Forged Steel Round Bar SAE8620 /C45 /42CrMo4

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5 m.t.
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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:

Forged Steel Round Bar SAE8620 /C45 /42CrMo4


SAE8620,forged steel round bar,size:90mm to 800mm,Rough turned,Normalized,Annealed, 
Quenched and Tempered.

Forged steel round bar

Steel grade:

Carbon steel:

Chinese Standard:20#,25#,35#,45#,50#,60#;

Japan Standard:S20C,S25C,S35C,S45C,S55C,S60C;

US Standard:AISI1020,AISI1040,AISI1045,AISI1050;

Europe Standard:CK15,C.22,C45,CK45,C60,CK60;C45E;


Alloy Steel:

Chinese Standad:16Mn,20Mn,30Mn2,30Mn5,40Cr,Q345D,Q345E,Q390;42CrMo,


Janpan Standard:SCM415,SCM420,SCM440,SNCM439,SNCM220; SACM645

USA Standard:SAE4140,SAE4130,SAE9840,SAE4340,AISI4145H,SAE4150,SAE8620,

Europe Standard:42CrMo4,25CrMo4,34CrNiMo6,39CrNiMo3,17NiCrMo6,18CrNiMo7-6,

S355J2G3,ASTM A105,ST52-3,16MnCr5,20MnCr5,16MnCrS5,20MnCrS5,21CrMoV511,




Tool Steel:1.2714,H13,H11,P20,SKD61;

Delivery condition:Forged+Normalized/Annealed+RoughTurned

+Quenched and Tempred;

Also can supply the finish products according the drawings;

Length:3 meters or 4 meters and up or fix length according the actually needs


Diameter tolerance:-0/+6mm Black surface  -0/+2mm Rough Turned

Steel ingot:EAF+LF+VD;

Also use ESR Process if needed;

Ultrasonic Test:According GB/T6401-91 Class 1,Class 2,Class 3;

      And GB/T6402-2008 Class 3,Class 2;

      And Sep1921 Class C/c,D/d,E/e, Or ASTM A388 Standards;

Grain Size:Better than 6;

Purity, non-metallic inclusions, mechanical properties, hardness According China or EU


Quantity:70000 Tons per year

Including Forged round bar 55000 Tons,

Forged square bars 12000Tons,

Other forgings like forged step shaft,forged hollow bars,forged rollers 3000 Tons;

Forged Steel Round Bar SAE8620 /C45 /42CrMo4Forged Steel Round Bar SAE8620 /C45 /42CrMo4

Forged Steel Round Bar SAE8620 /C45 /42CrMo4Forged Steel Round Bar SAE8620 /C45 /42CrMo4

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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.
Q:Why is a steel rope made of many wires rather than a round bar of steel?
The multi ply, in order to increase the cross-sectional area increases the tension will not suddenly broken, fine wire bend more easily, so the bending of wick core can be better, with better lubrication of steel wire rope. If it is a steel bar, it is not easy to bend, it is easy to break suddenly, and the practicability is poor.
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.
Q:Can steel bars be replaced by large screws in the concrete floor?
In theory, how big a round steel will have to replace the large thread steel, and if it is cast, then still better to use thread steel, screw steel tensile resistance than round steel by strong
Q:4145H round steel is equivalent to the domestic brand?
4145H is round steel, oil drilling steel, domestic steel, Xingcheng Special Steel, steel and other steel mills have production in the Great Wall. The industry commonly used 42CrMo instead.
Q:What kind of steel bars are used in general civil buildings?
Steel is the HRB335, the diameter of 12 to 22, 25, 28, even 32, and then rough generally appear in the mass concrete construction, not commonly used, generally below 25 is commonly used in masonry structure in rural low level below 16 is most commonly used. Used as beams, columns, main bars and stand bars, etc.
Q:Which is stronger, steel pipe or round steel? Which is good at bending?
The strength of the steel pipe is slightly lower, but its weight is light, so as long as the wall thickness is reasonable, the experienced designer uses steel pipe instead of round steel.Like me, that's it
Q:Will the three steel is steel? It is a steel bar?
Thread steel through the material is divided into two grades of steel (HRB335), three grades of steel (HRB400), which is now commonly used name, but also seismic steel (HRB400E) and so on. Grade 1 steel is wire, and the building materials are Q235 and HPB235. Other wire materials are for industrial use.
Q:How can stainless steel rounds occur? Is it a quality problem?
By the skin bubbles, surface cracks and so on. Crack and steel surface vertical, about 0.8 ~ 1.5mm, no decarburization on both sides, this is caused by the bubble caused by the subcutaneous bubble. The molten steel contains a large amount of gas. When the liquid steel is solidified, the gas is discharged to form bubbles. The outer layer of the slab near the bubble called the subcutaneous bubbles, honeycomb shaped perpendicular to the surface of the billet, billet after rolling, the bubbles inside most welding. But if the subcutaneous bubbles near the slab surface is too close, while heating because of billet surface oxidation or burning of the bubble exposed, the bubble surface is oxidized, thus it is not possible to make the steel welding, surface cracks.
Q:20 round bars are of several grades
20 round bars may be grade two steel.

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