Forged Alloy Steel AISI 4140 Round Bar

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Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
5 m.t.
Supply Capability:
100000 m.t./month

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Item specifice:

Standard: AISI,JIS,GB,BS,DIN,API,EN,ASTM Technique: Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Saw,Extruded,EFW,Spring Shape: U Channel,Square,C Channel,Hexagonal,Round,Rectangular,Oval,LTZ
Surface Treatment: Galvanized,Coated,Copper Coated,Color Coated,Oiled,Dry,Chromed Passivation,Polished,Bright,Black,PVDF Coated Steel Grade: Q195,Q215,Q235,Q215B,Q235B,RHB335,HRB400,200 Series,300 Series,400 Series,600 Series,SS400-SS490,10#,20#,A53(A,B) Certification: ISO,SGS,CE
Thickness: as required Length: as required Net Weight: as required

Product Description:

Product Description of AISI 4140 Round Bar 

AISI 4140 round bar are flawless completely free from cracks and flakes, and does not contain any other imperfection,such as porosity non-metallic inclusions segregations, hard spots and residual tensions to a degree affecting their strength and durability.

Product:forged alloy steel AISI 4140 round bar
Material:4145, 42CrMo4, 4140, SAE8620 ,4340 etc.
Supplier Range:
OD.200-800mm,Weight≤20T
Delivery time:30 days after receive the deposit.
Produce Process:EAF + LF + VD +(ESR) + Forged + Heat Treatment (optional)
Delivery condition:Hot forged, Heat-treatment (Normalized / Annealed / Quenched / tempered), Rough machining.
Surface Finish:Black, Peeled, Turned & Polished
Payment Term:30% advance by T\T; Balance pay before the shipment against shipping documents or irrevocable LC at sight
Technical Data:Chemical Composition, Physical Properties and Mechanical Testing according to the customer's requirement and Standard.

The steel is suited to applications where high surface pressures exist and friction is to be resisted as in the case of severely loaded gears, axles and pinions. It is used extensively in most industry sectors for applications requiring higher tensile strength.



Packing And Delivery

PackageSeaworthy package (or as customer require)
MOQ1 Pieces
Delivery30 days (can be short if we have stock)
Payment30%T/T in advanced+70% balanced;irrevocable L/C at sight
RemarksAll-risk insurance and accept the third party test
PortTianjin/Qingdao/Shanghai

Forged Alloy Steel AISI 4140 Round Bar


Equipment

We are well-equipped with 2000-Ton Hydraulic press, 15-Ton Hydraulic manipulator, various kinds of Lathe and boring machine, product range OD 200mm-800mm, Length less than 9m.

Forged Alloy Steel AISI 4140 Round Bar


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Q:The problem of dowel bars on concrete pavements?
The dowel bar is arranged according to the transverse contraction joint and expansion joint set, meaning that a transverse contraction joint and expansion joint place dowels, are not plate must be set. In general, each 200m set a expansion joint, or other road intersection, and bridge connecting point must be set up.
Q:What's the difference between round steel and other steel bars?
Strength is not the same. The low strength steel, and other steel with high strength, the diameter of the same size as compared with other steel, round steel can bear the pulling force than other reinforced small, but the plastic steel reinforced bar is stronger than the other, there is a large deformation in the break before, while the other bars in tensile deformation is the former is much smaller.
Q:Difference between round bar and other steel bars
Round steel is a solid strip of steel whose cross section is round. The specifications are expressed in millimeters of diameter, such as "50", which means a round bar of 50 millimeters in diameter.
Q:Difference between cold drawn round steel and round steel
There are different reasons for the residual stress in hot rolled and cold-rolled steel sections, so the distribution of the residual stresses is also quite different. The residual cold-formed steel section stress distribution is curved, and hot rolled steel or steel welding section on the residual stress distribution is thin.
Q:What is the diameter deviation of 12 mm galvanized round bar?
The allowable deviation of dia 12 is + 0.3mm. The name of this specification is: GB1499.1-2008, reinforced concrete, steel, first parts: hot rolled round steel bar, on the third page of the book.
Q:Why is a steel rope made of many wires rather than a round bar of steel?
It is a strand of steel that bends more easily. In general, but the tensile strength is still a single good, but many shares of a broken, will soon be found, easy to change in time, or a broken, immediately out of the accident.
Q:Difference between forging and round steel
A forging is a process in which a metal is heated and shaped by plastic deformation or a desired compressive force is applied. This force is typically achieved by using a hammer or pressure. The casting process constructed a fine grain structure and improved the physical properties of the metal. In the practical use of parts, a correct design allows the particles to flow in the direction of the main pressure.
Q:12 of the diameter of the round steel can be M12 out of the thread is not
It depends on your material straight straight, generally should be right, you check the metric thread specification table, there is large size can be much, I think you are a little round a little better, so that you may get the car, do not appear to have a side material shortage phenomenon
Q:What is the difference between a circle and round steel continuous casting
Round steel drawn from a continuous casting is called a round billet; the rolled round steel is called a bar.
Q:Lightning protection earthing zinc plating flat iron and round steel welding method, need to flat iron wrapped in round steel outside welding?
Don't need, but the welding seam area not less than round or flat between the relatively small cross section, the weld to coated with anticorrosive paint. Generally speaking, the grounding part does not use steel, galvanized L type flat iron good effect (copper strip and galvanized L type flat iron is not much, just life is long, but the cost is much higher), round only used as grid wiring.

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