Carbon Structural Steel Round Bars SAE1020CR

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Min Order Qty:
400 m.t.
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120000 m.t./month

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Product Description:

 Carbon Structural Steel Round Bars SAE1020CR

PRODUCT USE

1, can be used to produce various types of rivet, bolts and welding structural parts.

2, can be used to produce seamless pipes, mold, steel plate, U-steel and joist steel

 

PRODUCT MAIN POINTS

1, high quality with competitive price

2, certifictes are available

3, heat treatment specification: tempering, 910 ℃, air cooling

 

PRODUCT SHOW

Carbon Structural Steel Round Bars SAE1020CR

 

PRODUCT SPECIFICATION

1, Chemical Composition %

GradeCSiMnSPCrNiCu
SAE1020CR0.17-0.240.17-0.370.35-0.65≤0.035≤0.035≤0.25≤0.25≤0.25

2, Mechanical Properties 

Strength of Extension σbYield Strength  σsElogation δ5

Reduction of Area ψ

Hardness (no heat treatment)
≥410(42) Mpa≥245(25) Mpa≥25 %≥55 %≤156HB

 

ABOUT US

Carbon Structural Steel Round Bars SAE1020CR

Carbon Structural Steel Round Bars SAE1020CR

 

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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:Grade 1 steel is round steel, grade two steel is ribbed thread steel. Are the weight of the two units the same?
Grade two steel is ribbed steel, but the average diameter is calculated. The chemical composition of grade steel and grade two steel is different, but the density of them is the same. Therefore, the unit weight of grade 1 steel and grade two steel is the same.
Q:How to distinguish a round bar from forging? Cold drawing? Hot rolling?
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. Where: 5.5-25 mm small round steel mostly straight bundles of supply, used for steel, bolts and various mechanical parts; greater than 25 mm round steel, seamless steel pipe is mainly used for the manufacture of mechanical parts of the tube, etc..
Q:The diameter of 20 solid round steel bend into a circle, what machine bending?
Or a bar bending machine machine, the installation of a 20cm diameter on the rotating die on the line, available 20mm manual welding steel die making.
Q:The difference between 304 stainless steel round bar and bright round bar
The difference between the stainless steel round bar and the bright round steel of the same material is that the bright circle is cold rolled (or cold drawn), and the black circle is hot rolledThe processing method is different
Q:What is round steel?
Round steel is a solid strip of steel whose cross section is round. Its specifications are expressed as millimeters in diameter. For example, "50" means a round steel with a diameter of 50 millimetersRound bar is divided into three kinds of hot rolling, forging and cold drawing. The specification of hot rolled round bar is 5.5-250 millimeters. Among them, 5.5-25 rounds of small round bars are mostly supplied by straight strips. They are commonly used as reinforcing bars, bolts and various mechanical parts;
Q:How can stainless steel rounds occur? Is it a quality problem?
Cracks caused by surface folding, cracks and steel surface of 15 degrees to 75 degrees angle, about 1.5 ~ 3.5mm, tail vortex shape, slightly decarburization on both sides, decarburization layer 0.15 ~ 0.25mm, crack in the presence of oxide scales. Its macro shape is in the surface of the round steel along the rolling direction into a straight line or zigzag, continuous or intermittent appear in the partial or full length of steel. This shows that this is a folding process in the process of rolling steel. Main reasons of folding is finished before the workpiece with a handleonapot; secondly, in the process of rolling each pass from the handle, flash, serious scratch, damage, and roll ring groove wear etc., can make the product surface folding; in addition, such as the serious defect of blank, if cleaning may also be caused by improper finished folding. Therefore, the main measures to reduce or avoid folding appear: pass through reasonable design, accurate estimation of the spread, precisely adjust the position of roller groove, reduce or eliminate the finished product before rolling the handle, flash, scratches and other defects; the serious defects of the blank surface carefully cleaned.
Q:Specifications of the same kind of galvanized round bar more expensive than round steel?
The general market price than ordinary steel galvanized steel bar of your 2000-3000 dollars per ton, according to your purchase requirements, price range of relatively large fluctuations, such as whether to open a formal invoice, transport distance, purchase quantity, relationship with your level of economic development, the developed area of fierce market competition, the price is relatively low. The prices and prices of large factories and small factories are not the same. The prices of big factories are generally high, and the prices of small factories are low.
Q:How many grades of steel are round steel?
Secondly, the round steel only shows the shape of steel, all kinds of steel have round steel, it can not explain the nature and composition of steel.
Q:What kind of steel pipe is round steel?
A round bar is not a steel tube. In brief, its section is round, but it is solid, and the cross section of the pipe is hollow.

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