Carbon Alloy Steel Round Bars AISI 4140

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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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Q:Three - grade thread Phi 10 steel can replace a grade Phi 12 round bar? Which elder knows, trouble pointing.
According to the substitution of steel bars, one method, equal strength substitution, equal area substitution and equal root substitution can be obtained by substitution. Three grades of thread Phi 10, steel replaced by a grade Phi 12 of the round steel, I think it may appear: does not meet the minimum reinforcement ratio requirements and reinforcement construction regulations. Don't change it for the best. But must change, must pass the design.
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:Are steel and round steel the same thing?
Yuan steel and round steel are the same thing, they are round steel.
Q:Why can't the grounding device be replaced by steel bar instead of round steel?
Steel is known as hot rolled ribbed bar. Ordinary hot rolled steel bars are made up of HRB and the minimum yield point of the brand. H, R, and B are the first letters in English for hot-rolled (Hotrolled), ribbed (Ribbed) and reinforced (Bars) three words. Hot rolled ribbed bar is divided into two levels, HRB335 (old No. 20MnSi), three HRB400 (20MnSiV, 20MnSiNb, old No. 20Mnti), four grade HRB500 three grade.
Q:45# what are the main rounds for?
High quality carbon structural steel can be used in many and many structural steels. It is widely used and can be used as long as it does not involve corrosion, or too high strength and toughness
Q:The difference between round steel and screw 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, and more than 25 millimeters of round steel. They are mainly used in the manufacture of mechanical parts or seamless steel tube billets
Q:Q235 and mechanical properties of hot rolled steel cold drawn steel have what difference, Q235 hot rolled steel with 12 combined shearing machine has a number of very hard, the damage of the blades, why
First of all, Q235 refers to the yield strength, is a heat treatment method, commonly used in thin steel plate material,
Q:Do you need paint for roof lightning proof steel bars?
If the metal surface is coated with a thick layer of insulating paint, it will seriously affect the flashover effect. In the national standard, the metal roof is directly used as a flash receiver. The thickness of the paint used on the roof must be less than the required value. That is what it means.
Q:1, three, two, steel, wire rod, round steel what is the difference?
Steel is commonly known as hot rolled ribbed bar, belonging to the small steel steel, mainly used for steel reinforced concrete structure frame. 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:How many grades of steel are round steel?
There are many kinds of steel. They can be divided into three categories: non alloy steel, low alloy steel and alloy steel by chemical composition. Ordinary steels are mostly unalloyed steels. Their quality is divided according to the impurities in the steel, namely ordinary quality carbon steel, high quality carbon steel and special quality carbon steel three kinds. Not by category.

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