.5% C are known as carbon steel. They are of three types. Low Carbon Steel It contains 0.2% carbon. Uses: Sheets, wires, pipes. Mild Carbon Steel It contains 0.3% to 0.7% carbon. Uses: Rails, boilers, plates, axles, structures. High Carbon Steel It contains 0.7% to 1.5% carbon. Uses: Surgical instruments, razor blades, cutlery, spring. STAINLESS STEEL =============== It contains 14% to 18% chromium and 7% to 9% nickel. Uses: Car accessories, watch case, utensils, cutlery. ALLOY STEEL ============= There are three types of alloy steel. Mn-Steel It contains 10%-18% Mn. Uses: Rail tracks, armor plate, safe. Si-Steel It contains 1% to 5% Si. Uses: Permanent magnet. Ni-Steel It contains 2% to 4% Ni. Uses: Machine components, Gear, shaft, cable. :) Ref.
Q:Is Steel a Pure Substance or a Mixture?
This Site Might Help You. RE: Is Steel a Pure Substance or a Mixture? No. Not Stainless steel, I mean STEEL. Not a specific type, but STEEL. Thanks. xo

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