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:How about the difference between round steel and shaped steel? Where are they mainly used?
Low carbon steel Q235 steel hot rolled into a round, mainly used in concrete. Medium and high carbon tool steels are wound into large diameter round bars and are used in the machinery industry for cutting into components.
Q:How is the copper wire and galvanized round steel connected during the construction of the lightning protection device?
Copper wire and galvanized steel bars can be directly welded together, do not pay attention to;Lightning protection device refers to the lightning receiver, the lead wire, grounding device, surge protector (SPD) and other connected conductor sum.
Q:Use of stainless steel round bar?
Stainless steel round bar is a kind of long material, and it is also a kind of bar. The so-called stainless steel round bar refers to the cross section is even round long material, generally about four meters long. It can be divided into light and black. The so-called light circle, refers to the smooth surface after processing and quasi rolling; and the so-called, refers to the surface of the black, coarse, and direct rolling.
Q:How many positive and negative tolerances are allowed for round steel GB?
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. Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Among them, 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. They are more than 25 millimeters of round steel. They are mainly used in the manufacture of mechanical parts or seamless steel tube billets
Q:How do you know the diameter and weight of a round bar?
Round is a round, the quality of its G (in grams) is equal to the volume multiplied by the density of 7.85 steel, and its volume is equal to the bottom area multiplied by the degree of L (in cm), then the bar diameter of d=4 * G / L / 7.85 / 3.14 value points
Q:45# what are the main rounds for?
45# round bars are divided into three kinds: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of them: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. They are more than 25 millimeters of round steel. They are mainly used in the manufacture of mechanical parts or seamless steel tube billets.
Q:What's the difference between bearing steel and round steel?
Bearing steel refers to the steel used to make bearings. Round steel is generally referred to as round bar steel. One refers to the material, and the other refers to the profiles. Such as bearings, needle roller raw material is round steel, but also bearing steel.
Q:Is round steel round steel?
Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of which: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. Round bars larger than 25 millimeters are used mainly for making mechanical parts or for seamless steel tubes.
Q:Is HRB335 round steel or rib steel?
HRB335 is the hot rolled ribbed steel, two steel.This is the representation of the mechanical grade and dimension of threaded steel.
Q:What is the reason that the diameter 130-45 round steel will break after welding?
You say this is a better situation, generally in a few days after welding on the crack, the most afraid of the key parts, to be a major accident. No. 45 steel can not be welded, such as welding, it is necessary to preheat before welding and after welding heat treatment.

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