Grade Q345 HR Steel Coil with High Quality and Low Price
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
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Item specifice
Grade Q345 HR Steel Coil with High Quality and Low Price
Quick Details
Name | Hot Rolled Steel Coil |
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
Commodity | Hot rolled steel plate/Mild steel plate/black steel plate/Carbon steel plate/sheet |
STEEL GRADE | A36, AH36,A283 Gr.C, SS400, S235J1/S235J2/S235JR, S275J1/S275J2/S275JR, A516 Gr.60/A516 Gr.70, ST37-2 |
Standard | GB,JIS,DIN,AISI,ASTM |
Thickness | 1.5mm ~ 200mm |
Width | 1000mm 1220mm 1250mm 1500mm 2000mm 2500mm 3000mm |
length | below 12000mm & coil |
Surface | Clean, blasting and painting according to customer requirement |
Delivery time | standard size 15days goods can load into container, if produce goods need 35days |
Application | Widely used in petrochemistry,chemistry,electricity,boiler and vessel manufacture,and could |
be made into reactor,heat exchange facility,segregator,sphere vessel,oil tank,liquid gas storage | |
tank,nuclear reactor press shell,turbine and other machines | |
Shipping | length below 5.8m with 20' container, length below 11.8m with 40' container. or Bulk shipping. |
Company Information
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.
After-sale service | l 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. |
l 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. |
Product Show
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 do alloying elements affect the properties of special steel?
- The properties of special steel are greatly influenced by alloying elements. By incorporating specific elements into the steel composition, it is possible to achieve a variety of desirable characteristics. To begin with, the addition of alloying elements can enhance the steel's strength and hardness. For instance, chromium, nickel, and molybdenum can improve the steel's resistance to deformation and overall toughness. This is especially vital in situations where the steel needs to withstand high temperatures, pressure, or mechanical stress. Furthermore, alloying elements can boost the corrosion resistance of special steel. Elements like chromium, nickel, and copper create a protective oxide layer on the steel's surface, preventing rusting or corrosion. This is of particular importance in industries such as marine, oil and gas, and chemical processing, where exposure to corrosive environments is common. Moreover, alloying elements can influence the steel's weldability, machinability, and heat treatability. For example, manganese and silicon can enhance the weldability of steel, facilitating the joining of different components. On the other hand, vanadium and tungsten can enhance the steel's ability to maintain its hardness even when subjected to high temperatures, making it suitable for applications involving heat treatment. Additionally, alloying elements can affect the electrical and magnetic properties of steel. Elements like nickel and cobalt can improve the steel's magnetic properties, making it suitable for use in electrical transformers or magnetic devices. Conversely, aluminum and titanium can enhance the steel's electrical conductivity, making it ideal for electrical wiring or conductive components. In conclusion, alloying elements have a significant impact on the properties of special steel. They can enhance its strength, hardness, corrosion resistance, weldability, heat treatability, electrical conductivity, and magnetic properties. By carefully selecting and controlling the alloying elements, manufacturers can customize the steel's properties to meet the specific requirements of different industries and applications.
- Q:What are the different methods of controlling the grain size in special steel?
- There are several methods to control the grain size in special steel, aiming to achieve the desired mechanical properties and performance. Some of these methods include: 1. Alloying: By carefully selecting and controlling the composition of alloying elements in the steel, the grain size can be controlled. For example, elements such as niobium, vanadium, and titanium can effectively refine the grain size. 2. Heat treatment: The heat treatment process plays a crucial role in controlling the grain size. Techniques like annealing, normalizing, and quenching can be employed to manipulate the grain size. For instance, slow cooling during annealing promotes the growth of larger grains, while rapid cooling during quenching can lead to smaller grain sizes. 3. Deformation processing: Applying mechanical deformation, such as rolling, forging, or extrusion, can help refine the grain structure. These processes induce strain and promote the formation of smaller and more uniform grains. 4. Grain growth inhibitors: Adding certain elements to the steel, such as aluminum or zirconium, can act as grain growth inhibitors. These elements form fine particles that impede grain growth during heat treatment, resulting in a smaller grain size. 5. Transformation temperature control: By controlling the transformation temperature during heat treatment, the grain size can be manipulated. For example, lowering the austenitizing temperature can produce a finer grain structure in the final product. 6. Rapid solidification: Utilizing techniques like spray forming or rapid quenching can result in an ultrafine-grained microstructure. The rapid cooling prevents grain growth, leading to a fine and homogeneous grain structure. 7. Severe plastic deformation (SPD) techniques: SPD techniques, such as equal channel angular pressing (ECAP) or high-pressure torsion (HPT), can impose significant strain on the material, leading to a refined grain structure. These techniques are typically used for producing ultrafine-grained or nanostructured steels. It is important to note that the choice of the method for controlling grain size in special steel depends on the desired properties, the alloy composition, and the intended application of the final product.
- Q:Can special steel be used in the recycling industry?
- Yes, special steel can be used in the recycling industry. Special steel, also known as alloy steel, is often used in the manufacturing of various products, including automobiles, construction materials, and industrial equipment. When these products reach the end of their life cycle, special steel can be recycled and reused in the production of new goods. The recycling industry plays a crucial role in reducing waste and conserving resources, and special steel can contribute to this sustainable practice.
- Q:Can special steel be machined easily?
- No, special steel is typically harder and tougher than standard steel, making it more difficult to machine.
- Q:What are the common failures or issues with special steel?
