1.S stainless steel plate
Code: SUS, Stainless Steel
Common Codes:
- SUS304 (18-8 stainless steel, non-magnetic)
- SUS301 (stainless steel spring, slightly magnetic)
- SUS430 (magnetic, subject to rust)
Tensile strength: Above 53 kgf/mm².
Material thickness: Ranges from 0.1 to 10.0 mm. Materials thicker than 10.0 mm are difficult to obtain.
Material Width: The maximum width is 5 feet (1524 mm), but 4 feet (1219 mm or 1250 mm) is more commonly used. Any width less than 1524mm can be cut to size.
Material Length: Can be cut to any desired size. Typically 8 feet (2438 mm or 2500 mm).
Material properties:
- The metal has a white luster and is resistant to rust.
The surface can be divided into different finishes, such as matte, glossy, mirrored and drawn. PVC protective film is often applied to protect the surface.
- Generally, no surface treatment is required, but special paint treatment may be required.
- Electroplating is not suitable, but electrolysis is possible.
- Ideal for use in refrigeration, air conditioning, household appliances and decorative structures.
Specific Gravity: 7.95.
Weight Calculation: Length (m) x Width (m) x Thickness (mm) x Specific Gravity = kg
Example:
- SUS304 2.0 x 2.0 x 1220 x 2440. Weight: 2.0 x 1.22 x 2.44 x 7.95 = 44.65 kg.
Another example:
- SUS430 1.0 x 1000 x 2000. Weight: 1 x 1 x 2 x 7.95 = 15.9 kg.
Grades:
- The standard tolerance for material thickness is +/- 0.08 mm. For example, a board that is 2.0 mm thick may actually measure 1.92 mm.
- The thickness of the material should be measured using a micrometer and not a caliper.
2. COLD ROLLING STEEL
Code: SPCC, CRS (SPCD: Cold Plate for Stamping, SPCE: Cold Plate for Deep Drawing)
Hardness: HRB, 1/2H = 74 to 89, 1/4H = 65 to 80, 1/8H = 50 to 71, H = above 89
Tensile strength: Above 28 kgf/mm.
Material thickness: varies from 0.25 to 3.2 mm. Thicknesses above 3.2mm must be customized.
Material Width: The maximum width is 5 feet (1524 mm), but 4 feet (1219 mm or 1250 mm) is more commonly used. Any width less than 1524mm can be cut to size.
Material Length: Can be cut to any desired size. Typically 8 feet (2438 mm or 2500 mm).
Material properties:
- The metal has a gray luster and is prone to scratches and rust, so care must be taken to protect it and change the processing sequence immediately.
- Suitable for processes such as electroplating (multicolor zinc plating, white zinc plating, nickel plating, tin plating, etc.), painting, baking, powder coating, etc.
Specific Gravity: 7.85.
Weight Calculation: Length (m) x Width (m) x Thickness (mm) x Specific Gravity = kg.
Example:
- SPCC 2.0 x 1220 x 2440. Weight: 2.0 x 1.22 x 2.44 x 7.85 = 46.74 kg.
Another example:
- SPCC 1.0 x 1000 x 2000. Weight: 1 x 1 x 2 x 7.85 = 15.7 kg.
Grades:
- The standard tolerance for material thickness is +/- 0.08 mm. For example, a board that is 2.0 mm thick may actually measure 1.92 mm.
- The thickness of the material should be measured using a micrometer and not a caliper.
- To prevent rust, the surface of the workpiece can be lightly coated with anti-rust oil after processing or covered with oilcloth.
3. Aluminum
Code: AL, A1100P, A5052H32P, AL6061T6
Common models: A1100P-O (O represents a soft material without hardness), A1050P, A5052H32P, AL6061T6, AL6063T5.
Material Width: The maximum width is 5 feet (1524 mm), but 4 feet (1219 mm or 1250 mm) is more commonly used. Any width less than 1524mm can be cut to size.
