S355J2 Steel Round Bar Alloy Steel Round Bar 4140

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
100 m.t.
Supply Capability:
500000 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: 13-300mm Length: 6-12m Net Weight: 2mt

Product Description:

S355J2 Steel Round Bar Alloy Steel Round Bar 4140

 

Product Description of S355J2 Steel Round Bar Alloy Steel Round Bar 4140

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 S355J2 Steel Round Bar Alloy Steel Round Bar 4140

Material

       SCM4140

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 S355J2 Steel Round Bar Alloy Steel Round Bar 4140

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 S355J2 Steel Round Bar Alloy Steel Round Bar 4140

S355J2 Steel Round Bar Alloy Steel Round Bar 4140

Packing and Delivery:

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

Delivery Detail: 45 days after receiving the deposit.

 

Usage and Applications of S355J2 Steel Round Bar Alloy Steel Round Bar 4140

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:What's the difference between pure iron round steel and electromagnetic pure iron bar?
One thing, one thing, the same thing is round. However, in the general industry, about 30 of the habit is called bar,
Q:What are square steel, rectangular tube, angle steel or light steel?
Light steel is also a relatively vague term, generally can have two kinds of understanding. One is the current "code for design of steel structures" (GBJ 17-88) in the eleventh chapter "bar, small angle light steel structure", refers to the use of steel and light steel structure is less than L45*4 and L56*36*4 angle steel production, mainly in the lack of time for small steel structure manufacturing of reinforced concrete structure should not be used, has been basically not used, so the revised code for design of steel structures has been basically removed this tendency. The other is the "Regulations" technology of steel structure of light-weight buildings with gabled frames with light roof and wall light (also has the condition to use the masonry wall) single portal frame structure, the light here mainly refers to the enclosure is made of light material. Since the former has been cancelled soon, the meaning of "light steel" mainly refers to the latter
Q:What's the difference between round steel and carbon bound steel?
The strength of different steel strength low carbon steel, 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 and deformation in the break before, pulled off in carbon the steel is much smaller.
Q:Are more bars used in high-rise buildings?
Look at the architectural design requirements and seismic grade, light steel reinforcement is mainly stirrups, columns, beams, shear walls generally use thread steel, plate bars and distribution bars are generally cold and twisted steel bars
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:How to distinguish between cold plating and hot rolled round steel?
The difference between galvanized products: hot galvanized surface is not cold galvanized, delicate and bright, but the thickness of zinc coating, hot galvanizing is cold galvanized dozens of times. Corrosion resistance is also tens of times zinc plating.
Q:What are the differences between hot rolled stainless steel rounds and cold drawn round ones?
Hot rolled round steel, used in construction and general hardware parts processing is very common. Cold drawn round steel (do not know is not cold dial round bar). But I understand by the cold dial round bar Also mainly used in hardware parts processing and production. Such as hinge shaft core or other surface and diameter requirements of production and processing occasions.
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: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: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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