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Help CenterAISI 1018 1045 4140 4340 5mm - 500mm Hot Rolled Carbon Alloy Steel Round Bar
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Steel Round bar refers to a solid strip of steel with a circular cross section. Its specifications are expressed in millimeters of diameter, such as "50" means a round steel with a diameter of 50 mm. Steel Round bar is divided into three types: hot rolled, forged and cold drawn. The specifications of hot-rolled round steel are 5.5-250mm. Among them: 5.5-25 mm small round steel is mostly supplied in bundles of straight strips, which are often used as bolts and various mechanical parts; round steel larger than 25 mm is mainly used for manufacturing mechanical parts or seamless steel pipe billets.
The difference between steel Round bar and other steel bars: The shape is different. The shape of round bar is smooth and round, without grain and ribs. Other steel bars have grooves or ribs on the surface, which will cause the bond between round bar and concrete. Small, while other steel bars have a strong bond with concrete.
Common materials for round steel bars include A36, Q235B, Q355B, No. 45 round steel, 42CrMo4 round steel, 40Mn2 round steel, T12 steel, 40Cr、20Cr、35CrMo、42CrMo、20CrMnTi、40CrNiMo、30CrMo、16Mn（Q345B）、12Cr1MoV、25Cr2MoV、38CrMoAl、18CrNiMo7-6、17CrNiMo6、20MnCr5、16MnCr5、4140、4145H、4340、8620、4130、5140、SCM440、SCM415、SNCM439、SNCM220、40CrMnMo、50CrVAetc.
Alloy structural steel: 42CrMo4 (1.7225) conforms to EN 10083/3-2006, a modified variety of AISI 4140 steel. This steel has good machinability, is easy to polish, easy to knurl, and can be electroplated.
Characteristics and applications: High strength, hardenability, good toughness, small deformation during quenching, and high creep strength and endurance strength at high temperatures.
Used to manufacture forgings requiring higher strength and larger tempered cross-sections than 35CrMo steel, such as large gears for locomotive traction, turbocharger drive gears, rear axles, connecting rods and spring clips subjected to extremely high loads, and can also be used for drill pipe joints and fishing tools in oil wells below 2000m.
| D(mm) | Area(cm2) | Weight(kg/m) | D(mm) | Area(cm2) | Weight(kg/m) | D(mm) | Area(cm2) | Weight(kg/m) | Steel grade | Steel grade |
| 5 | 0.1963 | 0.154 | 45 | 15.9 | 12.48 | 90 | 63.62 | 49.94 | A36 | Q235A |
| 5.6 | 0.2463 | 0.193 | 48 | 18.1 | 14.21 | 95 | 70.88 | 55.64 | A569-36K | Q235A |
| 6 | 0.2827 | 0.222 | 50 | 19.64 | 15.42 | 100 | 78.54 | 61.65 | SAE 1008-1012 | Q235A |
| 6.3 | 0.3117 | 0.245 | 53 | 22.06 | 17.32 | 105 | 86.59 | 67.97 | A576 | Q235A |
| 7 | 0.3848 | 0.302 | 56 | 24.63 | 19.33 | 110 | 95.03 | 74.6 | A572 GR50 | Q345A |
| 8 | 0.5027 | 0.395 | 60 | 28.27 | 22.19 | 120 | 113.1 | 88.78 | Ex-Ten50 | Q345A |
| 9 | 0.6359 | 0.499 | 63 | 31.17 | 24.47 | 125 | 122.72 | 96.33 | MS-200 | Q690 |
| 10 | 0.7854 | 0.617 | 65 | 33.18 | 26.05 | 130 | 132.73 | 104.2 | MS-310 | Q345A |
| 11 | 0.9503 | 0.746 | 70 | 38.48 | 30.21 | 140 | 153.72 | 120.84 | C1018 | 40Cr |
| 12 | 1.131 | 0.888 | 75 | 44.18 | 34.68 | 150 | 176.72 | 138.72 | 1045 CDS | 45 |
| 13 | 1.327 | 1.04 | 80 | 50.27 | 39.46 | 160 | 201.06 | 157.83 | SQ TUBE | 16Mn |
| 14 | 1.539 | 1.21 | 85 | 56.75 | 44.55 | 170 | 226.98 | 178.18 | 4150 HRS | ML42CrMo |
Shandong Anli Metal Co., Ltd. is a leading comprehensive enterprise integrating various metal products. Our portfolio includes hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, steel sections, steel pipes, heat exchange pipes, automobile exhaust pipes, anchor rods, steel wires, and metal mesh. Additionally, we offer stainless steel, aluminum, copper, and metal raw materials such as billets, aluminum ingots, zinc ingots, magnesium ingots, and lead ingots.
With five production and sales bases strategically located in Binzhou, Liaocheng, Wuxi, Tianjin, Jinan, and Tai'an, we boast over 100 production lines. Our group company has imported the most advanced technology from Germany, Japan, Belgium, the United States, and the United Kingdom for iron-smelting and steel processing. Equipped with a complete automatic system, we have become one of the largest and most advanced professional manufacturers in China.
We possess four nationally recognized laboratories, two technical engineering centers, and five corporate technology centers, ensuring the highest quality standards. Our products are exported to more than 50 countries and regions worldwide, including North America, South America, Europe, the Middle East, Russia, Africa, and others.
Company Philosophy:
• Quality First: We adhere strictly to production standards during production and inspection.
• Price Advantage: We offer discounts based on real market prices.
• Transaction Security: Customer funds are always protected.
• After-Sales Guarantee: We treat customer problems as our own.
• Long-Term Cooperation: Our quality assurance, price advantage, and sincere service ensure lasting partnerships.
Shandong Anli Metal, with quality as the foundation and technology as the leader, sincerely invites friends from all walks of life to join us creating a brilliant chapter in the metal manufacturing industry!
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