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

Ref Price:

Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

Inquire Now

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

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 resistant to chemicals?: The resistance of steel round bars to chemicals can vary depending on the specific steel type and the chemicals involved. Stainless steel round bars are well-known for their exceptional resistance to a wide range of chemicals, including acids, alkalis, and various organic compounds. This is because stainless steel contains high levels of chromium, which creates a protective oxide layer on the surface, preventing corrosion and chemical attacks. However, not all steel round bars possess the same level of chemical resistance. Carbon steel round bars, for example, are more prone to corrosion and chemical attacks compared to stainless steel. Corrosive chemicals, especially in highly corrosive environments, can affect carbon steel and cause damage. In such cases, it may be necessary to use additional protective measures, such as coatings or treatments, to enhance the chemical resistance. To summarize, stainless steel round bars provide excellent chemical resistance, whereas carbon steel round bars may require extra precautions to prevent chemical corrosion. When assessing the chemical resistance of steel round bars, it is crucial to consider the specific steel type, the type of chemical, and the environmental conditions.

Q: What is the maximum weight of a steel round bar?: The maximum weight of a steel round bar is determined by its diameter and length. Steel round bars are available in different sizes and weights, thus it is crucial to specify the dimensions to determine the maximum weight. To calculate the weight of a steel round bar, the formula weight = volume × density is utilized. The volume can be calculated as πr²h (pi multiplied by the radius squared times the height), and the density represents the specific weight of steel, which is approximately 7850 kg/m³. By inputting the suitable values, one can determine the maximum weight of a steel round bar.

Q: Are steel round bars available in different surface finishes?: Yes, steel round bars are available in different surface finishes. The surface finish of a steel round bar refers to the treatment or coating applied to the surface to enhance its appearance, protect it from corrosion, or improve its performance in specific applications. Common surface finishes for steel round bars include polished, brushed, mill finish, galvanized, and coated with materials like chrome, nickel, or zinc. These different surface finishes cater to various requirements and preferences in terms of aesthetics, protection against corrosion, and functionality in different industries and applications.

Q: What are the different types of carbon steel round bars?: There are several different types of carbon steel round bars, including low carbon steel, medium carbon steel, and high carbon steel. Each type has varying levels of carbon content, which determines its strength and hardness. Low carbon steel round bars have the lowest carbon content and are more easily welded and formed. Medium carbon steel round bars have a higher carbon content and are stronger and more durable, making them suitable for applications that require higher strength. High carbon steel round bars have the highest carbon content and are extremely strong and hard, making them ideal for applications that require maximum strength and wear resistance.

Q: Are steel round bars suitable for machining applications?: Yes, steel round bars are suitable for machining applications. Steel round bars are known for their excellent machinability, which means they can be easily shaped, cut, and drilled using various machining techniques such as turning, milling, drilling, and grinding. They are commonly used in industries such as automotive, aerospace, construction, and manufacturing, where precision and durability are crucial. Steel round bars offer high strength, toughness, and resistance to wear, making them ideal for machining applications that require high-performance components or parts. Additionally, steel round bars are available in a wide range of grades and sizes, allowing for versatility in meeting specific machining requirements.

Q: Can steel round bars be welded?: Steel round bars can indeed be welded, as welding is a widely employed technique for connecting them. This involves heating the bars to a considerable temperature and subsequently applying pressure to fuse them, resulting in robust and long-lasting connections. Nonetheless, it is crucial to utilize suitable welding techniques and equipment in order to attain a weld of superior quality.

Q: What are the different grades of stainless steel round bars for marine applications?: There are several different grades of stainless steel round bars that are commonly used for marine applications. The most common grades include 304, 316, and 316L stainless steel. Grade 304 stainless steel is a versatile and widely used alloy that offers good corrosion resistance, high strength, and excellent formability. It is often used for marine applications where moderate corrosion resistance is required. Grade 316 stainless steel is similar to grade 304, but it contains additional molybdenum, which enhances its corrosion resistance, especially against chlorides and other aggressive environments commonly encountered in marine applications. This grade is often preferred for marine environments where increased resistance to corrosion is necessary. Grade 316L stainless steel is a low carbon version of grade 316, which further improves its resistance to sensitization and intergranular corrosion. This makes it highly suitable for marine applications where welding is required, as it minimizes the risk of corrosion at the welds. In addition to these grades, there are also specialized stainless steel alloys such as duplex stainless steel, which combines the benefits of austenitic and ferritic stainless steels. These alloys offer even higher corrosion resistance and strength, making them suitable for more demanding marine applications. When selecting the grade of stainless steel round bars for marine applications, it is important to consider the specific environmental conditions, such as exposure to saltwater, chemicals, or high temperatures. Consulting with a materials specialist or referring to industry standards can help ensure the right grade is chosen for the specific marine application.

Q: What are the different types of steel round bar surface treatments for improved hardness?: There are several different types of steel round bar surface treatments that can be used to improve hardness. Some common treatments include case hardening, nitriding, and induction hardening. Case hardening involves adding carbon to the surface of the steel to create a hardened outer layer, while nitriding involves introducing nitrogen to form a hard nitride layer. Induction hardening uses heat to quickly heat and cool the surface of the steel, creating a hardened layer. These treatments can significantly enhance the hardness and wear resistance of steel round bars.

Q: What is the hardness of a steel round bar?: The hardness of a steel round bar can vary depending on the specific type of steel used and the manufacturing process, but it is typically measured on the Rockwell or Brinell hardness scales.

Q: Can steel round bars be used in the manufacturing of pumps?: Yes, steel round bars can be used in the manufacturing of pumps. Steel round bars are commonly used in various industries for their strength, durability, and versatility. In pump manufacturing, steel round bars are often used as shafts or rotors due to their ability to withstand high pressure and rotational forces. The steel round bars can be machined, forged, or heat-treated to meet the specific requirements of the pump design. Additionally, steel round bars provide excellent corrosion resistance, making them suitable for pumps used in various environments. Overall, steel round bars are a reliable and commonly used material in pump manufacturing.

Send your message to us

*Email

*TEL

*Quantity

*Unit