- There are several common failures or issues that can occur with special steel. One of the most common issues is corrosion. Special steel, like any other type of steel, can be prone to corrosion when exposed to certain environmental conditions, such as moisture or aggressive chemicals. This can lead to a decrease in its structural integrity and overall performance. Another common failure is fatigue. Special steel is often used in applications that require high strength and durability. However, repetitive loading or stress can cause the material to develop cracks or fractures over time, leading to fatigue failure. This can be particularly problematic in industries such as aerospace or automotive, where components are subjected to constant cyclic loading. In addition, improper heat treatment can result in failure. Special steel often requires specific heat treatments to achieve desired properties such as hardness or toughness. If the heat treatment process is not carried out correctly, it can lead to inconsistent material properties, resulting in reduced performance or premature failure. Welding issues can also occur with special steel. Welding is commonly used to join different components or structures made of special steel. However, if proper welding techniques and procedures are not followed, it can result in the formation of defects such as weld cracks, porosity, or inadequate fusion. These defects can weaken the weld joint and compromise the overall integrity of the structure. Lastly, dimensional instability can be a problem with special steel. Certain types of special steel, such as those with high carbon content, can exhibit dimensional changes when subjected to temperature variations. This can lead to distortion or warping of the material, affecting its fit, function, or assembly with other components. To mitigate these failures or issues with special steel, it is crucial to follow proper material selection, design, manufacturing, and maintenance practices. Conducting thorough inspections, implementing appropriate corrosion protection measures, and ensuring proper heat treatment and welding procedures can help minimize the occurrence of these failures and enhance the performance and longevity of special steel components.
- Q:Can special steel be used in the paper manufacturing industry?
- Yes, special steel can be used in the paper manufacturing industry. Special steels, such as stainless steel, can be used to make various components and equipment used in the paper manufacturing process. These steels offer excellent corrosion resistance, high strength, and durability, making them suitable for applications like paper machine parts, rollers, blades, and screens. Additionally, special steels can withstand high temperatures and mechanical stress, enhancing the overall efficiency and reliability of paper manufacturing operations.
- Q:How does special steel perform in high-pressure hydrogen environments?
- Special steel performs well in high-pressure hydrogen environments due to its high strength, corrosion resistance, and ability to withstand hydrogen embrittlement. It is designed to handle the extreme conditions associated with hydrogen, such as high temperatures and pressures, without compromising its structural integrity. Additionally, special steel alloys are often used in hydrogen storage systems, pipelines, and fuel cell components, demonstrating their reliability and effectiveness in such environments.
- Q:What are the mechanical properties of special steel?
- Enhanced mechanical properties are possessed by special steels, also known as alloy steels, in comparison to regular carbon steels. These properties differ based on the concentration and specific alloying elements. Some common mechanical properties of special steel are as follows: 1. High tensile strength: Special steels are recognized for their exceptional strength, making them suitable for applications requiring high load-bearing capacity. The tensile strength of these steels can vary from 500 MPa to over 2,000 MPa, depending on the composition. 2. Improved hardness: The inclusion of alloying elements in special steels can significantly increase their hardness. This property is desirable for applications that demand resistance to wear and abrasion. Special steels can achieve hardness levels ranging from 200-600 HB (Brinell hardness), depending on the specific alloy composition and heat treatment. 3. Good toughness: Special steels commonly exhibit good toughness, which refers to their ability to absorb energy before fracturing. This property is crucial for components subjected to impact or dynamic loading. The combination of high strength and toughness makes special steels suitable for demanding applications such as automotive parts or industrial machinery. 4. Excellent fatigue resistance: Special steels are engineered to withstand cyclic loading without failure. They display enhanced fatigue resistance, enabling them to endure repeated stress cycles without compromising their structural integrity. This property makes special steels ideal for critical components in the aerospace, automotive, and machinery industries. 5. Superior corrosion resistance: Depending on the alloy composition, special steels can offer improved corrosion resistance compared to regular carbon steels. The addition of elements like chromium, nickel, or molybdenum aids in the formation of protective oxide layers on the surface, preventing corrosion and increasing durability. 6. High temperature resistance: Certain special steels are specifically formulated to perform well at elevated temperatures. They possess excellent heat resistance and can retain their mechanical properties even under extreme temperatures. This property is crucial for applications such as turbine blades, exhaust systems, or high-temperature furnaces. It is important to note that the specific mechanical properties of special steel can vary significantly depending on the specific alloy composition, heat treatment, and processing techniques employed. Therefore, it is essential to consult the material specifications or seek expert advice to determine the exact mechanical properties of a particular special steel.
- Q:What are the properties of special steel?
- Special steel has several unique properties that make it highly desirable in various industries. Firstly, it possesses exceptional strength and durability, allowing it to withstand high levels of stress, pressure, and temperature. This property makes it suitable for applications in construction, automotive, and aerospace sectors where strength and reliability are crucial. Additionally, special steel offers excellent corrosion resistance, ensuring its longevity even in harsh environments. It is also known for its excellent machinability, weldability, and formability, making it easy to work with and shape into desired forms. Furthermore, special steel exhibits good magnetic properties, making it ideal for use in electrical components and magnetic devices. Overall, the properties of special steel make it a versatile material that can be customized for specific applications, offering exceptional performance and reliability.
- Q:Can special steel be used in the production of springs for watches?
- Yes, special steel can be used in the production of springs for watches. Special steel, such as stainless steel or high-carbon steel, is often preferred for making watch springs due to its durability, corrosion resistance, and ability to retain its shape and elasticity over time.
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Grade Q345 HR Steel Coil with High Quality and Low Price
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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