Material Length: Can be cut to any desired size. Typically 8 feet (2438 mm or 2500 mm).
Material properties:
- The metal has a white luster and is prone to oxidation and corrosion, so a protective PVC film is often applied to the surface.
- Surface treatments include sand blasting, wire drawing or anodizing after polishing (non-conductive, can be dyed in various colors); chromate oxidation (also known as conductive oxidation, with primary color and golden yellow color).
Specific Gravity: 2.75.
Weight Calculation: Length (m) x Width (m) x Thickness (mm) x Specific Gravity = kg.
Example:
- AL 2.0 x 1220 x 2440. Weight: 2.0 x 1.22 x 2.44 x 2.75 = 16.37 kg.
Another example:
- AL 1.0 x 1000 x 2000. Weight: 1 x 1 x 2 x 2.75 = 5.5 kg.
Grades:
- The standard tolerance for material thickness is +/- 0.08 mm. For example, a board that is 2.0 mm thick may actually measure 1.92 mm.
- The thickness of the material should be measured using a micrometer and not a caliper.
- Care must be taken when processing aluminum plates to avoid scratches and protect the surface. Precautions must be taken to avoid cracks and knife marks during bending. (If the material is very hard, it can be annealed first or the bottom groove of the mold can be widened).
4.H dip galvanized steel plate
Code: SPGC
Hardness: HRB, 1/2H = 74 to 89, 1/4H = 65 to 80, 1/8H = 50 to 71, H = above 89.
Tensile strength: Above 40-55 kgf/mm².
Material thickness: 0.4 to 3.2 mm. Materials thicker than 3.2 mm are difficult to find and are usually replaced by galvanized white zinc.
Material Width: The maximum width is 5′ (1524 mm), normally 4′ (1219 mm or 1250 mm), and any size smaller than 1524 mm can be cut to size.
Material Length: Any size can be cut to size. Typically 8′ (2438 mm or 2500 mm).
Material properties:
- The metal is white and shiny, with patterns. It is not easily susceptible to rust, but may develop white rust spots due to corrosion.
- Surface treatment is generally not required.
- Electroplating (including multi-color zinc plating, white zinc plating, nickel plating, tin plating) is not permitted.
- Suitable for use in refrigeration, air conditioning, heavy engine and roof structure applications.
Specific Gravity: 8.25
Weight Calculation: Length (m) x Width (m) x Thickness (mm) x Specific Gravity = kg.
Example:
SPGC 2.0 x 1220 x 2440 Weight: 2.0 x 1.22 x 2.44 x 8.25 = 49.1 kg.
Another example:
SPGC 1.0 x 1000 x 2000 Weight: 1 x 1 x 2 x 8.25 = 16.5 kg.
Observation:
- The general tolerance for material thickness is +0, -0.08mm, which means a 2.0mm board can actually measure 1.92mm.
- Material thickness should be measured using a micrometer and not a cursor.
- If bending processing is necessary, be careful not to cause the zinc layer on the surface to fall off, and immediately remove any zinc powder from the bottom mold.
5. Hot rolled steel
Code: SPHC, HRS
Hardness: HRB, 1/2H = 74 to 89, 1/4H = 65 to 80, 1/8H = 50 to 71, H = above 89.
Tensile strength: 41 to 52 kgf/mm² or higher.
Material thickness: 1.4 to 6.0 mm. Materials thicker than 6 mm are coded as SS41.
Material Width: The maximum width is 5′ (1524 mm), normally 4′ (1219 mm or 1250 mm), and any size smaller than 1524 mm can be cut to size.
Material Length: Any size can be cut to size. Typically 8′ (2438 mm or 2500 mm).
Material properties:
- The metal is dark gray and shiny, but easily susceptible to rust. Surface scratches are not easily noticeable, so rust must be removed during processing.
- Electroplating (including color zinc plating, white zinc plating, nickel plating, tin plating) is not recommended.
- Suitable for baking painting, powder coating and other structural applications.
