Hot Forged QT AISI 4140 Alloy Steel Round Bar

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
100 m.t.
Supply Capability:
50000 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,BV,IBR,RoHS,CE,API,BSI,UL
Thickness: 16-300mm Length: 6m-12m Net Weight: 2mt

Product Description:

Hot Forged QT AISI 4140 Alloy Steel Round Bar

 

Product Description of Hot Forged QT AISI 4140 Alloy Steel Round Bar

1. Steel grade: ASTM4140, SCM440, 42CrMo, DIN1.7225

2. Length: 6M-12M
3. Diameter: 16mm-300mm

4. Product range: round bar, flat bar, square bar

5. Technique: Hot rolled, forged, cold drawn

 

Specification of Hot Forged QT AISI 4140 Alloy Steel Round Bar

Material

       ASTM4140

Round bar

Dia(mm)

16-300mm

Process

EAF + LF + VD + Forged + Heat Treatment (optional)

Length (mm)   

Max 12m

Heat treatment

Normalized / Annealed / Quenched / tempered

Flat bar

Thickness(mm) 

8-500mm

Delivery condition

Hot forged +Rough machined (black surface after Q/T)+ Turned (optional)

Width(mm)

70-200mm

Test

Ultrasonic test according to SEP 1921-84 D/d

Length (mm)   

Max 12m

 

Chemical Composition of Hot Forged QT AISI 4140 Alloy Steel Round Bar

C

Si

Mn

Cr

  Mo

 P

S

0.38~0.43

0.15~0.35

0.75~1.00

0.8~1.1

0.15~0.25

≤0.035

<0.04< td="">

 

Photo Show of Hot Forged QT AISI 4140 Alloy Steel Round Bar

Hot Forged QT AISI 4140 Alloy Steel Round Bar

Packing and Delivery:

Packing in bundle package, or as customer's requirements.

Delivery Detail: 45 days after receiving the deposit.

 

Usage and Applications of Hot Forged QT AISI 4140 Alloy Steel Round Bar

1. Steel round bar is used in a large number of architectural and engineering structures. Or it can be used in construction of plants for the production of steel house frames, high-voltage transmission towers, bridges, vehicles, boilers, containers, ships, etc.

2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.

3. Some special material steel round bar can be used for main shaft of steamer, hummer shank, with big section and supper force.


Company Information

CNBM International Corporation is the most important trading platform of CNBM group.

Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.

Astm 615 Bs4449 B500B Deformed Steel RebarsAstm 615 Bs4449 B500B Deformed Steel Rebars 

 

F A Q

1, Your advantages?

     professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale

2, Test & Certificate?

      SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem

3,  Factory or Trading Company?

      CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.

4, Payment Terms?

    30% TT as deposit and 70% before delivery.

    Irrevocable L/C at sight.

5, Trading Terms?

    EXW, FOB, CIF, FFR, CNF

6, After-sale Service?

     CNBM provides the services and support you need for every step of our cooperation. We're the business partner you can trust.

     For any problem, please kindly contact us at any your convenient time.

We'll reply you in our first priority within 24 hours.

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Q:How many roots are there in a standard ton of steel and how many meters are there in a steel bar?
The general drawing bar is 6 meters, some ribbed bars 9 meters and 12 meters two tons of steel; a number of roots can not say, can be 1 or 100 roots, the length of thickness do not know how to tell you how many tons of reinforced root ah.
Q:Which is stronger, steel pipe or round steel? Which is good at bending?
Of resistance to shearing, of course, of high round steel, generally used with steel tubes (light weight and material saving) for transmitting torque
Q:How is the copper wire and galvanized round steel connected during the construction of the lightning protection device?
Generally, the lightning protection devices of buildings are divided into two major categories: external lightning protection devices and internal lightning protection devices. The external lightning protection device consists of a lightning receiver, a lead off line and a grounding device, namely the traditional lightning protection device. Internal lightning protection device is mainly used to reduce the lightning current inside the building and electromagnetic effects, such as the use of electromagnetic shielding, equipotential connection and installation of surge protection device (SPD) and other measures to prevent the harm caused by lightning electromagnetic pulse.
Q:Special steel bar steel products used to do what
Carbon tool steel is high carbon steel basically contains alloy elements, the carbon content in the range of 0.65% ~ 1.35%, the production of low cost, easy to obtain raw materials, good machinability, after treatment can obtain high hardness and high wear resistance, so it is widely used in steel, used to manufacture all kinds of cutting tools, mold, measuring.
Q:Can the same grade steel instead of round bar be ok?
The above analysis, threaded steel than round steel performance is good, in general circumstances can be replaced.
Q:4145H round steel is equivalent to the domestic brand?
42CrMo steel is ultra high strength steel, high strength and toughness, hardenability is also good, no obvious temper brittleness, after quenching and tempering treatment have high fatigue limit and anti shocksand low temperature impact toughness. The steel is suitable for making large and medium plastic moulds with certain strength and toughness.
Q:Is round steel bar round steel?
NoRound steel bars refer to hot rolled round steel bars for reinforced concrete. Round bars include high-quality carbon structural steel, round steel, ordinary carbon structural steel round bars, steel bars for prestressed concrete, etc.. Although the shape is round, but the material is different, so steel and round bar is two yards.
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:Is steel bar round wire? What's the difference? What are the main applications of wire rod?
The difference between steel and other steel: 1 is not the same, round shape light garden, no pattern without ribs, other steel surface appearance is engraved or ribbed. Bond thus causing steel and concrete, and the bond strength of steel and concrete. The other 2 ingredients are not the same, (a steel bar) belongs to the ordinary low carbon steel, alloy steel reinforced many other. 3 strength is not the same. The low strength steel and other steel with high strength, i.e., 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, larger the deformation in the break before, while the other bars in the break before the deformation is much smaller.
Q:Which is hard, round steel or screw steel?
The difference between steel and other steel: 1 is not the same, round shape light round, no pattern without ribs, other steel surface appearance is engraved or ribbed, cohesive force that cause steel and concrete, and the bond strength of steel and concrete in the other. 2 ingredients are different, round steel (grade a steel) belongs to ordinary low carbon steel, and other steel bars are mostly alloy steel. 3 strength, steel and other steel with high strength low strength, namely, 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, and it reinforced the deformation the break before the much smaller.

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