Annealed,Hot Rolled&Forged 4130 Alloy Steel Bar
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
Standard:
AISI,JIS,GB,BS,DIN,API,EN,ASTM
Thickness:
as required
Technique:
Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Extruded,EFW,Spring
Shape:
U Channel,Square,C Channel,Hexagonal,Round
Surface Treatment:
Galvanized,Coated,Copper Coated,Color Coated,Oiled,Dry,Chromed Passivation,Polished,Bright,Black,PVDF Coated
Steel Grade:
Q195,Q215,Q235,Q215B,Q235B,RHB335,HRB400,200 Series,300 Series,400 Series,600 Series,SS400-SS490,10#,20#,A53(A,B)
Certification:
ISO,SGS,BV,IBR,RoHS,CE,API,BSI,UL
Length:
as required
Net Weight:
as required
Annealed,Hot Rolled&Forged 4130 Alloy Steel Bar
Material: | AISI 4130 Alloy Steel | |||||||||
Diameter | 6mm ~800mm or at your requirements | |||||||||
Length | 1m~12m or at your requirements | |||||||||
tolerance | a) Diameter: +/-0. 15mm or the others | |||||||||
b) Length:+/-4. 5mm or the others | ||||||||||
surface | black or turned | |||||||||
test | Squash test, Extended test, Water pressure test, Crystal rot test, Heat treatment, NDT. | |||||||||
Mechanical Property | Tensile Strength | ≥ (440~1470) | ||||||||
Yield Strength | ≥(255~1330) | |||||||||
Extension | ≥ (7%~24%) | |||||||||
Reduction of cross-section | ≥ (35%~60%) | |||||||||
Impact absorbing energy | ≥ (31~110) | |||||||||
Hardness (HBS) | ≤ (179~269) | |||||||||
Payment term | T/T L/C or we can negotiate it. | |||||||||
Delivery condition | EAF + LF + VD, hot rolled/forged/ Heat Treatment(optional), | |||||||||
Trade term | FOB/CFR/CIF | |||||||||
Delivery time | have stocks | |||||||||
Packagements | According to customers' requirements or export's demands | |||||||||
Port | Shenzhen/Guangzhou | |||||||||
MOQ | 100 Kilogrammes | |||||||||
Character
| 1,high strength and hardenability 4,good combination property 5,high quality and competitive price. | |||||||||
Application | made into ships, vehicle, aircraft, missile,weapons,railways,bridge,pressure vessel, machine tool,gears in gearbox, gear shaft, cam, worm, claw clutch, etc. | |||||||||
Products | Our products mainly cover special steel,including stainless steel, tool steel, die steel, bearing steel,etc. And in shapes, we provide steel round bar, steel square bar,steel flat bar, steel plate, steel sheet, steel coil, steel wire, ans steel pipe.Being the top-class products in China,our products have been used in all kinds of fields,such as aerospace, electronic information, machine manufacture,petrochemical,automotive,communication, transportation and medical instruments, etc. Our products are sold all over the world , mainly in Asia, South America, and Africa.
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Product show：
Workshop show：
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, Payment Terms?
30% TT as deposit and 70% before delivery.
Irrevocable L/C at sight.
4, Trading Terms?
EXW, FOB, CIF, FFR, CNF
5, After-sale Service?
We 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.
- Q: How does special steel contribute to improving product performance under extreme conditions?
- Special steel contributes to improving product performance under extreme conditions by offering superior strength, durability, and resistance to corrosion. Its unique composition and manufacturing techniques enhance its ability to withstand high temperatures, pressure, and harsh environments, ensuring the product's reliability and longevity. Additionally, special steel's exceptional mechanical properties enable it to retain its structural integrity and functionality, even in challenging conditions, ultimately enhancing the overall performance and safety of the end product.
- Q: How is creep-resistant steel used in the production of power plant components?
- Creep-resistant steel is used in the production of power plant components to withstand high temperatures and pressure conditions. This type of steel has excellent resistance to deformation over prolonged periods, preventing it from losing its shape and structural integrity. It is commonly used in boiler tubes, turbine blades, and other critical components where elevated temperatures and stress are prevalent. By using creep-resistant steel, power plants can ensure the longevity and reliability of their equipment, minimizing the risk of failures and ensuring continuous power generation.
- Q: How does aluminum contribute to the properties of special steel?
- Aluminum is commonly added as an alloying element in special steel to enhance its properties. By adding aluminum to steel, several improvements can be achieved. Firstly, aluminum improves the strength of steel by forming a fine dispersion of aluminum nitride particles within the steel matrix. These particles act as barriers to dislocation movement, impeding the deformation of the steel and increasing its strength. This makes the steel more resistant to mechanical stresses and enhances its load-bearing capacity. Secondly, aluminum also enhances the corrosion resistance of steel. It forms a protective oxide layer on the surface of the steel, acting as a barrier against the corrosive agents. This oxide layer prevents the steel from oxidizing, rusting, and deteriorating over time, making it more durable and long-lasting in various environments. Additionally, aluminum can improve the machinability of special steel. Its presence in the steel composition reduces the tendency of the steel to work harden during machining operations. This makes it easier to cut, drill, or shape the steel, resulting in improved productivity and reduced tool wear. Moreover, aluminum contributes to the heat resistance of special steel. It has a high melting point and good thermal conductivity, which helps in maintaining the structural integrity of the steel at elevated temperatures. This makes aluminum-steel alloys suitable for applications where high-temperature resistance is required, such as in the aerospace and automotive industries. In summary, aluminum contributes significantly to the properties of special steel. It enhances the strength, corrosion resistance, machinability, and heat resistance of steel, making it a versatile material with a wide range of applications.
