What are the standards and calculation methods for colored stainless steel plates?

Colored stainless steel plates are used more and more widely due to their uniqueness. Nowadays, many foreign countries and regions use a large number of colored stainless steel products for decoration on buildings, which is all the rage.
Colored stainless steel not only has the unique luster and strength of metal, but also has colorful and durable colors. It not only maintains the physical, chemical and mechanical properties of primary color stainless steel, but also has stronger corrosion resistance than primary color stainless steel. Therefore, since its advent in the 1970s, it has been widely used in fields such as building materials, chemical industry, automobiles, electronics industry, and arts and crafts.
The national standard for colored stainless steel plates includes the following six standards:
GB/T20878-2007 “Colored stainless steel plates and heat-resistant steel grades and chemical compositions”
GB/T1220-2007 “Colored Stainless Steel Plate and Rod”
GB/T1221-2007 “Heat-resistant steel rods”
GB/T3280-2007 “Colored stainless steel plates, cold-rolled steel plates and steel strips”
GB/T4237-2007 “Colored stainless steel plates, hot-rolled steel plates and steel strips”
GB/T4238-2007 “Heat-resistant steel plates and strips”
The corrosion resistance of colored stainless steel plates depends on the alloy elements contained in the stainless steel sheet metal stamping parts. Chromium is the basic element that makes colored stainless steel plates corrosion resistant. When the chromium content in the steel reaches about 12%, chromium interacts with the oxygen in the corrosive medium to form a thin oxide film (self-passivation) on the surface of the steel. film), which can prevent further corrosion of the steel matrix. In addition to chromium, commonly used alloy elements include nickel, molybdenum, titanium, niobium, copper, nitrogen, etc. to meet the requirements for the structure and performance of colored stainless steel plates for various purposes.
Colored stainless steel plates are usually divided into matrix structures:

① Ferritic colored stainless steel plates. Contains 12% to 30% chromium. Its corrosion resistance, toughness and weldability increase with the increase of chromium content, and its chloride stress corrosion resistance is better than other types of colored stainless steel plates.

②Austenitic colored stainless steel plate. It contains more than 18% chromium, and also contains about 8% nickel and a small amount of molybdenum, titanium alloy internal fixation plate for medical equipment, nitrogen and other elements. It has good comprehensive performance and can withstand corrosion from various media.

③Austenitic-ferritic duplex colored stainless steel plate. It has the advantages of austenitic and ferritic colored stainless steel plates and has super plasticity.

④Martensitic colored stainless steel plate. High strength, but poor plasticity and weldability.
Density of colored stainless steel plates:
Density of “400” series: 7.75, 304, 321, 304L, 202, 201 density 7.93, 310s, 309s, 316L, 316 density 7.98
Classification of colored stainless steel plates:
1. Classification by process: A. Electroplating B. Water plating C. Fluorocarbon paint D. Spray painting
2. Classified by surface effect: mirror (8K), hairline (LH), snowflake sand (NO4), and grain (random grain), sandblasting 1. Colored stainless steel mirror panel
3. Classification by color: titanium black (black titanium), sky blue, custom titanium alloy electric bike folder parts via slm, brown, brown, purple red, bronze, rose gold, titanium white, emerald green, green, champagne gold, bronze
Colored stainless steel plate price calculation:
Colored stainless steel plate price = thickness (mm) X width (m) X length (m) X density X price (yuan/kg) + (processing fee)