DIN1.7225/SAE4140 CNBM Alloy Steel Round Bar with Low Price
- Ref 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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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
DIN1.7225/SAE4140 Alloy Steel Round Bar Price
Name | DIN1.7225/SAE4140 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 |
Chemical Composition
C | Si | Mn | Cr | Mo | P | S |
0.38-0.43 | 0.40max | 0.60-0.90 | 0.90-1.20 | 0.15-0.30 | ≤0.035 | ≤0.035 |
Application
4140 Alloy Steel is engineering steel supplied in quenched and tempered conditions.
Very good machinability.
High toughness.
High creep strength.
Repeated impact resistant capability.
Packaging & Delivery
Packaging Detail | Sea worthy packing /as per customer's packing instruction |
Delivery Detail | 15 ~ 40 days after receiving the deposit |
Product Show
Workshop
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: What are the different methods of testing special steel for quality assurance?
- There are several methods of testing special steel for quality assurance, including mechanical testing, chemical analysis, non-destructive testing, and metallographic analysis. Mechanical testing involves measuring the steel's strength, hardness, and toughness through techniques such as tensile testing, impact testing, and hardness testing. Chemical analysis helps determine the composition and impurities in the steel through methods like spectroscopy and elemental analysis. Non-destructive testing methods like ultrasonic testing, magnetic particle testing, and radiographic testing are used to detect any defects or flaws in the steel without causing damage. Metallographic analysis involves examining the steel's microstructure through techniques like optical microscopy and electron microscopy to assess its internal structure and identify any potential issues.
- Q: How is special steel used in the production of hydraulic components?
- Special steel is used in the production of hydraulic components due to its high strength, durability, and corrosion resistance properties. It ensures the components can withstand the high pressures and intense operating conditions of hydraulic systems, resulting in reliable and long-lasting performance.
- Q: What are the applications of special steel in the nuclear industry?
- Special steel is extensively used in the nuclear industry due to its unique properties. It is used to manufacture various components such as reactor vessels, steam generators, and fuel cladding, which require high strength, corrosion resistance, and heat resistance. Special steel ensures the safety and efficiency of nuclear power plants by withstanding extreme temperatures, pressures, and corrosive environments. Its applications in the nuclear industry are crucial for maintaining the integrity and reliability of nuclear facilities.
- Q: What are the main characteristics of alloy steel forgings?
- Alloy steel forgings possess several key characteristics that make them highly desirable in various industries. Firstly, alloy steel forgings are known for their exceptional strength and durability. The inclusion of different alloying elements, such as chromium, nickel, molybdenum, and vanadium, enhances the steel's mechanical properties, making it resistant to wear, fatigue, and corrosion. Another important characteristic of alloy steel forgings is their versatility. These forgings can be customized to meet specific requirements, whether it be in terms of shape, size, or performance. This adaptability allows for the production of complex and intricate components that are often used in critical applications, such as aerospace, automotive, and oil and gas industries. Additionally, alloy steel forgings exhibit excellent heat resistance and can withstand extreme temperature fluctuations without losing their structural integrity. This property is particularly beneficial in applications where components are exposed to high temperatures or rapid temperature changes, such as gas turbines, boilers, and heat exchangers. Furthermore, alloy steel forgings offer superior machinability and weldability, making them easier to work with during the manufacturing process. This characteristic allows for precise shaping, forming, and machining of the forgings, enabling manufacturers to achieve intricate designs and tight tolerances. Lastly, alloy steel forgings are known for their cost-effectiveness. Despite their exceptional properties, alloy steel forgings can be produced in large quantities, resulting in economies of scale. This makes them a cost-efficient choice for various industries looking to balance performance, durability, and affordability. In summary, the main characteristics of alloy steel forgings are their exceptional strength, durability, versatility, heat resistance, machinability, weldability, and cost-effectiveness. These qualities make alloy steel forgings a preferred choice for applications requiring high-performance components that can withstand challenging conditions.
- Q: What are the requirements for special steel used in high-pressure applications?
- To ensure its durability and reliability under extreme conditions, special steel utilized in high-pressure applications must fulfill specific criteria. Some of the crucial requirements for this type of steel include the following: 1. Exceptional strength: The steel must possess extraordinary strength to withstand the intense forces and pressures it will encounter. This allows it to resist deformation and maintain its structural integrity. 2. Remarkable corrosion resistance: The steel needs to exhibit a high resistance to corrosion since it will frequently come into contact with aggressive fluids or gases in high-pressure environments. This prevents deterioration over time and helps sustain its performance and longevity. 3. Good weldability: The special steel employed in high-pressure applications should have good weldability in order to facilitate easy and efficient joining of different components. This ensures the overall integrity and reliability of the system. 4. Endurance against high temperatures: The steel must be capable of withstanding elevated temperatures without compromising its mechanical properties. This is particularly critical in applications where high-pressure fluids or gases are heated or where the steel is exposed to extreme heat sources. 5. Resistance to fatigue: The special steel should display a high resistance to fatigue failure, as it will often undergo cyclic loading and pressure fluctuations. This enables the steel to endure repeated stress and pressure cycles without developing cracks or failures. 6. Precise dimensional tolerance: The steel should possess precise dimensional tolerance to ensure proper fit and functionality within the high-pressure system. This helps minimize leakage or any potential weak points in the system. 7. Compliance with industry standards: The special steel used in high-pressure applications must meet relevant industry standards and specifications, such as those established by organizations like the American Society of Mechanical Engineers (ASME) or the American Petroleum Institute (API). This guarantees that the steel meets the required quality and performance standards. In summary, special steel for high-pressure applications must possess a combination of extraordinary strength, remarkable corrosion resistance, good weldability, endurance against high temperatures, resistance to fatigue, precise dimensional tolerance, and compliance with industry standards to ensure its suitability and reliability in demanding environments.
