• Grade AISI 4140,42CrMo, SCM440 Alloy Steel Round Bar System 1
  • Grade AISI 4140,42CrMo, SCM440 Alloy Steel Round Bar System 2
  • Grade AISI 4140,42CrMo, SCM440 Alloy Steel Round Bar System 3
  • Grade AISI 4140,42CrMo, SCM440 Alloy Steel Round Bar System 4
  • Grade AISI 4140,42CrMo, SCM440 Alloy Steel Round Bar System 5
Grade AISI 4140,42CrMo, SCM440 Alloy Steel Round Bar

Grade AISI 4140,42CrMo, SCM440 Alloy Steel Round Bar

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

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Specification

Type:
Alloy Steel
Shape:
Steel Round Bar

Specifications of Round Bar

  1. Produce Standard: GB, AISI, ASTM, SAE, EN, BS, DIN, JIS

  2. Produce Processes: Smelt Iron -EAF smelt Billet  - ESR smelt Billet -Hot rolled or forged get the  steel round bar and  plate

  3. Heat Treatment; Normalized / Annealed / Quenched+Tempered

  4. Quality Assurance:All order we can received  third party inspection, You can let SGS, BV,.. and others test company test and inspect our products before Goods shipping.

 

Equivement Grade

GB

20#

35#

45#

20Cr

40Cr

35CrMo

42CrMo

GCr15

60Si2MnA

65Mn

AISI

1020

1035

1045

5120

5140

4135

4140

52100

9260

1065

JIS

s20c

s35c

s45c

scr435

scr440

scm435

scm440

suj2

sup7

-

DIN

c20

c35

c45

20cr4

41cr4

35crmo4

42crmo4

100cr6

65si7

 

 

Chemical Composition

Grade

Dia.(mm)

C

Si

Mn

Cr

P

S

Ni

Cu

Mo

1020

16-280

0.17-0.25

0.17-0.37

0.35-0.65

≤0.15

≤0.035

≤0.035

≤0.30

≤0.25

 

1035

16-300

0.32-0.40

0.17-0.37

0.50-0.80

≤0.25

≤0.035

≤0.035

≤0.25

≤0.25

 

1045

16-430

0.42-0.50

0.17-0.37

0.50-0.80

≤0.25

≤0.035

≤0.035

≤0.30

≤0.25

 

5120

16-85

0.18-0.24

0.17-0.37

0.50-0.80

0.70-1.00

≤0.035

≤0.035

≤0.03

≤0.03

 

5140

16-400

0.37-0.44

0.17-0.37

0.50-0.80

0.80-1.10

≤0.035

≤0.035

≤0.30

≤0.03

 

4135

13-230

0.32-0.40

0.17-0.37

0.40-0.70

0.80-1.10

≤0.035

≤0.035

≤0.03

≤0.03

0.15-0.25

4140

13-360

0.38-0.45

0.17-0.37

0.50-0.80

0.90-1.20

≤0.035

≤0.035

≤0.03

≤0.03

0.15-0.25

52100

21-400

0.95-1.05

0.15-0.35

0.20-0.40

1.30-1.65

≤0.027

≤0.02

≤0.30

≤0.025

≤0.10

9260

20-60

0.56-0.60

1.50-2.00

0.60-0.90

≤0.35

≤0.035

≤0.035

≤0.35

≤0.20

 

1566

16-80

0.62-0.70

0.17-0.37

0.90-1.20

≤0.25

≤0.035

≤0.035

≤0.30

≤0.25

 

Our Featured Products

Alloy steel: Combination of steel / Bearing steel// Spring steel/ Cr- mo steel

GB 20Cr/ 40Cr / 42CrMo / 35CrMo/ 20CrMn/GCr15/30CrMnTi…

ASTM 5120 /5140 / 4140/ 4135/ 5152/52100…

JIS SCr420H/ SCr440/ SCM3/ SUP9/SUJ2…

 

Carbon steel: Carbon tool steel /Carbon Structural Steel

GB 20/ 35 /45/…

ASTM 1020/ 1030/1045…

JIS S20C/ S30C / S45C…

 

Usage and Applications of Round Bar

1. Chinese standard steel bar is often used where large amounts of steel need to be formed, for example as structural steel.

2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.

