Quenched and Tempered Steel SAE4140 SAE4145 SAE4340 SCM440 42CrMoS4 708M40 Steel Round Bar

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Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
30 m.t.
Supply Capability:
10000 m.t./month

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Product Description:

Quenched and Tempered Steel SAE4140 SAE4145 SAE4340 SCM440 42CrMoS4 708M40 Steel Round Bar                                                 

Products Details 

1. Chemical Composition and Mechanical Properties(In Quenched & Tempered State)

Material

4140

Chemical Composition

Mechanical Properties(In Quenched & Tempered State)

C

0.38-0.45

Tensile strength(MPA) 

≥1080

Si

0.17-0.37

Yield strength (MPA)

≥930

Mn

0.50-0.80

Elongation(δ5/%)

12

Cr

0.90-1.20

Reduction in Area (ψ/%)

45

Mo

0.15-0.25

Impact  (J)

63

P

≤0.035

 

Hardness  

 

≤217HB

S

≤0.035

Cu

≤0.30

Ni

≤0.30

 

2. Product Application Areas

Our products have been used in all kinds of areas, such as aviation,aerospace,navigation,nuclear energy,chemical industry,electronic information,achine manufacture, petrochemical, automotive,instrument and meter, Communication ,transportation, and medical instruments, etc.

 

3. Similar steel grade & equivalent steel materials

USA

Japanese

Gemany

British

France

International

Chinese

ASTM&AISI&SAE

JIS

EN DIN

EN BS

EN NF

ISO

GB

4140

SCM440

42CrMo4

1.7225

42CrMo4

1.7225

42CrMo4

1.7225

------

42CrMo

 

Product Sales Information

Material

4140 steel round bar

Size

Diameter:20mm-1000mm

Length:500mm-6000mm

Origin place 

Made In China

Delivery Condition

Hot rolled,cold drawn,forged

Surface require

Black,grinding,bright,polish

Heat treatment

Quenched,Tempered,annealed

Packing

seaworthy packing ,wooden case ,carton,woven bag or at client's requires

Delivery time

In 10-50 days

Trade Term

EXW,FOB,CIF

Payments

T/T or L/C at sight

Port

China main Port,such as shanghai,Dalian,Shenzhen port.

MOQ

1 Ton

 

Company Main Products

Alloy Steel

4140, 4142, 42CrMo4, 1.7225, SCM440, 4130, SCM430, 25CrMo4, 1.7218, 34CrNiMo6,

1.6582, 4340, SNCM439, 36CrNiMo4, 1.6511, SACN645, 1340, SMn438, SNC236,

Tool Steel

H13, 1.2344, SKD61, D2, SKD11, 1.2379, 1.2510, 01, SKS3, 95MnWCr5, D3, SKD1, 1.2419,

SKS31, H21, SKD5, 1.2581, P20, 35CrMo7, 1.2738, 1.2316, M2

Bearing Steel

GCr15, 52100, SUJ1, SUJ2, 100Cr6, 1.2067, 55C, 8620, 4320, 9310, 440C, M50

Spring Steel

9260, SUP6, SUP7, 1.7108, 54SiCr6, 1.7102, 5155, SUP9, 1.7176, 5160, 1.7177, 6150,

SUP10, 51CrV4, 1.8159

Stainless Steel

321, sus321, 1.4541, 304, SUS304, 1.4301, 410, SUS410, 1.4006, 420, 1.4021, 1.4028,

434, 1.4113, 316L, SUS316L, 1.4435, 630, 1.4542, 431, 1.4057,

 

Products Show 

 


Application 

Carbon Steel

 Mold bottom,   Plastic mold,   Construction machinery parts

 Automobile parts,   Security grills,   Screens,  Construction

 Bearing Steel  Aerospace,   Navigation,   Nuclear energy,   Chemical industry

 Electronic information,   Petrochemical,   Instrument and meter

 Transportation 

 Cr-Mo Steel  Mechanism & Fasteners gear,    Stressed components for vehicles 

 Engines and machines,    Parts of larger cross-section

 

Gear Steel

All kinds of gears,   Statically and dynamically stressed component for vehicles

Engines and machine,   Larger cross-section parts,   Crankshafts 

 

Work Shop 

 

 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


Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:Requirements for groove welding of grade 22mm round steel and manual arc welding
Chamfer or breach can also be used in grinding machine, notice groove surface cleaning with carbon or gas cutting, consider the parent material selection process, such as carbon will carburizing etc.
Q:What's the difference between bar and round bar?
Bars can be either round or square or six sides.Another argument is that bars usually refer to short ones. The rounds are not cut, usually 6 meters long supply.
Q:What kind of steel is used for anchor bolt material? What's the quality of anchor bolt material?
The anchor bolt can be divided into fixed anchor bolt, movable anchor bolt, expansion anchor, anchor bolt and bond anchor bolt. According to the different shapes, they are divided into: L type embedded bolt, 9 type embedded bolt, U type embedded bolt, welding pre embedded bolt, bottom plate embedded bolt
Q:Is there a steel bar of 6 diameter on the market?
Round 6 steel is very common on the market. A round bar with a diameter of six.
Q:Are lightning checks required for galvanized steel, flat steel and round steel?
No, when purchasing hot galvanized round steel and flat steel, please offer the factory certificate and inspection certificate.
Q:What are the differences between the products made of wrought round steel and hot rolled round steel and tested by mechanical testing after heat treatment?
The longitudinal and transverse properties of the free forging or hammer forgings are relatively small, the banded structure is not obvious, and the plastic inclusions are less deformedIt is not suitable to use rolled material for the workpiece with higher requirement of transverse or tangential performanceSampling position should be the same, usually in accordance with standards or technical requirements, such as vertical performance of a three pull, take at 2/3R
Q:Is steel bar round wire? What's the difference? What are the main applications of wire rod?
45# 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.45# round bars are divided into three kinds: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of them: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. They are more than 25 millimeters of round steel. They are mainly used in the manufacture of mechanical parts or seamless steel tube billets.
Q:How is the copper wire and galvanized round steel connected during the construction of the lightning protection device?
Grounding device is an important component of lightning protection device. The earthing device releases the lightning current to the earth, and limits the lightning protection device to the ground voltage not too high. In addition to the independent lightning rod, the grounding device can be shared with other grounding devices on the premise that the grounding resistance meets the requirements.
Q:What is the diameter deviation of 12 mm galvanized round bar?
It is widely used in hardware, building, automobile, shipbuilding, petrochemical, machinery, medicine, food, electricity, energy, aerospace and other architectural decoration. The most extensive machining of general machine parts, general rod type steel parts, CD pole, bolt, nut.
Q:The difference between round face and round bar steel on concrete?
Round steel is a solid strip of steel whose cross section is round. 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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