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Steel is believed to have been seen by the vast majority of people. Its use is very extensive, but our most familiar estimate is for building new homes. The round bar we are going to introduce today is a solid steel bar with a circular section. Then, how is the weight of the round steel calculated? What is the formula for calculating the weight of the round steel ? I will use stainless steel round bar and galvanized round bar as examples to explain the theoretical weight of the round bar and related knowledge of the round bar weight calculation formula .
Round steel classification
Round steel is divided into hot-rolled, forged and cold-drawn three. The specifications of the hot-rolled round steel are 5.5-250 mm. Among them: 5.5-25 mm small round steel is mostly supplied by straight bars, often used as reinforcement, bolts and various mechanical parts; Round steel larger than 25 mm is mainly used to manufacture mechanical parts and seamless steel tubes. Wait.
Round steel material
Round steel material: Q195, Q235, 10#, 20#, 35#, 45#, Q215, Q235, Q345, 12Cr1Mov, 15CrMo, 304, 316, 20Cr, 40Cr, 20CrMo, 35CrMo, 42CrMo, 40CrNiMo, GCr15, 65Mn , 50Mn, 50Cr, 3Cr2W8V, 20CrMnTi, 5CrMnMo, etc.
Round specifications
30crmo round steel specifications is how much
1. Chromium molybdenum alloy steel, this kind of steel is a kind of alloy steel in our country, 30 refers to the carbon content. It uses it to make high strength bolts of 10.8S 8.8S. However, it must be tested before use to confirm its composition content. , can be assured to use. Chinese brand 30CrMO equivalent to Japan SCM430
2. This steel has high strength and toughness, high hardenability, critical quench-hardened diameter in oil 15~70mm; steel's thermal strength is also good, below 500 °C has enough high temperature strength, but 550 °C When the strength of the alloy drops significantly, when the alloying element is at the lower limit, the welding is very good, but when the upper limit of the alloying element is welded, the weldability is moderate, and the welding temperature must be preheated to 175° C. or above; the steel has good machinability, and the plasticity during cold deformation is moderate; The first type of temper brittleness exists in the range of 300-350°C; there is a tendency to form white spots.
Round symbol
The round steel is a grade 1 steel, the symbol is Φ, grade 2 and grade 3 steel are threaded, grade 2 is a grade 1 steel symbol plus one horizontal, and grade 3 is a grade 1 steel symbol is two vertical, Add a horizontal below
Round steel prices
In general, the price of round steel is not uniform, and the price is generally between 3,000 yuan / ton - 9,000 yuan / ton, different materials, different specifications, different uses and even the production company different round steel prices will be different For example, in 2006, the same 2Cr13 φ12-75 round steel, Xining unit price is about 8,500 yuan / ton, East special unit price is 8,700 yuan / ton. However, the factors that affect the price of round steel are diverse, not just regional factors.
Note: This price is for reference only! Due to geographical differences, of course, the price will be different. If you want to know more about the relevant price details, please use the local dealers to provide!
Round steel manufacturers
09mnd round steel manufacturers have Shanghai Shige Metal Materials Co., Ltd., Shanghai Haorong Industry & Trade Co., Ltd., Shanghai Chenzhong Heavy Industry & Trade Co., Ltd. are all good manufacturers, their 09mnd round steel material quality is good, fair prices, very good factory.
Round weight calculation formula
Round weight calculation formula: W=0.006165*D*D(D= diameter mm)
The formula for calculating the weight of round steel and steel pipe
Round bar (kg/m) W = 0.00617 * Diameter * diameter (kg/m) round steel pipe (kg/m) W = 0.02466 * Wall thickness * (outer diameter - wall thickness) rectangular steel pipe (kg/m) W = 0.0157 * Wall thickness * (section length + section width -2.8584 * wall thickness) Round steel weight formula - Round steel weight (kg) = 0.00617 * diameter * diameter * length of square steel weight (kg) = 0.00785 * side width * side width * The length of the first set to a good density of 7.85KG / cubic decimeter, generally know the diameter D decimeters and length L meters, now deduced calculation formula: round weight = density * surface area * length = 7.85KG/...
How to calculate the weight of 45 steel?
The diameter of the round bar is 250mm and the length is 50mm.
Calculation: 3.14159X Radius X Radius X Length X7.9, where 7.9 is the density volume of the steel times the density, where the density of the 45 steel needs to be calculated 12.5*12.5*3.14*5*7.8=19.134kg
45 steel weight calculation
Calculation formula: diameter * diameter * 0.01234 * length = weight 60 * 60 * 0.01234 * 10 = 444.24 kg 45 steel density 7.85 kilograms per cubic meter you calculate the weight is the volume * density or check the mechanical design manual has a theoretical weight of round steel, The diameter of the 60mm round steel is 22.2 kg per meter, also ... 3.14*(60/2)*(60/2)*10*1000*7.8=weight
Stainless steel round bar:
Stainless steel round bar belongs to the category of long products and also belongs to the category of bars. The so-called stainless steel round bars are long products with a uniform round cross section and are generally about four meters long. It can be divided into light circles and black bars. The so-called light circle means that the surface is smooth and has undergone a quasi-rolling process. The so-called black stick, which means that the surface is black and thick, is directly hot rolled. Common materials are 301, 304, 303, 316, 316L, 304L, 321, 2520, 201, 202, etc. Specifications with a diameter such as "50" means that the diameter of 50 mm round steel.
Stainless steel round steel has broad application prospects and is widely used in metal kitchenware, shipbuilding, petrochemical, machinery, medicine, food, electricity, energy, aerospace, and architectural decoration. Equipment for the use of seawater, equipment for production of chemicals, dyes, paper, oxalic acid, and fertilizer; photography, food industry, coastal facilities, ropes, CD rods, bolts, nuts.
Hot-dip galvanized round steel:
Galvanized round steel production process: Before the hot-dip galvanized round steel enters the hot dip galvanizing operation assembly line, the selected flat and unrefined square tube is firstly sent to a pickling workshop, and soaked with sulfuric acid or hydrochloric acid to remove the hot-dip galvanized round steel surface. Iron oxide skin and floating rust. After two picklings, the pickling time varies from 50 to 80 minutes depending on the raw materials of the hot-dip galvanized round steel. After the round rust and oxide scales on the surface of the round steel are completely pickled off, they are immediately immersed in the clean water tank and wait for plating. Zinc can prevent re-oxidation of hot-dip galvanized round steel. After cleaning with the second clean water, it is conveyed on a drying bed and dried. Then the hot-dip galvanized round steel is immersed in a zinc pool around 460°C for hot-dip galvanizing. Finally, According to customer's different requirements, the dry-cooled hot-dip galvanized round steel can be oiled or passivated.
The difference between round steel and other steel bars
1. The appearance is not the same, round steel appearance light round, no lines and no ribs, other steel surface appearance is engraved or ribbed, so that the adhesion of round steel and concrete is small, and other steel and concrete Strong adhesion.
2. The composition is different. The round steel (first grade steel) belongs to ordinary low carbon steel, and other steel bars are mostly alloy steel.
3. The strength is not the same, the strength of round steel is low, and the strength of other steels is high, that is, round steel with the same diameter and diameter is comparable to other steel bars. The round steel can withstand smaller pulling force than other steel bars, but the plasticity of round steel is higher than that of other steel bars. Strong, that is, the round steel has a larger deformation before it is broken, and the other steel bars are much less deformed before being pulled off.
Editor's summary: The above is a description of how the weight of the round bar weight calculation formula is calculated. Hopefully, it will help friends who have this need! For more information, please continue to pay attention to our website, follow-up will show more exciting content.
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