• Grade SAE 4140 Steel Price_Steel Round Bar Dimension System 1
  • Grade SAE 4140 Steel Price_Steel Round Bar Dimension System 2
  • Grade SAE 4140 Steel Price_Steel Round Bar Dimension System 3
  • Grade SAE 4140 Steel Price_Steel Round Bar Dimension System 4
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  • Grade SAE 4140 Steel Price_Steel Round Bar Dimension System 6
Grade SAE 4140 Steel Price_Steel Round Bar Dimension

Grade SAE 4140 Steel Price_Steel Round Bar Dimension

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Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
3 m.t.
Supply Capability:
10000 m.t./month

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Item specifice

Type:
Gear Steel
Shape:
Steel Round Bar

Grade SAE 4140 Steel Price_Steel Round Bar Dimension

 

Details of Grade SAE 4140 Steel Price_Steel Round Bar Dimension

Name

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

 

Specification of SAE 4140 Steel Price_Steel Round Bar Dimension

1.Size of 4140 Steel Round Bar

Round bar

Diameter(mm)

Length (mm)

20~800

3000~9000

Plate

Thickness(mm) 

Width (mm)  

Length (mm)   

Max:800

Max:2200

Max:9000

The specification can be customized.

2.Chemical Compositons

Grade

C

Si

Mn

P

S

Cr

Mo

Ni

42CrMo

0.38~0.45

0.17~0.37

0.50~0.8

≤0.035

≤0.035

0.9~1.2

0.15-0.25

≤0.3

4140

0.40~0.45

0.15~0.35

0.75~1.0

≤0.035

≤0.040

0.8~1.1

0.15-0.25

-

SCM44

0.38~0.43

0.15~0.35

0.60~0.9

≤0.030

≤0.030

0.9~1.2

0.15-0.30

≤0.25

1.7225

0.38~0.45

≤0.40

0.60~0.9

≤0.025

≤0.035

0.9~1.2

0.15-0.30

 

3.Features of 4140 alloy steel

1. Chromium molybdenum alloy steel 

2. Slightly higher carbon content then 4130

3. Greater strength and heat treatment 

4.Typical Applications 

1. Applications in the oil and gas sector

2. Connection rods, collets, conveyor pins, 

3. Gears, stem assemblies, 

4. Pump shafts and tool holders

CNBM Introduction of  SAE 4140 Steel Price_Steel Round Bar Dimension Supplier

CNBM International Corporation is the most import and export platform of CNBM group(China National Building Material Group Corporation) ,which is a state-owned enterprise, ranked in 270th of Fortune Global 500 in 2015.

With its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high quality series of refractories as well as technical consultancies and logistics solution.

Grade SAE 4140 Steel Price_Steel Round Bar Dimension

Grade SAE 4140 Steel Price_Steel Round Bar Dimension

After-sale service

  • CNBM provides the services and support you need for every step of our cooperation. We’re the business partners you

    can trust; you can relax and get on with doing business.

  • For any problem, please kindly contact us at any your

    convenient time, we’ll reply you in our first priority within 24 hours

     

Advantages  

 

  • Industry experience over 20 years.

  • Shipment of goods -More than 70 countries worldwide.

  • The most convenient transport and prompt delivery.

  • Competitive price with best service.

  • High technical production line with top quality products.

  • High reputation based on best quality products.

     

 

