Product Description
Product Description
Round steel is a kind of hollow cylindrical metal material, which is widely used in construction, machinery manufacturing, automobile manufacturing, energy, transportation and other industries.
Round steel is mainly made of carbon steel, alloy steel and tool steel.
Among them, carbon steel round steel refers to steel with carbon content within the range of 0.20% to 0.55%.
Carbon steel round steel is an economical and practical structural material with good weldability, plasticity and machinability.
Alloy steel round steel refers to the steel with a certain amount of alloying elements (chromium, manganese, cobalt, boron, molybdenum, vanadium, etc.), which can obtain higher strength, hardness, corrosion resistance and wear resistance.
Tool steel Round steel is a kind of high-speed tool steel material, which has the advantages of high hardness, high red hardness and wear resistance.
The production process of round steel is very diverse, including hot rolling, cold drawing and cold drawing.
Among them, the hot rolling production process refers to the steel material heated to a certain temperature, plastic deformation through rolling machinery and equipment, pressed into different specifications of the shape of steel.
The cold drawing process is the use of steel wire material for cold drawing, which can obtain a higher surface finish for the production of precision parts.
Cold drawing process is to draw steel in cold storage to obtain higher density, hardness and strength.
The wide application of round steel lies in its material characteristics and production process, which can meet the needs of different industries.
In construction projects, round steel is mainly used to build steel structure houses, large factories, Bridges, oil drilling platforms and oil mining equipment.
In the machinery manufacturing industry, round steel is mainly used to process gears, bearings, connecting rods, pins, shafts and other parts.
In the automobile manufacturing industry, round steel is mainly used to make auto parts, frames, suspension systems, guiding mechanisms and so on.
It is also widely used in energy, transportation and other industries.
Product Features
1).Composition:
| C | Si | Mn | Cr | Mo | P | S |
| 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | 0.8-1.10 | 0.15-0.25 | <0.035 | <0.04 |
2). Equivalent Grades :
| GB | DIN | ASTM | JIS | BS | NF |
| 42CrMo | 1.7225 | 4140 | SCM440 | 708M40 | 42CD4 |
3). Diameters:6mm-400mm
Length:3.5m-9m or as required
4). Smelting Process:
EAF+LF+VD
Note:EAF=Electric Arc Furnace; LF=Ladle Furnace; VD=Vacuum Degassing;
5). Properties of 4140 alloy steel:
Special alloy steel, engineering steel supplied in quenched and tempered conditions. Very good machinability. High toughness, creep strength, repeated impact resistance.
6). Application of 4140 alloy steel:
Components with high requirements on toughness, e.g. gear wheels, pinions, connecting rods, parts for mechanical engineering
Details and Packing Images
1.What is a steel round bar?
A steel round bar is a cylindrical metallic bar widely used in construction, industrial applications, and manufacturing. These round bars come in various sizes and materials tailored to different industries. The steel price varies based on material composition, size, and market demand.
2.What is a round bar called?
The most common shapes are round bar (also called rod), rectangular bar (including square bar, the special case of equal sides), and hexagonal bar (usually called hex bar for short). Tube and pipe are similar, but have hollow centers and are traditionally not called "bar" in industrial usage.
3.What is the difference between a round bar and a rebar?
The first key difference to note is within the strength of the two bars. The rebar has a much higher tensile and maximum bending strength. Such properties make it the perfect material for fortifying concrete. In doing just that, the rebar can withhold its molecular integrity for well over 100 years.
4.What is the standard size of round bar stock?
Standard diameters range from 0.25″ all the way up to 24″ but other sizes may be available. Metal bars are valued for their versatility, especially steel bar stock. These are strong, with a high load bearing capacity as well as elastic, reducing the potential for weak points over time.
5.How strong is a round bar?
Strength and Durability: Round bars exhibit excellent tensile and compressive strength, making them suitable for high-stress applications. Rotational Applications: Their cylindrical shape allows them to excel in applications involving rotation, such as axles, shafts, and other machinery components.