AISI 4340 Forged Steel Round Bars System 1

AISI 4340 Forged Steel Round Bars System 2

AISI 4340 Forged Steel Round Bars System 3

AISI 4340 Forged Steel Round Bars System 4

AISI 4340 Forged Steel Round Bars

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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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Chemical Composition	Mechanical Properties (In Quenched & Tempered State)
C	0.38-0.43 %	Tensile strength(MPA)	≥980(100)
Si	0.15-0.35 %	Yield strength (MPA)	≥835(85)
Mn	0.60-0.80 %	Elongation (δ5/%)	≥12
Cr	0.70-0.90 %	Reduction in Area (ψ/%)	≥55
Ni	1.65-2.00 %	Impact (J)	≥ 78
P	≤0.035 %	Impact toughness value αkv (J/cm2)	≥98(10)
S	≤0.040 %	Hardness	≤269HB
Mo	0.20-0.30 %

Standard	ASTM A29/A 29M-05
Grade	4340
MOQ	1 Metric Ton
Diameter	8mm~1500mm
Length	6m,12m or as required.
Diameter Tolerance	As required
Condition of delivery	Hot rolled,Cold Rolled or as required.

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

Q:Are steel round bars suitable for plumbing applications?: Yes, steel round bars are suitable for plumbing applications. They are commonly used in plumbing systems for their strength, durability, and resistance to corrosion. Steel round bars can be easily shaped and welded to create various plumbing components such as pipe fittings, supports, and brackets. Additionally, their high tensile strength makes them capable of withstanding the pressure and load requirements in plumbing systems.

Q:Can steel round bars be used for valve stem applications?: Yes, steel round bars can be used for valve stem applications. Steel round bars are commonly used in various industrial applications due to their high strength and durability. In valve stem applications, steel round bars are often used to provide stability and structural support to the valve stem, ensuring smooth operation and long-term performance. Additionally, steel round bars can be easily machined and fabricated to meet specific requirements, making them a versatile choice for valve stem applications.

Q:Can steel round bars be used for making fuel system components?: No, steel round bars are not suitable for making fuel system components as they lack the necessary corrosion resistance and compatibility with fuels.

Q:How can steel round bars be protected against rust?: Steel round bars can be protected against rust by applying a protective coating such as paint, galvanizing, or epoxy. Regular maintenance, including cleaning and applying rust inhibitors, is also crucial to prevent rust formation. Additionally, storing the bars in a dry environment and avoiding exposure to moisture can help minimize the risk of rusting.

Q:What is the difference between a centerless ground and a hot rolled steel round bar?: The main difference between a centerless ground steel round bar and a hot rolled steel round bar is the manufacturing process. Centerless grinding involves removing material from the bar's outer diameter using abrasive wheels, resulting in a precise and smooth finish. On the other hand, hot rolling involves heating the steel and passing it through a series of rollers to shape it into a round bar, often resulting in a rougher surface. Additionally, centerless ground bars tend to have tighter dimensional tolerances and better surface quality compared to hot rolled bars.

Q:Are steel round bars available in different colors?: Steel round bars typically come in a metallic grey color, which is the natural color of the steel material. However, it is possible to find steel round bars in different colors through various processes such as powder coating or painting. These processes involve applying a layer of paint or powder to the surface of the steel, which can be done in a wide range of colors. This allows for customization and aesthetic considerations, especially in applications where the appearance of the steel is important. It is important to note that the availability of different colors may vary depending on the supplier or manufacturer.

Q:How do you know the diameter and weight of a round bar?: The weight divided by the length is the bottom area of 2, Wu R - is the bottom area. The diameter is equal to 2R

Q:Can steel round bars be used for making electrical components?: Whether steel round bars can be used for making certain electrical components depends on the specific requirements and applications. Steel is a versatile material that possesses good electrical conductivity and high durability, making it well-suited for a variety of electrical applications. However, when it comes to components that necessitate specific electrical properties or insulation, copper or aluminum may be more commonly utilized. Furthermore, in order to prevent corrosion or enhance electrical conductivity, it may be necessary to subject steel round bars to surface treatments or coatings. Ultimately, the appropriateness of utilizing steel round bars for manufacturing electrical components should be evaluated in accordance with the specific requirements and regulations of the intended application.

Q:What is the difference between a forged and a ground steel round bar?: A forged steel round bar and a ground steel round bar differ primarily in their manufacturing processes and resulting characteristics. A forged steel round bar is created by heating the steel to a high temperature and then shaping it using mechanical pressure, usually through a hammer or press. This process aligns the steel's grain structure, making it stronger and more durable. Forged steel round bars are known for their excellent strength, impact resistance, and overall toughness. They are commonly used in applications that require high strength, such as heavy machinery, automotive parts, and construction equipment. On the other hand, a ground steel round bar is manufactured through a grinding process. After the steel is initially shaped, it undergoes precision grinding to achieve the desired dimensions and surface finish. This process removes any imperfections or irregularities on the surface, resulting in a smooth and polished appearance. Ground steel round bars are often used in applications that require precise dimensions, such as shafts, axles, and precision tools. In summary, the main difference between a forged and a ground steel round bar lies in their manufacturing processes and resulting properties. A forged steel round bar offers superior strength and toughness due to its grain structure alignment, making it suitable for heavy-duty applications. On the other hand, a ground steel round bar is known for its precise dimensions and polished surface finish, making it ideal for applications that require precision.

Q:What is the maximum nickel content allowed for steel round bars?: The maximum nickel content allowed for steel round bars typically varies depending on the specific grade and industry standards. However, in general, the nickel content in steel round bars is usually limited to around 2-3% to maintain desirable mechanical properties and prevent excessive hardening.

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