Packaging & Delivery  SAE 4140 Steel Price_Steel Round Bar Dimension

Packaging Detail

Sea worthy packing /as per customer's packing instruction

Delivery Detail

15 ~ 40 days after receiving the deposit

Products Show

Grade SAE 4140 Steel Price_Steel Round Bar Dimension

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 perform in terms of corrosion resistance?
Special steel performs exceptionally well in terms of corrosion resistance. It is specifically designed and engineered to have enhanced resistance against corrosion compared to standard steel. This is achieved through various alloying elements and specific heat treatment processes that create a protective barrier against corrosive elements such as moisture, chemicals, and atmospheric conditions. As a result, special steel exhibits excellent durability and longevity even in corrosive environments, making it a preferred choice in industries where corrosion resistance is crucial, such as marine, oil and gas, and chemical industries.
Q:What are the different heat treatment methods for special steel?
There are several heat treatment methods for special steel, including annealing, quenching, tempering, and normalizing. Annealing involves heating the steel to a specific temperature and then slowly cooling it to improve its machinability and reduce internal stresses. Quenching is a rapid cooling process that makes the steel harder and more brittle, but also increases its strength. Tempering is a heat treatment process that involves reheating quenched steel to a specific temperature and then cooling it again to improve its toughness and reduce brittleness. Normalizing is another heat treatment method that involves heating the steel to a specific temperature and then cooling it in still air to improve its mechanical properties and refine its grain structure.
Q:What are the common challenges in heat treatment of special steel?
Some common challenges in the heat treatment of special steel include achieving uniform heating and cooling rates, managing distortion and warping, controlling grain growth, and avoiding the formation of undesirable phases or microstructures. Additionally, maintaining tight temperature tolerances, ensuring proper heat transfer within the material, and minimizing the risk of cracking or other forms of damage are also key challenges in the heat treatment process.
Q:What are the different coating materials used for special steel?
There are several different coating materials used for special steel, depending on the specific requirements and applications. Some common coating materials include zinc, nickel, chrome, tin, and ceramic coatings. These coatings provide various benefits such as corrosion resistance, improved wear resistance, enhanced aesthetics, and increased durability. The choice of coating material depends on factors like the intended use of the steel, environmental conditions, and desired performance characteristics.
Q:How does special steel contribute to reducing weight in applications?
There are several ways in which special steel can help to reduce weight in applications. Firstly, special steel alloys can be designed to have high strength-to-weight ratios. This means that they can provide the same level of strength and performance as other materials, such as traditional steel or aluminum, but with less weight. By substituting special steel for heavier materials, manufacturers can decrease the overall weight of the application without compromising its structural integrity. Furthermore, special steel can be manufactured with enhanced fatigue resistance and durability properties. This allows for the use of thinner and lighter sections without sacrificing strength. This is particularly crucial in industries where weight reduction is crucial, such as automotive and aerospace, as it enables the production of lighter vehicles or aircraft. As a result, fuel efficiency is improved and emissions are reduced. Moreover, special steel can also contribute to weight reduction through its versatility in manufacturing processes. It can be easily formed, shaped, and welded, allowing for the creation of complex and lightweight structures. This flexibility in fabrication methods empowers engineers to optimize the design and maximize weight savings by utilizing special steel in innovative ways. In conclusion, special steel aids in reducing weight in applications by offering high strength-to-weight ratios, improved fatigue resistance, and durability. Additionally, it provides versatility in manufacturing processes. These attributes make special steel an ideal choice for industries seeking weight reduction, ultimately resulting in enhanced performance, efficiency, and sustainability.
Q:What is the role of special steel in sustainable manufacturing?
The role of special steel in sustainable manufacturing is crucial as it provides numerous advantages that contribute to environmentally friendly production processes. Firstly, its high durability and long lifespan reduce the need for frequent replacement or repairs, thus minimizing waste and extending the life cycle of products, ultimately reducing the overall environmental impact. Moreover, special steel exhibits excellent recyclability properties, allowing it to be recycled multiple times without compromising its quality or performance. This makes it a sustainable choice for manufacturers who can incorporate recycled special steel into their production processes, thereby reducing their dependence on virgin materials and decreasing energy consumption and greenhouse gas emissions associated with the extraction and production of new steel. Furthermore, special steel's high strength and lightweight characteristics enable manufacturers to design energy-efficient products. For instance, in the automotive industry, the use of special steel in vehicle manufacturing reduces weight, leading to improved fuel efficiency and lower emissions. This contributes to the reduction of carbon footprint and supports sustainable transportation. Special steel also plays a significant role in the production of renewable energy technologies. Wind turbines, solar panels, and hydropower systems require robust and resilient materials to withstand harsh conditions. Special steel provides the necessary strength, corrosion resistance, and durability for these renewable energy infrastructure projects, facilitating the growth of the renewable energy sector and the transition to a more sustainable energy mix. In conclusion, special steel is vital in sustainable manufacturing due to its durability, recyclability, lightweight properties, and strength. By incorporating special steel into their manufacturing processes, businesses can reduce waste, energy consumption, and emissions, while also enabling the development of energy-efficient products and renewable energy technologies. This integration of special steel is a crucial step towards achieving a more sustainable and environmentally friendly future.
Q:How is special steel used in the production of turbine blades?
Special steel is used in the production of turbine blades due to its exceptional strength, heat resistance, and corrosion resistance properties. This high-quality steel allows turbine blades to withstand the extreme conditions within a turbine, including high temperatures and rotational speeds. Additionally, the unique composition of special steel enables the blades to maintain their shape and structural integrity, ensuring optimal performance and longevity in power generation applications.
Q:What are the main advantages of using special steel in the construction of bridges?
The main advantages of using special steel in the construction of bridges are its high strength, durability, and resistance to corrosion. Special steel, such as high-strength low-alloy steel or weathering steel, can withstand heavy loads and extreme weather conditions, making it ideal for bridge construction. Its superior strength allows for the design of lighter and more cost-effective structures. Additionally, special steel's resistance to corrosion reduces maintenance and repair costs, ensuring the longevity and safety of the bridge.
Q:What are the factors affecting the machinability of special steel?
The factors affecting the machinability of special steel include the composition and microstructure of the steel, the hardness and strength of the steel, the presence of impurities or inclusions, the cutting tool and its geometry, the cutting speed and feed rate, the coolant or lubricant used during machining, and the machine tool and its rigidity.
Q:What are the different methods of surface texturing for special steel?
Surface texturing for special steel can be achieved through various methods, each with its own unique benefits and applications. Among the most commonly used techniques are: 1. Shot blasting: By propelling small metal or ceramic particles at high speeds onto the steel surface, this process effectively eliminates impurities and contaminants. It results in a textured finish that enhances adhesion for coatings and paints. 2. Acid etching: In this method, the steel is submerged in an acidic solution that selectively removes a thin layer of the surface, creating intricate patterns or designs. Acid etching enables the achievement of detailed textures on the steel surface. 3. Mechanical grinding: This technique involves physically grinding and removing material from the steel surface using abrasive tools. The texture achieved can range from smooth to rough, depending on the grit size of the grinding tool. 4. Laser texturing: An advanced approach, laser texturing employs laser technology to produce precise and intricate patterns on the steel surface. This method offers exceptional precision, repeatability, and enables the creation of complex designs that may be challenging to achieve with other methods. 5. Electrochemical etching: By utilizing an electric current, this process selectively dissolves the steel surface, resulting in a textured pattern. Electrochemical etching allows for consistent and controlled textures on the steel surface. Each surface texturing method has its own advantages and limitations. The choice of technique depends on factors such as the desired texture, the specific properties of the special steel, and the intended application.

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