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The material of steel Square bar is mainly carbon steel, which contains high carbon element. It has excellent mechanical properties, high strength, good toughness, strong plasticity, and good wear resistance and corrosion resistance. These properties make square steel perform well in various engineering fields.
There are many specifications of square steel, which are mainly distinguished according to their cross-sectional dimensions. Generally speaking, the larger the cross-sectional size of square steel, the stronger its bearing capacity. Common square steel specifications are 8#, 10#, 12#, 14#, 16#, etc., where the numbers represent the section width.
Square steel: It is solid, bar. Different from the square tube, it is hollow and belongs to the pipe. Steel (Steel): It is a material of various shapes, sizes and properties required by steel ingots, billets or steel products through pressure processing
Hot-rolled square steel refers to steel rolled or processed into a square cross-section. Square steel can be divided into two types: hot-rolled and cold-rolled; the side length of hot-rolled square steel is 5-250mm, and the side length of cold-drawn square steel is 3-100mm.
MECHANICAL PROPERTIES:
Yield Point = 36,000 psi
Tensile Strength = 58,000 psi
Elongation = 23% in 2"
Brinell Hardness = 133; Melting Point = 2600F
Product Name | Carbon Steel Billet/Square Steel Bar/Mild Steel Square Billet |
Standard | ASTM, AISI, DIN, EN, GB, JIS, etc |
Model Number | ASTM 1010,1015,1020,1030,1035,1040,1045,1050,1055,1060,1022,1026,1033,1039,1053,1320,1330,1335,1340,1345,5115,5120,5130,5132,5135,5140,5145,5147,4118,4130,4135,4137,4140,4120,3140,etc |
Type | Square |
Surface | Pickled,Black,Bright,Polishing,Blasting,etc |
Specifications | Round bar: Diameter: 3mm~800mm Angle bar: Size: 3mm*20mm*20mm~12mm*100mm*100mm Square bar: Size: 4mm*4mm~100mm*100mm Hexagonal: Size: 2mm~100mm Flat bar: Thickness: 2mm~100mm Width: 10mm~500mm *Sizes are all customized, contact us for further details. :) |
Length | 3m,5.8m,6m,11.8m,12m or as required |
Application | Chemical industry, shipping industry, manufacturing industry, construction,decorate Industry, electric power, pump shafts, sanitary wares ,furniture handles,boiler, high temperature resistant,low temperatureresistant, corrosion resistant. |
Advantages | 1.Reasonable price with excellent quality |
2.Abundant stock and prompt delivery | |
3.Rich supply and export experiencesincere service |
| (H*W) | H*B | t1 | t2 | r | cm2 | kg/m | IX | IY | ix | IY | Wx | WY |
| 100*100 | 100*100 | 6 | 8 | 10 | 21.9 | 17.2 | 383 | 134 | 4.18 | 2.47 | 76.5 | 26.7 |
| 125*125 | 125*125 | 6.5 | 9 | 10 | 30.31 | 847 | 294 | 5.29 | 3.11 | 136 | 47 | |
| 150*150 | 150*150 | 7 | 10 | 13 | 40.55 | 31.9 | 1660 | 564 | 6.39 | 3.73 | 221 | 75.1 |
| 175*175 | 175*175 | 7.5 | 11 | 13 | 51.43 | 40.3 | 2900 | 984 | 7.5 | 4.37 | 331 | 112 |
| 200*200 | 200*200 | 8 | 12 | 16 | 64.28 | 50.5 | 4770 | 1600 | 8.61 | 4.99 | 477 | 160 |
| #200*204 | 12 | 12 | 16 | 72.28 | 56.7 | 5030 | 1700 | 8.35 | 4.85 | 503 | 167 | |
| 250*250 | 250*250 | 9 | 14 | 16 | 92.18 | 72.4 | 10800 | 3650 | 10.8 | 6.29 | 867 | 292 |
| #250*255 | 14 | 14 | 16 | 104.7 | 82.2 | 11500 | 3880 | 10.5 | 6.09 | 919 | 304 | |