3. Steel round bar is used in construction and a large number of architectural and engineering structures.

 

 

Packaging & Delivery of Round Bar

Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)

Delivery Detail: 15~45 days

Trade terms: FOB, CFR, CIF

 

MOQ: 30 metric tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.

Weight: Theprice invoicing on theoretical weight basis or actual weight basis depends on customer’s request.

Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.

Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.

 

FAQ:

Q1: Why buy Materials & Equipment from OKorder.com?

A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.

Q2: How do we guarantee the quality of our products?

A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.

Q3: How soon can we receive the product after purchase?

A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.

Q4: What makes stainless steel stainless?

A4: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.

Q5: Can stainless steel rust?

A5: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.

Grade AISI 4140,42CrMo, SCM440 Alloy Steel Round Bar

Grade AISI 4140,42CrMo, SCM440 Alloy Steel Round Bar

Q: How is nitriding steel used in the production of tools and dies?
Nitriding steel is used in the production of tools and dies because it significantly enhances their surface hardness, wear resistance, and overall durability. This process involves diffusing nitrogen into the steel's surface, forming a hard layer that helps resist wear, abrasion, and corrosion. Nitrided tools and dies are therefore capable of withstanding heavy usage and high temperatures, which are common in manufacturing processes.
Q: How does special steel contribute to the strength of products?
Special steel contributes to the strength of products through its unique composition and manufacturing process. By incorporating specific alloys and heat treatments, special steel enhances the material's durability, toughness, and resistance to wear and corrosion. This increased strength allows products made from special steel to withstand higher loads, pressures, and extreme conditions, making them more reliable and long-lasting.
Q: What are the specific requirements for special steel used in the automotive piston industry?
The specific requirements for special steel used in the automotive piston industry include high strength and durability, excellent wear resistance, good thermal conductivity, and the ability to withstand high temperatures and pressures. Additionally, the steel should have low thermal expansion and good machinability for ease of manufacturing and assembly.
Q: How does special steel contribute to the renewable energy aftermarket industry?
Enhancing the efficiency, durability, and cost-effectiveness of renewable energy systems, special steel plays a critical role in the aftermarket industry. Wind turbine components are one of the primary beneficiaries of special steel in this industry. To withstand harsh environmental conditions and generate electricity efficiently, wind turbines require materials that are both high-strength and corrosion-resistant. Special steel alloys, such as high-strength low-alloy (HSLA) steel and stainless steel, offer exceptional mechanical properties, fatigue resistance, and corrosion resistance, making them an ideal choice for critical wind turbine components like rotor blades, tower structures, and more. By incorporating special steel into wind turbine manufacturing, the aftermarket industry can enjoy several advantages. Turbine lifespan is extended, maintenance costs are reduced, and energy output is improved. The strength and durability of special steel also allow for the construction of taller and larger wind turbine towers, enabling the installation of turbines in areas with lower wind speeds. This expansion of suitable locations maximizes the potential for energy production, making wind energy a more viable and widespread renewable energy source. Additionally, special steel contributes to the aftermarket industry through its application in solar power systems. Solar panels require sturdy mounting structures to handle the weight of the panels, withstand wind and snow loads, and ensure optimal sun exposure. Special steel, with its high strength-to-weight ratio and corrosion resistance, is commonly used in these mounting structures, providing long-lasting and reliable support for solar panels. Moreover, special steel finds applications in other renewable energy systems such as hydroelectric power plants and geothermal systems. These industries benefit from the corrosion resistance and ability to withstand extreme temperatures offered by special steel, ensuring the longevity and efficiency of the equipment. Overall, special steel plays a significant role in driving the growth and adoption of renewable energy sources worldwide. By enabling the production of reliable, durable, and efficient renewable energy systems, special steel contributes to the success of the aftermarket industry. Whether in wind turbines, solar panels, or other renewable energy technologies, special steel enhances performance and longevity, ultimately advancing the use of renewable energy sources on a global scale.
Q: How does special steel contribute to improving product lifespan?