Specific Gravity: 7.85
Weight Calculation: Length (m) x Width (m) x Thickness (mm) x Specific Gravity = kg.
Example:
SPHC 2.0 x 1220 x 2440 Weight: 2.0 x 1.22 x 2.44 x 7.85 = 46.74 kg.
Another example:
SPHC 1.0 x 1000 x 2000 Weight: 1 x 1 x 2 x 7.85 = 15.7 kg.
Observation:
- The general tolerance for material thickness is +0, -0.08mm, which means a 2.0mm board can actually measure 1.92mm.
- Material thickness should be measured using a micrometer and not a cursor.
- To prevent rust, the processed surface can be lightly coated with anti-rust oil or covered with an oilcloth.
- If electroplating is required, the surface carbon layer must be removed by sandblasting or wire drawing.
6. Copper
Code: C1020, C1100, C2100, 2200, 2300, 2400 (red copper) and Brass above C2600.
Common models: C1020P-O (O represents soft material without hardness), C1020P-1/2H (Vickers hardness HV75 to 120), 1/4H (Vickers hardness HV60 to 100), H (Vickers hardness HV above 80).
Tensile strength: Material O = more than 20 kgf/mm², material 1/4H = 22 to 28 kgf/mm², material 1/2H = 25 to 32 kgf/mm², material H = 28 kgf/mm² or more.
Material thickness: Above 0.3mm.
Material Width: Typically 2′ (610 mm), and customization is required for widths exceeding this.
Material Length: Typically 5′ (1524 mm).
Material properties:
- 1xxx copper has a copper content of 99.9% (also known as electrolytic copper or collector copper) and has excellent electrical and thermal conductivity, good machinability, good welding properties and resistance to corrosion, weathering and has a metallic red luster . It is suitable for electrical and chemical industries.
- 2xxx copper has a copper content of 60 to 96% (also known as brass or busbar copper) and is ductile and has good machinability, making it suitable for electroplating and often used in wiring equipment, panels, cartridge cases , etc.
- Surface Treatment: Drawing or pickling and polishing, copper plating, tinning, nickel plating.
Specific Gravity: 8.9
Weight Calculation: Length (m) x Width (m) x Thickness (mm) x Specific Gravity = kg.
Example:
C1020P 1/4H 2.0 x 600 x 1500 weight: 2.0 x 0.6 x 1.5 x 8.9 = 16 kg.
Another example: C1020P 1/2H 1.0 x 1000 x 1000 weight: 1 x 1 x 8.9 = 8.9 kg.
Observation:
- The general tolerance for material thickness is +0, -0.08mm, which means a 2.0mm board can actually measure 1.92mm.
- Material thickness should be measured using a micrometer and not a cursor.
7. Introduction to common boards
7.1 Cold-rolled common steel sheet
Cold-rolled common steel sheet, also known as common carbon structural steel cold-rolled sheet or simply “cold plate”, is a steel sheet with a thickness of less than 4 mm made of hot-rolled common carbon structural steel.
It is produced through an additional cold rolling process at room temperature, which eliminates the formation of an oxide film on the surface and results in good surface quality and high dimensional accuracy. When subjected to annealing treatment, the sheet presents superior mechanical and technological properties.
Cold-rolled common steel sheet is the most widely used metal material in sheet metal manufacturing. It is available under various brands such as GB (Q195, Q215, Q235, Q275) and Japanese JIS (SPCC, SPCD, SPCE).
7.2 Continuous electrogalvanized steel sheet
Continuous Electro Galvanized Steel Sheet, also known as electrolytic sheet, is a type of steel sheet that goes through an electrogalvanization process. During this process, a layer of zinc coating is deposited on the surface of the prepared cold plate under the influence of an electric field. This zinc layer provides excellent corrosion resistance to the steel sheet.
This type of steel plate is classified according to various standards such as GB (DX1, DX2, DX3, DX4) and JIS (SECC, SECD, SECE).