| 300*300 | #294*302 | 12 | 12 | 20 | 108.3 | 85 | 17000 | 5520 | 12.5 | 7.14 | 1160 | 365 |
| 300*300 | 10 | 15 | 20 | 120.4 | 94.5 | 20500 | 6760 | 13.1 | 7.49 | 1370 | 450 | |
| 300*305 | 15 | 15 | 20 | 135.4 | 106 | 21600 | 7100 | 12.6 | 7.24 | 1440 | 466 | |
| 350*350 | #344*348 | 10 | 16 | 20 | 146 | 115 | 33300 | 11200 | 15.1 | 8.78 | 1940 | 646 |
| 350*350 | 12 | 19 | 20 | 173.9 | 137 | 40300 | 13600 | 15.2 | 8.84 | 2300 | 776 | |
| 400*400 | #388*402 | 15 | 15 | 24 | 179.2 | 141 | 49200 | 16300 | 16.6 | 9.52 | 2540 | 809 |
| #394*398 | 11 | 18 | 24 | 187.6 | 147 | 56400 | 18900 | 17.3 | 10 | 2860 | 951 | |
| 400*400 | 13 | 21 | 24 | 219.5 | 172 | 66900 | 22400 | 17.5 | 10.1 | 3340 | 1120 | |
| #400*408 | 21 | 21 | 24 | 251.5 | 197 | 71100 | 23800 | 16.8 | 9.73 | 3560 | 1170 | |
| #414*405 | 18 | 28 | 24 | 296.2 | 233 | 93000 | 31000 | 17.7 | 10.2 | 4490 | 1530 | |
| #428*407 | 20 | 35 | 24 | 361.4 | 284 | 119000 | 39400 | 18.2 | 10.4 | 5580 | 1930 | |
| *458*417 | 30 | 50 | 24 | 529.3 | 415 | 187000 | 60500 | 18.8 | 10.7 | 8180 | 2900 | |
| *498*432 | 45 | 70 | 24 | 770.8 | 605 | 298000 | 94400 | 19.7 | 11.1 | 12000 | 4370 | |
| 150*100 | 148*100 | 6 | 9 | 13 | 27.25 | 21.4 | 1040 | 151 | 6.17 | 2.35 | 140 | 30.2 |
| 250*150 | 194*150 | 6 | 9 | 16 | 39.76 | 31.2 | 2740 | 508 | 8.3 | 3.57 | 283 | 67.7 |
| 250*275 | 244*175 | 7 | 11 | 16 | 5.24 | 44.1 | 6120 | 985 | 10.4 | 4.18 | 502 | 113 |
| 300*200 | 294*200 | 8 | 12 | 20 | 73.03 | 57.3 | 11400 | 1600 | 12.5 | 4.69 | 779 | 160 |
| 350*250 | 340*250 | 9 | 16 | 20 | 101.5 | 79.7 | 21700 | 3650 | 14.6 | 6 | 1280 | 292 |
| 400*300 | 390*300 | 10 | 14 | 24 | 136.7 | 107 | 38900 | 7210 | 16.9 | 7.26 | 2000 | 481 |
| 450*300 | 440*300 | 11 | 18 | 24 | 157.4 | 124 | 56100 | 8110 | 18.9 | 7.18 | 2550 | 541 |
| 500*300 | 482*300 | 11 | 15 | 28 | 146.4 | 115 | 60800 | 6770 | 20.4 | 6.8 | 2520 | 451 |
| 488*300 | 11 | 18 | 28 | 164.4 | 129 | 71400 | 8120 | 20.8 | 7.03 | 2930 | 541 | |
| 600*300 | 582*300 | 12 | 17 | 28 | 174.5 | 137 | 103000 | 7670 | 24.3 | 6.63 | 3530 | 511 |
| 588*300 | 12 | 20 | 28 | 192.5 | 151 | 118000 | 9020 | 24.8 | 6.85 | 4020 | 601 | |
| #594*302 | 14 | 23 | 28 | 222.4 | 175 | 137000 | 10600 | 24.9 | 6.9 | 4620 | 701 |
| Grade | Dia(mm) | Chemical Composition (%) | |||||||||
| C | Si | Mn | P | S | Ni | Cr | Cu | Ti | Mo | ||
| 45 | 18-60 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 | ≤0.25 | ||
| 55 | 0.52-0.60 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 | ≤0.25 | |||
| 40Mn2 | 0.37-0.44 | 0.17-0.37 | 1.40-1.80 | ≤0.035 | ≤0.035 | ≤0.30 | |||||
| 20CrMnTi | 0.17-0.23 | 0.17-0.37 | 0.80-1.10 | ≤0.035 | ≤0.035 | 1.00-1.30 | 0.04-0.10 | ||||
| 20CrMo | 0.17-0.24 | 0.17-0.37 | 0.40-0.70 | ≤0.035 | ≤0.035 | 0.80-1.10 | 0.15-0.25 | ||||
| 30CrMo | 0.26-0.34 | 0.17-0.37 | 0.40-0.70 | ≤0.035 | ≤0.035 | 0.80-1.10 | 0.15-0.25 | ||||
| 35CrMo | 0.32-0.40 | 0.17-0.37 | 0.40-0.70 | ≤0.035 | ≤0.035 | 0.80-1.10 | 0.15-0.25 | ||||
| 42CrMo | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | 0.90-1.20 | 0.15-0.25 | ||||
| 60Si2MnA | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | 0.90-1.20 | |||||
| Grade | Mechanical property | |||||
| (Quenching, tempering, longitudinal) | ||||||
| Tensile strength | Yield strength | Elongation | Elongation | Percentage reduction of area | Impact absorbing energy | |
