• Grade AISI 4340 CNBM Forged Steel Round Bar System 1
  • Grade AISI 4340 CNBM Forged Steel Round Bar System 2
  • Grade AISI 4340 CNBM Forged Steel Round Bar System 3
  • Grade AISI 4340 CNBM Forged Steel Round Bar System 4
  • Grade AISI 4340 CNBM Forged Steel Round Bar System 5
  • Grade AISI 4340 CNBM Forged Steel Round Bar System 6
Grade AISI 4340 CNBM Forged Steel Round Bar

Grade AISI 4340 CNBM Forged Steel Round Bar

Ref Price:
get latest price
Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
3 m.t.
Supply Capability:
10000 m.t./month

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Item specifice

Type:
Alloy Steel
Shape:
Steel Round Bar

 Grade AISI 4340 CNBM Forged Steel Round Bar

Name

SAE4340 Carbon Steel Round Bar

Shape

Round Bar/Square Bar/Flat Bar/Plate/Wire

Standard

GB/ASTM/SAE/AISI/DIN/JIS/EN/BS

Surface Treatment:

Black/Peeling/Polished/Machined  

Delivery Condition:

Hot Rolled or Forged/Peeled or Black Surface

Test

SGS/UT 100% Elements Testing

Certificate:

ISO/Mill Certificate

Service:

24 hours online service /

more than 20 years trading and manufacture 

Quality Assurance:

the third party inspection, such as SGS, BV, TUV…etc. is acceptable

Packaging Details:

seaworthy packaging or as per customer's packing instruction

 

Machine Capability

Tensile strength (N/mm2Mpa): >=980(100)
Elongation: >=12
Yield strength: >=835(85)
Hardness:( HBS 100/3000)<=269
Reduction of area:>=55

Akv(J)>=78  akv(J/cm2):>=98(10)

 

Chemical Composition (%):

C

Si

Mn

S

P

Cr

Ni

Cu

Mo

0.37-0.44

0.17-0.37

0.40-0.80

0.025(max)

0.025(max)

0.60-0.90

1.25-1.65

0.025(max)

0.15-0.25

 

Packaging & Delivery

Packaging Detail

Sea worthy packing /as per customer's packing instruction

Delivery Detail

15 ~ 40 days after receiving the deposit

Grade AISI 4340 CNBM Forged Steel Round Bar

 

Product Show

Grade AISI 4340 CNBM Forged Steel Round Bar

 

Workshop

Grade AISI 4340 CNBM Forged Steel Round Bar

FAQ

Are you a trading company or manufacturer?

Manufacturer

What’s the MOQ?

3 metric ton

What’s your delivery time? 

15-35 days after downpayment received

Do you Accept OEM service?

Yes

what’s your delivery terms?

FOB/CFR/CIF

What's the Payment Terms?

30% as deposit,70% before shipment by T/T

Western Union acceptable for small amount.

L/C acceptable for large amount.

Scrow ,Paybal,Alipay are also ok 

Why  choose  us?

Chose happens because of quality, then price, We can give you both. 

Additionally, we can also offer professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposals.

What's your available port of Shipment?

Main Port, China

What’s your featured  services?

Our service formula: good quality+ good price+ good service=customer's trust

Where are your Market?

Covering more than 160 countries in the world

 

Q:How does special steel contribute to the mining industry?
Special steel contributes to the mining industry by offering enhanced durability, high strength, and resistance to extreme conditions. It is used in various mining equipment and machinery, such as drills, excavators, and crushers, to withstand the harsh environment and increase efficiency. Additionally, special steel alloys with specific properties are utilized in mining processes like ore extraction and mineral processing, ensuring optimum performance and reducing downtime.
Q:How does special steel contribute to the production of precision instruments?
Special steel contributes to the production of precision instruments by providing the necessary strength, durability, and resistance to corrosion. Its unique properties allow for the manufacturing of intricate components with tight tolerances, ensuring the precision instruments function accurately and reliably.
Q:How does free-cutting steel improve machinability?
Free-cutting steel improves machinability by containing additional elements, such as sulfur, lead, or phosphorus, which help to break the chips and aid in chip removal during the machining process. These elements act as lubricants, reducing friction and heat generation, which results in improved surface finish and reduced tool wear.
Q:Can special steel be used in the textile industry?
Yes, special steel can be used in the textile industry. Special steel alloys, such as stainless steel, can be used for textile machinery components like needles, pins, and various parts of looms. These steel alloys provide excellent strength, corrosion resistance, and durability, making them suitable for demanding textile manufacturing processes.
Q:How does special steel perform in additive manufacturing applications?
Special steel performs well in additive manufacturing applications due to its high strength, durability, and resistance to wear and corrosion. The unique properties of special steel, such as its ability to withstand high temperatures and extreme environments, make it an ideal material for 3D printing processes. Additionally, the flexibility and customization offered by additive manufacturing allows for the creation of complex geometries and intricate designs, further enhancing the performance of special steel in various applications.
Q:What are the unique properties of stainless steel?
Stainless steel has several unique properties that make it highly desirable in various applications. Firstly, it has excellent corrosion resistance, making it resistant to rust and staining, even in harsh environments. Additionally, stainless steel is durable and can withstand high temperatures, making it suitable for use in extreme conditions. It also has a high strength-to-weight ratio, making it strong yet lightweight. Moreover, stainless steel is hygienic and easy to clean, making it ideal for use in food processing and medical equipment. Lastly, stainless steel has an attractive appearance and can be easily fabricated into different shapes, making it a versatile material for various industries.
Q:What is the significance of carbon content in special steel?
The carbon content in special steel is significant as it determines the steel's strength, hardness, and overall performance. Higher carbon content usually results in increased hardness and strength, making it suitable for applications that require high durability and resistance to wear. On the other hand, lower carbon content enhances the steel's ductility and ease of machining. The right balance of carbon content in special steel allows manufacturers to tailor the material to specific needs, ensuring optimal performance in various industries such as automotive, aerospace, and construction.
Q:How does special steel contribute to the chemical industry?
Special steel plays a crucial role in the chemical industry by offering exceptional corrosion resistance and high temperature resistance properties. It is used to manufacture various equipment such as storage tanks, pipelines, valves, and reactors, which are essential for handling corrosive chemicals and operating under extreme conditions. Special steel ensures the integrity and safety of these structures, preventing leaks and maintaining product quality, thus enabling efficient and reliable chemical processes.
Q:What are the main applications of special steel in the chemical industry?
Special steel is extensively used in the chemical industry for various applications. Some of the main applications include the manufacturing of storage tanks, pipelines, and equipment that require resistance to corrosion, high temperatures, and pressure. Special steel also finds use in the production of catalysts, which are vital for many chemical processes. Additionally, it is employed in the construction of reactors, heat exchangers, and other critical components that require exceptional durability and reliability in harsh chemical environments.
Q:What are the different testing methods used for special steel?
Some of the common testing methods used for special steel include hardness testing, tensile testing, impact testing, metallographic examination, chemical analysis, and non-destructive testing. These methods help assess the mechanical properties, microstructure, chemical composition, and overall integrity of special steel, ensuring its suitability for various applications.

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