Carbon Alloy Steel Round Bars AISI 4140

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Min Order Qty:
30 m.t.
Supply Capability:
10000 m.t./month

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Product Description:

Carbon Alloy Steel Round Bars AISI 4140     

Technical Paramenters 

Chemical Composition

Mechanical Properties (In Quenched & Tempered State)

C

0.38-0.43 %

Tensile strength(MPA) 

≥1080(110)

Si

0.15-0.35%

 Yield strength (MPA)

≥930(95)

Mn

0.75-1.00 %

 Elongation (δ5/%)

≥12

Cr

0.80-1.10 %

 Reduction in Area (ψ/%)

45

Ni

≤0.030 %

 Impact  (J)

 63

P

≤0.030 %

 Impact toughness value αkv (J/cm2)

≥78(8)

S

≤0.040 %

 Hardness 

≤217HB

Cu

≤0.030 %



Mo

0.15-0.25 %




Products Show 

 


Standard Grades  

 

Werkstoff-NO.

DIN-EN

DIN-Abbreviation

SAE/AISI

1.1545

10096

C 105 W1

W110

1.1730

10096

C 45 W

--

1.2063

10096

145Cr6

-

1.2067

10096

100Cr6

L1/L3

1.2080

10096

X210Cr12

D3

1.2101

10096

62SiMnCr4

-

1.2210

10096

115CrV3

L2

1.2363

10096

X100CrMoV5 1

A2

1.2379

10096

X155CrVMo12

D2

1.2419

10096

105WCr6

-

1.2436

10096

X210CrW12

D6

1.2510

10096

100MnCrW4

O1

1.2542

10096

45 WCrV7

S1

1.2550

10096

60WCrV7

S1

1.2601

10096

X165CrMoV 12

-

1.2721

10096

50 NiCr13

-

1.2826

10096

60MnSiCr4

-

1.2842

10096

90MnCrV8

O2







Chemical Elements:











Grade

C

Si

Mn

P≤

S≤

Cr

Mo

V

W

OTHER

1.2344/SKD61/H13

0.35-0.42

0.80-1.20

0.25-0.50

0.03

0.02

4.80-5.50

1.00-1.50

0.80-1.15


Cu≤0.25 Ni≤0.25

4Cr5MoSiV1

0.32-0.42

0.80-1.20

0.20-0.50

0.030

0.030

4.75-5.50

1.10-1.75

0.80-1.20



1.2379/D2/SKD11

1.50-1.60

0.10-0.40

0.15-0.45

0.030

0.030

11.0-12.0

0.60-0.80

0.90-1.10



1.2510/O1/SKS3

0.85-1.0

0.10-0.50

1.0-1.40

0.030

0.030

4.75-5.50


≤0.30

0.4-0.6



1.2363/A2/SKD12

0.95-1.05

0.10-0.50

0.40-1.00

0.030

0.030

4.75-5.50

0.90-1040

0.15-0.50




4140

0.38-0.43

0.15-0.35

0.75-1.00

0.035

0.040

0.80-1.10

0.15-0.25




4340

0.38-0.43

0.15-0.35

0.60-0.80

0.035

0.040

0.70-0.90

0.20-0.30



Ni 1.65-2.00

P20/1.2330/M202

0.28-0.40

0.20-0.80

0.60-1.00

0.030

0.030

1.40-2.00

0.30-0.55





Work Shop 

 Carbon Alloy Steel Round Bars AISI 4140


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.

 


FAQ

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.


Packaging & Delivery

1, Packaging: seaworthy package or as required 

2, Delivery: 35-45 days or based on quantity


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Remaining: 4000 characters

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- Inquire about price/MOQ

Q:How can a round steel weld on a flat steel plate be flat and qualified?
On both sides of the steel and welded steel plate, each side of the weld length of 5 times the diameter of reinforcement, welding seam should be welded into a convex arc that is.
Q:Is the shear wall concealed column stirrup steel or round steel?
Round bar is the finished steel hot rolling and cooling, by ordinary low carbon steel and alloy steel under the condition of high temperature pressing, mainly used for reinforcement of reinforced concrete and prestressed concrete structure, is one of the varieties of steel used in civil engineering in the largest amount.
Q:Why is round steel more expensive than thread steel?
Round steel has a wide range of applications, many brands and different uses. Such as machining, shipbuilding and other user processing requirements are also different. Such as alloy round steel, Q345B, high carbon steel, 45#, 35#, general round Q235B, mainly material, ingredients, etc..
Q:12mm Round steel, the material is Q235, the maximum weight can bear?
Round steel: 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. Round bar is divided into three parts: hot rolling, forging and cold drawing.
Q:What is the difference between 40Cr round steel and 40Cr steel forgings?
The casting process constructed a fine grain structure and improved the physical properties of the metal. The utility model has the advantages of high strength and good plasticity, and is suitable for making important parts with large force and high requirement.The properties of forgings are superior to those of ordinary ones.
Q:What's the difference between round steel and screw steel? Which is cheaper than steel on the market these days?
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 of small round bars, commonly used as steel, bolts and various mechanical parts, larger than 25 millimeters of round steel, mainly for the manufacture of machinery parts. Round steel has many kinds of materials, such as: Q195, Q235, 10#, 20#, 35#, 45#, Q215, Q235, 304, 316, 20Cr, 40Cr, 20CrMo, 35CrMo, 20CrMnTi, 5CrMnMo, etc...
Q:What is hot rolling? What is called forging?
Hot rolling is the rolling process at which the temperature is above the recrystallization temperature, so that the finished product is better than cold rolling
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:What is the tensile strength of Q235 round steel?
According to the national standard of GB 13013-1991 reinforced hot rolled round steel bars,Q235 reinforcement
Q:Why is the round bar bent?
Round steel with hooks the aim is to increase the bond between concrete and prevent the component in the tension will be reinforced. Therefore, round bars should be 180 degrees of hook, should set up 90 degree hook ribbed bar.

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