| (σb/MPa) | (σs/MPa) | (δ5/%) | (δ10/%) | (ψ/%) | (AkU2/J) | |
| 45 | ≥600 | ≥335 | ≥16 | ≥40 | 39 | |
| 55 | ≥645 | ≥380 | ≥13 | ≥35 | - | |
| 40Mn2 | ≥885 | ≥735 | ≥12 | ≥45 | 55 | |
| 20CrMnTi | ≥1080 | ≥850 | ≥10 | ≥45 | 55 | |
| 20CrMo | ≥885 | ≥685 | ≥12 | ≥50 | 78 | |
| 30CrMo | ≥930 | ≥785 | ≥12 | ≥50 | 63 | |
| 35CrMo | ≥980 | ≥835 | ≥12 | ≥45 | 63 | |
| 42CrMo | ≥1080 | ≥930 | ≥12 | ≥45 | 63 | |
| 60Si2MnA | ≥1274 | ≥1176 | ≥5 | ≥25 | - | |
| Theoretical weight table of square steel bar | |||||
| Side length(mm) | Sectional area(cm2) | Theoretical weight (kg/m) | Side length | Sectional area(cm2) | Theoretical weight (kg/m) |
| 5mm | 0.25 | 0.196 | 30mm | 9 | 7.06 |
| 6mm | 0.36 | 0.283 | 32mm | 10.24 | 8.04 |
| 7mm | 0.49 | 0.385 | 34mm | 11.56 | 9.07 |
| 8mm | 0.64 | 0.502 | 36mm | 12.96 | 10.17 |
| 9mm | 0.81 | 0.636 | 38mm | 14.44 | 11.24 |
| 10mm | 1 | 0.785 | 40mm | 16 | 12.56 |
| 11mm | 1.21 | 0.95 | 42mm | 17.64 | 13.85 |
| 12mm | 1.44 | 1.13 | 45mm | 20.25 | 15.9 |
| 13mm | 1.69 | 1.33 | 48mm | 23.04 | 18.09 |
| 14mm | 1.96 | 1.54 | 50mm | 25 | 19.63 |
| 15mm | 2.25 | 1.77 | 53mm | 28.09 | 22.05 |
| 16mm | 2.56 | 2.01 | 56mm | 31.36 | 24.61 |
| 17mm | 2.89 | 2.27 | 60mm | 36 | 28.26 |
| 18mm | 3.24 | 2.54 | 63mm | 39.69 | 31.16 |
| 19mm | 3.61 | 2.82 | 65mm | 42.25 | 33.17 |
| 20mm | 4 | 3.14 | 70mm | 49 | 38.49 |
| 21mm | 4.41 | 3.46 | 75mm | 56.25 | 44.16 |
| 22mm | 4.84 | 3.8 | 80mm | 64 | 50.24 |
| 24mm | 5.76 | 4.52 | 85mm | 72.25 | 56.72 |
| 25mm | 6.25 | 4.91 | 90mm | 81 | 63.59 |
| 26mm | 6.76 | 5.3 | 95mm | 90.25 | 70.85 |
| 28mm | 7.84 | 6.15 | 100mm | 100 | 78.5 |
Carbon Steel Hot Rolled Square Steel Bar
The manufacturing process of steel square bar includes hot rolling and cold drawing. Hot-rolled square steel is made by heating the billet to a certain temperature and pressing it through rolling machinery. The surface of hot-rolled square steel is relatively rough, but its mechanical properties are better. Cold-drawn square steel is made by cold-working hot-rolled square steel. Its surface is smooth, but its strength and toughness are slightly lower than hot-rolled square steel.
Square Steel Bar Usage:
The application fields of steel Square bar are very wide. In the field of construction, square steel is often used in structures such as beams and columns, foundations, bridges, etc., and its strength and stability can ensure the safety of buildings. In the field of machinery manufacturing, square steel is often used to manufacture machine bases, bearing housings and other components. Its strength and durability can ensure the stability and service life of the machine. In the field of logistics, square steel is often used to make shelves, and its load-bearing capacity and stability can ensure the safe storage of goods.
Our Advantages:
Quality first: production and inspection in strict accordance with production standards;
Price advantage: discounts based on real market prices;
Transaction security: There will be no loss of customer funds;
After-sales guarantee: the customer's problem is our problem;
Long-term cooperation: quality assurance, price advantage, sincere service can last for a long time.
High quality service!
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