7.3 Continuous hot-dip galvanized steel sheet
Continuous hot-dip galvanized steel sheet, also known as galvanized sheet or white iron sheet, features a visually appealing surface with block- or sheet-shaped crystal patterns, a durable coating, and exceptional resistance to atmospheric corrosion.
In addition to its aesthetic qualities, this type of steel sheet also has good welding and cold forming capabilities. Its coating is thicker compared to normal galvanized sheets, which makes it ideal for use on sheet metal parts that require greater corrosion resistance.
This type of steel plate is classified according to various standards such as GB (Zn100-PT, Zn200-SC, Zn275-JY) and Japanese JIS (SGCC, SGCD1, SGCD2, SGCD3).
7.4 Stainless steel plate
Stainless steel is a type of steel that offers resistance against weak corrosive media such as air, steam, water and chemical agents such as acids, alkalis and salt. In practical applications, steel resistant to weak corrosive media is often referred to as “stainless steel”, while steel resistant to chemical agents is referred to as “acid-resistant steel”.
Stainless steel can further be divided into:
- Ferritic stainless steel: This type of stainless steel contains 12% to 30% chromium. The corrosion resistance, toughness and weldability of ferritic stainless steel increase with increasing chromium content. Furthermore, its resistance to chloride stress corrosion cracking is better than other types of stainless steel.
- Austenitic stainless steel: This type of stainless steel contains more than 18% chromium and also about 8% nickel, as well as a small amount of molybdenum, titanium, nitrogen and other elements. It has good comprehensive performance and can resist corrosion from various media.
- Austenitic ferritic duplex stainless steel: This type of stainless steel has the advantages of austenitic and ferritic stainless steels and also has superplasticity.
- Martensitic stainless steel: This type of stainless steel has high strength, but low plasticity and weldability.
It is important to note that although the strength of stainless steel is relatively high, the wear on numerical control punches is relatively large, making it generally unsuitable for numerical punching.
Grades:
There are many types of stainless steel, but a commonly used austenitic stainless steel (1Cr18Ni9Ti) with the Japanese JIS (SUS) standard is often used in sheet metal processing.
7.5 Aluminum plate
Aluminum is a silvery-white lightweight metal with good thermal conductivity, electrical conductivity and ductility. However, pure aluminum has low strength and cannot be used as a structural material.
Sheet metal processing typically uses aluminum alloy plates. Based on the content of alloying elements, aluminum plates can be divided into eight series, including 1000 series, 2000 series, 3000 series, 5000 series, 6000 series, 7000 series and 8000 series. Of these, the 2000 series (aluminum alloy) copper-aluminum), 3000 series (manganese-aluminum alloy) and 5000 series (magnesium-aluminum alloy) are the most commonly used.
The 2000 series, also known as duralumin, is characterized by high hardness and is commonly used for various medium-strength parts and components. 3000 series, also known as rust-proof aluminum, has good resistance to rust due to its manganese content. The 5000 series, a magnesium-aluminum alloy, is known for its low density, high tensile strength and high elongation. In a certain area, aluminum-magnesium alloys are lighter than other series.
Common brands of aluminum alloys include 3A21 (formerly known as LF21), 5A02 (formerly known as LF2), and 2A06 (formerly known as LY6).
7.6 Copper plate
Red copper, also known as pure copper, is a material that has an attractive purple color and excellent conductivity, thermal conductivity, ductility and corrosion resistance. However, its high cost limits its widespread use, mainly as a conductor and thermal conductor.
Red copper is most commonly used in components that require the transfer of high current in power systems. Despite its good conductive properties, it is not suitable for use as a structural component due to its low resistance.
The grade of red copper is classified as T1, T2 or T3.
7 .7 Brass plate
Brass is a type of copper-zinc alloy that offers high strength and good workability in both cold and hot conditions. Despite its tendency to corrode and crack, brass is relatively inexpensive and widely used in a variety of applications.
The type of brass is classified as H59, H62 or H70.