Special steel contributes to improving product lifespan in several ways. Firstly, it offers enhanced durability and strength, allowing products to withstand heavy usage, high temperatures, and harsh environments without succumbing to wear and tear. This increased resilience helps prevent premature failure and extends the lifespan of the product. Additionally, special steel often possesses excellent corrosion resistance properties, protecting the product from rust and degradation caused by exposure to moisture or chemicals. Moreover, special steel's superior machinability and formability enable the production of complex and precise components, reducing the risk of structural flaws or defects that could compromise the product's lifespan. Overall, the use of special steel in manufacturing contributes significantly to producing long-lasting, reliable, and high-quality products.
Q: How does special steel perform in erosion applications?
Special steel performs exceptionally well in erosion applications due to its high resistance to wear and corrosion. Its unique composition and enhanced durability make it an ideal choice for environments where erosion is a common concern. Special steel's ability to withstand abrasive forces and maintain its structural integrity over time ensures long-lasting performance and minimizes the need for frequent replacements or repairs.
Q: How does special steel compare to other materials like aluminum or titanium?
Special steel, such as stainless steel or tool steel, offers several advantages over materials like aluminum or titanium. Firstly, special steel generally exhibits higher strength and hardness, making it ideal for applications requiring durability and resistance to wear. Secondly, special steel possesses excellent thermal conductivity, allowing it to dissipate heat more efficiently compared to aluminum or titanium. Additionally, special steel is often more cost-effective and readily available in comparison to titanium. However, aluminum and titanium are known for their lightweight properties, making them preferable for applications where weight reduction is crucial. Ultimately, the choice between special steel, aluminum, or titanium depends on the specific requirements and constraints of the intended application.
Q: Can special steel be used in the oil and gas equipment manufacturing industry?
Yes, special steel can be used in the oil and gas equipment manufacturing industry. Special steel alloys, such as stainless steel and alloy steel, possess high corrosion resistance, strength, and durability, which are crucial properties for equipment used in the oil and gas sector. Special steel is commonly used in the manufacturing of pipelines, valves, drill bits, and other critical components due to its ability to withstand harsh operating conditions and maintain structural integrity.
Q: How does special steel contribute to the automotive suspension industry?
Enhanced strength, durability, and performance are essential qualities that special steel brings to the automotive suspension industry. Suspension components greatly benefit from special steel alloys, particularly high-strength low-alloy (HSLA) steel, which are tailor-made to withstand the demanding conditions of the suspension system. This ensures optimal performance and safety. One of the primary advantages of special steel in the automotive suspension industry lies in its outstanding strength-to-weight ratio. Suspension components crafted from special steel alloys can endure heavy loads without succumbing to deformation, resulting in improved vehicle handling, stability, and overall performance. Its strength also contributes to increased durability, reducing the likelihood of premature component failure and extending the lifespan of the suspension system. Moreover, special steel offers superb fatigue resistance, a critical characteristic in the suspension industry where components experience repeated stress and vibrations. This fatigue resistance prevents the occurrence of cracks and fractures in suspension parts, guaranteeing dependable and secure operation even in challenging conditions. Additionally, special steel alloys provide superior corrosion resistance, safeguarding suspension components from the damaging effects of moisture, salt, and other environmental factors. This corrosion resistance extends the lifespan of the suspension system, decreasing maintenance costs, and enhancing overall reliability. Furthermore, special steel allows for improved design flexibility in suspension components. Its unique properties, such as high formability and weldability, enable manufacturers to create intricate and lightweight designs, resulting in more efficient suspension systems. These lightweight designs not only contribute to fuel efficiency and reduced emissions but also enhance the overall driving experience by improving vehicle agility and responsiveness. In summary, special steel plays an indispensable role in the automotive suspension industry, delivering enhanced strength, durability, and performance to suspension components. Its exceptional strength-to-weight ratio, fatigue resistance, corrosion resistance, and design flexibility contribute to improved handling, stability, safety, and overall vehicle performance. Through its unique properties, special steel ensures reliable and efficient suspension systems, satisfying the demanding requirements of the automotive industry.
Q: What are the applications of special steel in the power generation supply chain?
Special steel plays a crucial role in the power generation supply chain, specifically in applications where high strength, corrosion resistance, and temperature resistance are required. It is extensively used in the construction of power plant components such as boilers, turbines, and generators, as well as transmission lines and distribution systems. Special steel ensures the reliability and efficiency of power generation equipment, enabling it to withstand harsh operating conditions and maintain long-term performance.

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