SCM440 SCM415 SAE4140 Steel Round Bar /AISI 4140 Steel

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China main port
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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:

SCM440 SCM415 SAE4140 Steel Round Bar /AISI 4140 Steels       

1. Dia:12mm-300mm

2. Standard Performed: ASTM A29/A29M-04

3. Equal Standard:

    America Standard: AISI4140

    International Standard: 42CrMo4

    Japan Standard: SCM440

    Germany Standard: 42CrMo4

4. Chemical composition:

Grade

C

Si

Mn

P

S

Ni

Cr

 Mo

 Cu

 Al

AISI4140

0.38

0.41

0.15

0.35

0.85

1.00

 Max

0.015

 Max

0.040

 Max

0.25

0.80

1.10

0.15

0.25

 Max

0.35

 0.012

 0.030

5. Grade: ASTM A29  4140  42CrMo  SCM440 

    Hardness:217HB  

    Tensile  strength:1080(110)MPA  

    Yield  strength: 930(95)MPA 

    Elogation: 12%  

    Reduction of area: 45%   

    AKV(impact  value): 63J


SCM440 SCM415 SAE4140 Steel Round Bar /AISI 4140 SteelSCM440 SCM415 SAE4140 Steel Round Bar /AISI 4140 Steel

SCM440 SCM415 SAE4140 Steel Round Bar /AISI 4140 SteelSCM440 SCM415 SAE4140 Steel Round Bar /AISI 4140 Steel


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Q:On the market, 8mm Round Bar is not 9 meters a root? How much does it weigh about 300 meters? How much does it cost?
Method of calculating reinforcement weight, unit length, weightD*d*0.00617= (6 in 7)For example, 8mm steel 8*8*0.00617=0.39488 take 0.395Round steel and rib are calculated the same wayRound bar 8 is rolled up, usually between 2~4 tonsYou'll have to straighten it up, straighten it up, and straighten it up
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 to distinguish between cold plating and hot rolled round steel?
Cold galvanized profiles: cold galvanized is electroplating, is absorbed by the charge, the charge is concentrated in the edge, angle and other cutting-edge, so the inner surface and recess will not be plated phenomenon. The surface of the steel is relatively smooth and bright.Hot dip galvanized bar: hot dip galvanizing is to remove oil, pickling, dipping and drying into the molten zinc bath for a certain period of time. The appearance was galvanized slightly rough, silvery white appearance, easy to produce and process water a few drops of tumor, especially in the one end of the workpiece is more obvious.Galvanized quality certificate must be provided for hot-dip galvanized sections.
Q:What's the difference between Q345 round steel and No. 45 round steel material?
Q345: it is a kind of manganese steel (16Mn), yielding strength of 345, good welding performance, commonly used in structural parts welding, low carbon steel, can not be used for quenching or quenching and tempering.No. 45 Steel: high quality carbon structural steel, medium carbon steel. Can be used for quenching or tempering.
Q:Are the bolts for the round bar or round steel?
If in some large-scale concrete component under the condition of some units to prevent run mode is used, the bar, the bar is the best quality, and the tensile strength is great, because the price advantage is not, it is generally not recommended to use the bar as a pull screw.
Q:4145H round steel is equivalent to the domestic brand?
Round steel is a solid strip of steel whose cross section is round. Its specifications are expressed in diameter, in units of millimeters (mm), such as "50mm", which means a diameter of 50 millimeters of 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 steel larger than 25 millimeters, mainly used for making machines.
Q:What kind of material is the first round steel?
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:How to make the round welds on flat steel flat and qualified?
If it is full weld, for strong, don't groove. There must be no problem with the welding. If you hit the groove, it will deform. When welding, you should do spot welding and diagonal welding. I think you should be able to understand this, but I don't know what you are using for it,
Q:What is the tensile strength of Q235 round steel?
Nominal diameter 8-20 mm, yield point is greater than or equal to 235MPa, tensile strength greater than or equal to 370MPa, elongation is greater than or equal to 25%.
Q:What is the diameter deviation of 12 mm galvanized round bar?
Hot galvanized round steel refers to the cross section of round solid steel. The specifications are expressed in millimeters of diameter, such as "50", which means a round bar of 50 millimeters in diameter.

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