Thread Content
This post was last edited by shiwendong on 2017-4-11 at 11:09. Formulas for calculating the weight of metal materials: If there are any errors, please correct them in the comments. Specific gravities of commonly used materials: Iron = 7.85, Aluminum = 2.7, Copper = 8.95, Stainless steel = 7.93. Elongation rate of steel mesh: The pitch in the short direction of the diamond-shaped holes divided by twice the thickness of the bars equals 1 square meter. How many meters can a steel mesh be stretched? Weight of wire: Wire diameter × wire diameter × 0.00617 = weight of 1 meter of wire. Formula for calculating the density of 304 stainless steel: W = 3.1416 × wall thickness (outer diameter – wall thickness) × density; here, W is in units of kg/m, wall thickness and outer diameter are in units of mm, while the density values are as shown in the table below. Density grades of stainless steel welded pipes used for fluid transport: Density (g/cm3): 1Cr18Ni9, 0Cr19Ni19, 00Cr19Ni11, 0Cr18Ni11Ti, (1Cr18Ni9Ti) – 7.93; 0Cr25Ni20, 0Cr17Ni12Mo2, 00Cr17Ni14Mo2, 0Cr18Ni11Nb – 7.98; 00Cr17 – 7.70; 0Cr13, 00Cr18Mo2 – 7.75. Formula for calculating theoretical weight: Theoretical Weight (kg) = Thickness (mm) * Width (m) * Length (m) * Density value (g/cm3). Density values (g/cm3): Steel grades 7.93 – 201, 202, 301, 302, 304, 304L, 305, 321; 7.98 – 309S, 310S, 316, 316L, 347; 7.75 – 405, 410, 420; 7.70 – 409, 430, 434. The above are some of the commonly used density tables for stainless steel, for reference only. If you are just doing a rough estimate, you can use the general density of steel, which is 7850 kg/m3. Simple formula for calculating the weight of stainless steel: The weight of a stainless steel sheet per square meter (in kg) is calculated as: density * thickness (mm) * width (mm) * length (m). For 304 and 321 pipes, the weight per meter (in kg) is calculated as: 0.02491 * wall thickness (mm) * (outer diameter – wall thickness) (mm). For 316L and 310S pipes, the weight per meter (in kg) is calculated as: 0.02495 * wall thickness (mm) * (outer diameter – wall thickness) (mm). The weight per meter of stainless steel bars is calculated as: diameter (mm) * diameter (mm); for nickel-based stainless steel, the value is 0.00623 ； Chromium stainless steel: 0.00609). The unit used for calculating the theoretical weight of steel is kilogram (kg). Its basic formula is: W (weight, kg) = F (cross-sectional area, mm2) × L (length, m) × ρ (density, g/cm3) × 1/1000. The formulas for calculating the theoretical weight of various steel types are as follows: For round bars and wire rods (kg/m), W = 0.006165 × d × d. To find the weight per meter for a round bar with a diameter of 100 mm… Weight per m = 0.006165 × 1002 = 61.65 kg of rebar (kg/m). W = 0.00617 × d × dd; for rebar with a cross-sectional diameter of 12 mm, calculate the weight per meter. Weight per m = 0.00617 × 12 × 2 = 0.89 kg. For square steel, W = 0.00785 × a × a; where a is the edge width in mm. Calculate the weight per meter for square steel with an edge width of 20 mm. Weight per m = 0.00785 × 202 = 3.14 kg for flat steel (kg/m). W = 0.00785 × b × db. The edge width is in mm and the thickness is in mm. For flat steel with an edge width of 40 mm and a thickness of 5 mm, calculate the weight per meter. Weight per m = 0.00785 × 40 × 5 = 1.57 kg. For hexagonal steel (kg/m), W = 0.006798 × s × ss. The distance between opposite sides is 50 mm; determine the weight per meter for hexagonal steel with this distance. Weight per m = 0.006798 × 502 = 17 kg. For an octagonal steel bar, W = 0.0065 × s × ss. Given a side distance of 80 mm, determine the weight per meter. Weight per m = 0.0065 × 802 = 41.62 kg. For equilateral angle steel: W = 0.00785 × b; d = edge width; thickness = edge thickness; R = inner arc radius; r = end arc radius. Calculate the weight per meter for equilateral angle steel with dimensions of 20 mm × 4 mm. From the metallurgical product catalog, it can be found that for equal-angle steel with dimensions of 4 mm × 20 mm, R is 3.5 and r is 1.2; therefore, the weight per meter is 0.00785 × 1.15 = 1.15 kg per meter. For unequal-angle steel: W = 0.00785 × B; the length of the long side is b, the length of the short side is d, and the thickness of the side is t. R represents the radius of the inner arc, while