AISI 5140 Alloy Steel Round Bars

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Shanghai
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TT OR LC
Min Order Qty:
30 m.t.
Supply Capability:
120000 m.t./month

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Product Description:

ASTM 5140 Alloy Steel Round Bar

 

Specification 

Chemical Composition

Mechanical Properties (In Quenched & Tempered State)

C

0.37-0.44 %

Tensile strength(MPA) 

≥980(100)

Si

0.17-0.37 %

 Yield strength (MPA)

≥785(80)

Mn

0.50-0.80 %

 Elongation (δ5/%)

≥9

Cr

0.80-1.10 %

 Reduction in Area (ψ/%)

45

Ni

≤0.30 %

 Impact  (J)

47

P

≤0.035 %

 Impact toughness value αkv (J/cm2)

≥59(6)

S

≤0.035 %

 Hardness 

≤207HB

Cu

≤0.030 %

 

Detailed Information

1, Standard: GB, ASTM, AISI, SAE, DIN, JIS, EN

2, Produce Process: smelt iron - EAF smelt billet - ESR smelt billet - 

                                     hot rolled or forged to get the steel round bar and plate

3, Heat Treatment: annealing, normalizing, tempering, quenching

4, Surface Treatment: Black, Polished, Galvanized

5, Quality Assurance: We accept third party inspection for all orders. 

     You can ask testing organizations such as SGS, BV, etc. to test our products before shipping.

 

Products Show

AISI 5140 Alloy Steel Round Bars

 

Product Overviews 

Product Name

Typical Grades

Diameter(mm)

Standard adopted

Carbon Steel

20 (1020/S20C/C22)

 

Ø16-Ø300

 

 

 

 

 

GB/SAE/JIS/DIN

40 (1040/S40C/C40)

45 (1045/S45C/C45)

Bearing Steel

GCr9 (51100/SUJ1)

 

Ø12-Ø250

GCr15 (52100/SUJ2/100Gr6)

GCr9SiMn (A485-Gr.1/SUJ3)

Cr-Mo Steel

20Cr (5120/SCr420H/20Cr4)

 

Ø12-Ø250

40Cr (5140/SCr440/41Cr4)

42CrMo(4140/SCM440/42CrMo4)

Gear Steel

20CrNiMo

 

Ø16-Ø600

20CrMn(5115/SMnC420/20MnCr5)

20CrNiMo(8620/SNCM220/20CrMiMo2)

 

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

 

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Q:Three - grade thread Phi 10 steel can replace a grade Phi 12 round bar? Which elder knows, trouble pointing.
Notes on reinforcement replacement1, steel replacement, to understand the design intent, the important components of the steel replacement, with the consent of the design unit (the actual: to change the design units should be agreed).2, steel replacement, should meet the minimum reinforcement ratio requirements and reinforcement structure (such as minimum steel reinforcement diameter, spacing, root number, anchorage length, etc.) provisions. The bar as possible with the original design of root number.3, crack resistance requirements of the components (such as crane beam, truss bottom chord, etc.) with smooth steel (not reinforced grade) instead of rebar.4, do not change the effective height of the component.
Q:What is the difference between the heat treatment of cold drawn round steel and the heat treatment of wrought round steel?
Solution heat treatment: the alloy is heated to a single phase at high temperature to maintain constant temperature, so that the excess phase is fully dissolved in the solid solution, and then cooled rapidly to obtain the heat treatment process of supersaturated solid solution.
Q:Difference between forging and round steel
The castings need to be uniform in each piece without any porosity, excess space, inclusions, or other defects. The component produced by this method has a high ratio of strength to weight. These elements are usually used in aircraft structures.
Q:12mm Round steel, the material is Q235, the maximum weight can bear?
Standard Specification for hot rolled round steel is 5.5-250 mm. Among 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: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:Weight algorithm of round steel
1, the appearance is different, round steel appearance of round, no grain without ribs, other steel surface appearance has carved or ribbed, this causes the round bar and concrete bonding force is small, and other steel and concrete bonding force.2 ingredients are different, round steel (grade a steel) belongs to ordinary low carbon steel, and other steel bars are mostly alloy steel. 3 strength, steel and other steel with high strength low strength, namely, diameter of the same size as compared with other steel, round steel can bear the pulling force than other reinforced small, but the plastic steel reinforced bar is stronger than the other, there is a large deformation in the break before, and it reinforced the deformation the break before the much smaller.
Q:What kind of nuts do you need for round 20 rounds?
Common materials for 301, 304, 303, 316, 316L, 304L, 321, 2520, 201, 202 and so on. Specifications are expressed in 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. Standard Specification for hot rolled round steel is 5.5-250 mm.Stainless steel round bar has a broad application prospect, and is widely used in hardware, kitchenware, shipbuilding, petrochemical, machinery, medicine, food, electricity, energy, aerospace and other architectural decoration. Equipment, chemicals, dyes, paper making, oxalic acid, fertilizer, etc.; equipment for photography, food industry, coastal areas, ropes, CD poles, bolts, nuts, etc..
Q:How to make the round welds on flat steel flat and qualified?
If it is full weld, for strong, don't groove. There must be no problem with the welding. If you hit the groove, it will deform. When welding, you should do spot welding and diagonal welding. I think you should be able to understand this, but I don't know what you are using for it,
Q:Why is the round bar bent?
In fact, the stress and deformation complex around reinforced concrete, bond stress varies with grip length of the rebar so bond strength with steel type, shape and position of the embedded in concrete, different direction and change, is also related to concrete strength, concrete compressive strength the higher the strength, the bond strength is generally determined by R=P/3.14dL. P for pullout force, D, rebar diameter, L, steel embedment length.
Q:Is there any technique for welding round steel?
Welding skills:2.1, to determine the best welding position, the group of good welding flat, easy to rotate welding, the weld pool is always in flat position, note the rod angle at 70 degrees.2.2, the welding workpiece in continuous continuous rotation, to control the size of the weld pool at the end of each lap weld slag, cleaned, and then welding together, the thickness of each layer is about 2mm, until the full fill slope has so far.

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