- Q: How does special steel compare to other materials?
- Special steel is known for its exceptional strength, durability, and resistance to corrosion, making it superior to many other materials. Its unique composition and manufacturing processes result in improved performance, higher load-bearing capacity, and enhanced safety compared to other materials. Additionally, special steel offers excellent heat resistance, making it suitable for a wide range of applications, including automotive, construction, and aerospace industries.
- Q: Classification of special steel products
- Carbon structural steels are normally used directly under heat supply without heat treatment. The mass fraction of Q195, Q215, Q235 are usually of low carbon steel, good welding performance, good plasticity and toughness, a certain strength, often rolled into a sheet, steel, welded steel pipe, used for bridges, buildings and general manufacturing rivet, screw and nut parts etc.. Q255 and Q275 mass fraction of carbon steel is slightly high, high strength, good plasticity and toughness, can be welded steel, steel rolling, usually forming and plate structure and simple manufacturing machinery, connecting rod, gear coupling, pins and other parts. Plain carbon steel high carbon steel is basically contains alloy elements, the carbon content in the range of 0.65% ~ 1.35%, the production of low cost, easy to obtain raw materials, good machinability, after treatment can obtain high hardness and high wear resistance, so the steel is widely used to manufacture various. Cutting tool, mold, measuring tools.But the red hardness difference of this kind of steel, that is, when the working temperature is greater than 250 degrees, the hardness and wear resistance of steel will decline rapidly, and lose their ability to work. In addition, if carbon tools steel is made into larger parts, it is difficult to harden, and deformation and crack are easy to occur. This kind of steel must ensure both chemical composition and mechanical properties. The number is two digits by the average mass fraction of carbon steel in the 000 fraction (W C * 10000). For example, steel 45 shows the average mass fraction of carbon in steel is 0.45%; 08 steel indicates the average mass fraction of carbon in steel is 0.08%.
- Q: How does special steel contribute to the construction of bridges?
- Special steel plays a crucial role in the construction of bridges by offering superior strength, durability, and corrosion resistance. It allows engineers to design lighter and more efficient bridge structures, leading to cost savings and reduced environmental impact. The use of special steel also enhances the overall safety and longevity of bridges, ensuring their ability to withstand heavy loads, extreme weather conditions, and the test of time.
- Q: What are the main characteristics of structural steel?
- The main characteristics of structural steel include high strength, durability, versatility, and cost-effectiveness. It has a high strength-to-weight ratio, allowing for the construction of large and complex structures with minimal material usage. It is also resistant to corrosion and can withstand extreme weather conditions, making it suitable for both indoor and outdoor applications. Additionally, structural steel is highly versatile, as it can be easily fabricated, modified, and reused. Its cost-effectiveness is another key characteristic, as it offers long-term value due to its low maintenance requirements and ability to withstand heavy loads.
- Q: How is nitriding steel used in surface hardening processes?
- Nitriding steel is used in surface hardening processes by introducing nitrogen into the steel's surface, resulting in the formation of a hard and wear-resistant outer layer. This process enhances the steel's mechanical properties, such as hardness, fatigue strength, and wear resistance, making it ideal for applications where high durability and resistance to abrasion are required.
- Q: Can special steel be used in the plastic manufacturing industry?
- Yes, special steel can be used in the plastic manufacturing industry. Special steel alloys, such as tool steels, can be employed in the production of molds and dies used for shaping and forming plastic materials. These high-strength steels are essential for withstanding the high temperatures and pressures involved in plastic injection molding and other manufacturing processes. Special steel's durability and resistance to wear make it an ideal choice for enhancing the longevity and performance of plastic manufacturing equipment.
- Q: What are the main factors affecting the corrosion fatigue strength of special steel?
- Several factors affect the corrosion fatigue strength of special steel. Firstly, the composition of the steel is crucial. Special steels typically contain various alloying elements like chromium, nickel, molybdenum, and copper, which enhance their corrosion resistance. The presence and quantity of these elements significantly impact the corrosion fatigue strength. Generally, higher levels of alloying elements improve resistance to corrosion fatigue. Secondly, the surface condition of the steel is important. Any surface defects such as scratches, pits, or roughness can act as stress concentrators and accelerate the initiation and propagation of corrosion fatigue cracks. Additionally, the presence of surface contaminants like dirt, grease, or salts can increase the corrosive environment and reduce the corrosion fatigue strength. Thirdly, the environmental conditions in which the steel is exposed play a significant role. Corrosion fatigue occurs due to the combined action of cyclic loading and a corrosive environment. Factors like temperature, humidity, pH, and the presence of corrosive substances such as saltwater or chemicals can accelerate the corrosion process and reduce the fatigue strength. Furthermore, the mechanical properties of the steel, such as hardness, strength, and ductility, also influence its corrosion fatigue strength. Higher strength and hardness enhance resistance to fatigue crack initiation, while greater ductility improves resistance to crack propagation. However, excessive hardness or brittleness can decrease corrosion fatigue strength. Lastly, the design and manufacturing processes of components made from special steel can impact their corrosion fatigue strength. Factors such as welding techniques, heat treatment, and surface finishing can introduce residual stresses or alter the microstructure of the steel, affecting its corrosion fatigue behavior. In conclusion, the corrosion fatigue strength of special steel is influenced by its composition, surface condition, environmental conditions, mechanical properties, and manufacturing processes. Understanding and appropriately addressing these factors are crucial for enhancing the corrosion fatigue resistance of special steel components.
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Annealed,Hot Rolled&Forged 4130 Alloy Steel Bar
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 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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