- Q: What are the different methods for controlling the grain size in special steel?
- There are several methods for controlling the grain size in special steel. One common method is through the use of alloying elements such as vanadium or niobium, which can help refine the grain structure. Another approach is to employ controlled cooling techniques, such as quenching or tempering, to manipulate the rate at which the steel solidifies and thus control the grain size. Additionally, grain size can be influenced by the addition of grain refiners or by subjecting the steel to severe plastic deformation processes like rolling or forging. Overall, these methods allow for precise control over the grain size in special steel, enabling improved mechanical properties and performance.
- Q: What are the main applications of special steel?
- The main applications of special steel include the manufacturing of tools, machinery, and equipment used in industries such as automotive, aerospace, construction, and energy. It is also widely used in the production of cutlery, surgical instruments, and various components for infrastructure and engineering projects. Special steel's properties, such as high strength, corrosion resistance, and heat resistance, make it indispensable in these sectors where durability, reliability, and performance are crucial.
- Q: What are the different heat treatment defects in special steel?
- There are several heat treatment defects that can occur in special steel during the heat treatment process. Some of the most common defects include: 1. Decarburization: This occurs when the surface layers of the steel lose carbon due to exposure to high temperatures in an oxygen-rich environment. Decarburization can lead to reduced hardness and strength in the treated steel. 2. Quench cracking: Also known as cracking during quenching, this defect occurs when the steel undergoes rapid cooling after being heated. The differential cooling rates can cause internal stresses, leading to cracks in the material. 3. Distortion: Distortion refers to the change in shape or dimension of the steel during the heat treatment process. It can occur due to non-uniform heating or cooling, inadequate fixturing, or improper quenching techniques. 4. Soft spots: Soft spots are localized areas of reduced hardness in the treated steel. These spots can occur due to insufficient heating or improper quenching, leading to reduced mechanical strength in those areas. 5. Overheating: Overheating is a defect that occurs when the steel is exposed to excessively high temperatures during the heat treatment process. This can result in grain growth, reduced toughness, and decreased overall material properties. 6. Case hardening problems: Special steels often undergo case hardening processes, such as carburizing or nitriding, to create a hard outer layer. However, several defects can occur during these processes, including insufficient or excessive hardening, poor case depth, or uneven hardness distribution. 7. Residual stresses: Residual stresses are internal stresses that remain in the steel after the heat treatment process. These stresses can lead to dimensional instability, warping, or even cracking if not properly controlled. To avoid or minimize these heat treatment defects, it is crucial to follow proper heat treatment procedures, including precise temperature control, adequate cooling rates, and appropriate fixturing techniques. Additionally, using high-quality heat treatment equipment, monitoring the process closely, and conducting thorough inspections can help detect and address any potential defects in special steel.
- Q: How is special steel used in the manufacturing of tools and dies?
- Special steel is used in the manufacturing of tools and dies due to its exceptional properties, such as high strength, hardness, and wear resistance. These steels can withstand extreme temperatures and pressures during the forming, cutting, and shaping processes. They also have excellent dimensional stability, ensuring precise and accurate tooling. Special steel's unique composition and heat treatment capabilities allow for the production of durable and long-lasting tools and dies, which are essential for various industries like automotive, aerospace, and manufacturing.
- Q: How does special steel resist wear and abrasion?
- Special steel resists wear and abrasion through various mechanisms such as the presence of alloying elements, heat treatment processes, and specialized surface coatings. Alloying elements like chromium, manganese, and vanadium enhance the steel's hardness, toughness, and resistance to wear. Heat treatment techniques, such as quenching and tempering, further improve the steel's microstructure, making it more resistant to wear and abrasion. Additionally, specialized surface coatings like chrome plating or nitriding can be applied to enhance the steel's surface hardness, reducing friction and preventing wear. Overall, the combination of alloying elements, heat treatment, and surface coatings significantly enhance the wear and abrasion resistance of special steel.
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DIN1.7225/SAE4140 CNBM Alloy Steel Round Bar with Low Price
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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