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:What is the difference between 40Cr round steel and 40Cr forging parts?
But 40Cr forgings are objects that are subjected to pressure by plastic deformation to shape a desired shape or suitable compressive force. (usually done by using hammers or pressure). The casting process constructed a fine grain structure and improved the physical properties of the metal.
Q:Requirements for groove welding of grade 22mm round steel and manual arc welding
If not on the lathe, in the groove on the round bar with gouging or cutting gun, docking form X type double sided bilateral docking, blunt edge 2mm root gap 2mm welding, welding side sincere one or two seam, flip the workpiece on the other side of a full weld groove, flip weld residual,
Q:Embedded bolts M24 why use M25 round steel?
Why does the embedded bolt M24 use M25 round steel? Because there is no 24 of the bar specifications, only 25
Q:How to determine the welding seam height of steel plate and steel bar?
If the end of the vertical plane and the steel plate welding, welding angle as the bar diameter and the general welding height is 0.7 times the diameter of the arc can be reinforced; if the length direction of the surface of steel plate and steel welding, 2 side fillet weld cracks in the welded steel plate and steel between the full and round steel weldment the maximum diameter of arc phase can be flat.
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 are the scientific names of round bar and screw steel?
Round steel and thread steel are just popular terms for steel reinforcement in construction. In the construction, steel by HPB235, belonging to the carbon steel, steel is Q235; steel by HRBxxx, the steel is the most commonly used HRB335 and HRB400, they are called hot rolled alloy steel, cold steel lines, is heat treated in a bar.
Q:The difference between round steel and screw steel
The difference between round bar and round bar is that the surface has longitudinal ribs and transverse ribs, usually with two longitudinal ribs and transverse ribs uniformly distributed along the length direction. The rebar is a kind of small section steel, mainly used for the skeleton of reinforced concrete construction members. In use, some mechanical strength, bending deformation property and welding performance are required. The raw steel billet for the production of threaded steel is carbon structural steel or low alloy structural steel which is treated by calm melting, and the finished steel bar is delivered in hot rolling forming, normalizing or hot rolling state.
Q:Difference between cold drawn round steel and round steel
Cold formed steel allows partial buckling of the cross section, thus taking full advantage of the post buckling capacity of the member, while the hot-rolled section does not allow partial buckling of the cross section.
Q:What kind of nuts do you need for round 20 rounds?
The nut is connected to mechanical equipment parts, through the inside of the thread, the same specifications of nuts and bolts to connect together, such as M4-P0.7 and M4-P0.7 only bolt nut series connection (nut, M4 nut diameter is about 4mm, 0.7 fingers between the two thread distance of 0.7mm); US made products as well, such as screw nut only with the 1/4-20 1/4-20's collocation (1/4 refers to the nut inner diameter is about 0.25 inches, 20 inches each, 20 teeth).Self locking nut, lock nut, locking nut, four claw nut, the nut is screwed into the nut, screw rod nut insurance connecting nut cap nut six self-locking angle of anchor bolt with nut, six special angle crown thin nut eyenut.
Q:20# difference between round bar and A3 round bar, can they be used separately?
20# rounds are plain carbon steel, as well as 10#, 20#, 45#, etc.A3 round bar is Q235, grade is ABCDE, etc., commonly used is Q235BIn use performance, 20# hardness is strong, but the elasticity is bad, welding performance is poorA3 hardness is less, but good elasticity, good welding performanceAs for specific can not be replaced, mainly depends on the use of places.

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