r represents the radius of the end arc. Calculate the weight per meter for unequal-angle steel with dimensions of 30 mm × 20 mm × 4 mm. From the metallurgical product catalog, it can be found that for the irregular angle steel with dimensions 30 × 20 × 4, R is 3.5 and r is 1.2. Therefore, the weight per meter is 0.00785 × = 1.46 kg per meter. W = 0.00785 × h; b = length of the legs; d = thickness of the web; t = average thickness of the legs; R = radius of the inner arc; r = radius of the end arcs. Calculate the weight per meter for angle steel with dimensions 80 mm × 43 mm × 5 mm. From the metallurgical product catalog, it can be found that for this channel steel, t is 8, R is 8, and r is 4. Therefore, the weight per meter is = 0.00785 × 2] = 8.04 kg. For an I-beam: W = 0.00785 × h; b = height; d = length of the legs; t = average thickness of the legs; R = radius of the inner arc; r = radius of the end arcs. Calculate the weight per meter for an I-beam with dimensions of 250 mm × 118 mm × 10 mm. According to the metal materials manual, for this I-beam, t is 13, R is 10, and r is 5. The weight per meter is therefore 0.00785 × 42.03 = 3.29 kg/m2. For a steel plate with a thickness of 4 mm, the weight per m2 can be calculated as 7.85 × dd. Weight per m2 = 7.85 × 4 = 31.4 kg. For steel pipes (including both seamless and welded pipes), the weight is given by W = 0.02466 × S × (D – S), where D is the outer diameter and S is the wall thickness. Calculate the weight per meter for a seamless steel pipe with an outer diameter of 60 mm and a wall thickness of 4 mm. Weight per m = 0.02466 × 4 × (60 – 4) = 5.52 kg. Some common formulas for calculating the weight of metal materials: formulas for calculating the weight of steel pipes, square steel, and steel plates. • Weight of round steel (kg) = 0.00617 × diameter × diameter × length • Weight of square steel (kg) = 0.00785 × side width × side width × length • Weight of hexagonal steel (kg) = 0.0068 × opposite side width × opposite side width × length • Weight of octagonal steel (kg) = 0.0065 × opposite side width × opposite side width × length • Weight of threaded steel (kg) = 0.00617 × calculated diameter × calculated diameter × length • Weight of angle steel (kg) = 0.00785 × (side width + side width – thickness) × thickness × length • Weight of flat steel (kg) = 0.00785 × thickness × side width × length • Weight of steel pipe (kg) = 0.02466 × wall thickness × (outer diameter – wall thickness) × length • Weight of steel plate (kg) = 7.85 × thickness × area • Weight of round copper rod (kg) = 0.00698 × diameter × diameter × length • Weight of round brass rod (kg) = 0.00668 × diameter × diameter × length • Weight of round aluminum rod (kg) = 0.0022 × diameter × diameter × length • Weight of square copper rod (kg) = 0.0089 × side width × side width × length • Weight of square brass rod (kg) = 0.0085 × side width × side width × length • Weight of square aluminum rod (kg) = 0.0028 × side width × side width × length • Weight of hexagonal copper rod (kg) = 0.0077 × opposite side width × opposite side width × length • Weight of hexagonal brass rod (kg) = 0.00736 × side width × opposite side width × length • Weight of hexagonal aluminum rod (kg) = 0.00242 × opposite side width × opposite side width × length • Weight of copper plate (kg) = 0.0089 × thickness × width × length • Weight of brass plate (kg) = 0.0085 × thickness × width × length • Weight of aluminum plate (kg) = 0.00171 × thickness × width × length • Weight of round copper pipe (kg) = 0.028 × wall thickness × (outer diameter – wall thickness) × length • Weight of round brass pipe (kg) = 0.0267 × wall thickness × (outer diameter – wall thickness) × length • Weight of round aluminum pipe (kg) = 0.00879 × wall thickness × (outer diameter – wall thickness) Note: The unit for length in the formulas is meters, the unit for area is square meters, and all other units are millimeters. Several formulas and parameters for calculating wire mesh: • Weight of wire mesh: Wire diameter × wire diameter × mesh count = weight in pounds per square meter • Weight of steel plate mesh: Weight of 1 square meter of steel plate ÷ elongation rate = weight of 1 square meter of steel plate mesh • Weight of steel plate: Plate thickness × specific gravity = weight of 1 square meter of steel plate