Special Steel Forged Carbon Steel SS400 Q235

Special Steel Forged Carbon Steel SS400 Q235 System 1

Special Steel Forged Carbon Steel SS400 Q235

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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Product Information

1 Grade Comparison:

GB	ASTM	JIS	EN
Q235	Grade D	SS400	S235JR(1.0038) /S235JO(1.0114) /S235J2(1.0117)

2 Chemical Composition:

Q235A

C	Mn	Si	S	P
0.14-0.22	0.30-0.65	≤0.30	≤0.050	≤0.045

Q235B

C	Mn	Si	S	P
0.12-0.20	0.30-0.70	≤0.30	≤0.045	≤0.045

Q235C

C	Mn	Si	S	P
≤0.18	0.35-0.80	≤0.30	≤0.035	≤0.035

Q235D

C	Mn	Si	S	P
≤0.17	0.35-0.80	≤0.30	≤0.035	≤0.035

3 Brief Introduction:

Dimension	13-350mm
Length	2-13m or as per your request
Delivery condition	Hot rolled
Heat Treatment	Normalizing, Annealing, Quenching
Packing	Standard seaworthy packing or according to your requirements

4 Mechanical Property:

Thickness/diameter(mm)	Tensile strength	Yield strength	Elongation rate
≤16	375MPa-500MPa	≥235MPa	≥26%
16-40		≥225MPa	≥25%
40-60		≥215MPa	≥24%
60-100		≥205MPa	≥23%
100-150		≥195MPa	≥22%
>150		≥185MPa	≥21%

Product Show

Special Steel Forged Carbon Steel SS400 Q235

Workshop Show

Special Steel Forged Carbon Steel SS400 Q235

Shipping

1. FedEx/DHL/UPS/TNT for samples, Door-to-Door;

2. By Air or by Sea for batch goods, for FCL; Airport/ Port receiving;

3. Customers specifying freight forwarders or negotiable shipping methods!

Delivery Time: 3-7 days for samples; 5-25 days for batch goods.

Payment Terms

1.Payment: T/T, L/C, Western Union, MoneyGram,PayPal; 30% deposits; 70% balance before delivery.

2.MOQ: 1pcs

3.Warranty : 3 years

4.Package Informations: 1) EXPORT, In 20 feet (GW 25 ton) or 40 feet Container (GW 25 ton)

2)as customer's requirement

Why choose us?

(1) The leading exporter in China special steel industry.

(2) Large stocks for various sizes, fast delivery date.

(3) Good business relationship with China famous factories.

(4) More than 7 years steel exporting experience.

(5) Good after-sales service guarantee.

Q:How does special steel contribute to reducing product costs?: Special steel contributes to reducing product costs in several ways. Firstly, special steel is known for its high strength and durability, which allows manufacturers to design and produce products that have a longer lifespan. This reduces the need for frequent replacements or repairs, thus saving costs in the long run. Additionally, special steel can be customized to meet specific requirements, allowing for the production of lighter and more efficient products. This can lead to savings in terms of raw material usage, transportation costs, and energy consumption. Moreover, special steel often has excellent corrosion resistance, reducing the need for additional protective coatings or maintenance, which can also result in cost savings. Overall, the utilization of special steel in manufacturing processes helps optimize product performance, longevity, and efficiency, thereby contributing to reducing product costs.

Q:How does special steel contribute to the strength of products?: Special steel plays a significant role in enhancing the strength of products in multiple ways. To begin with, engineers design special steel to possess improved mechanical properties, including high tensile strength, toughness, and hardness. These qualities make it particularly suitable for industries such as construction, automotive manufacturing, and aerospace engineering where strength is of utmost importance. Furthermore, special steel can be customized to meet specific requirements, allowing manufacturers to adjust its composition and properties to suit their products. This adaptability guarantees that the steel utilized in different components is optimized for utmost strength, durability, and performance. Additionally, special steel undergoes various heat treatment processes like quenching and tempering, which further bolster its strength. These treatments modify the steel's microstructure, resulting in enhanced hardness and resistance to wear and fatigue. Consequently, products made from special steel can endure heavy loads, harsh environments, and repetitive stress, ensuring their long-term reliability and durability. Moreover, special steel often exhibits remarkable corrosion resistance, making it well-suited for applications exposed to corrosive environments such as the marine or chemical industries. By preventing material degradation, corrosion resistance enhances the overall strength and lifespan of the product. In conclusion, special steel contributes significantly to product strength through its enhanced mechanical properties, customizable composition, heat treatment processes, and corrosion resistance. These factors collectively ensure that products made from special steel can withstand high stress, extreme conditions, and deliver exceptional performance, making them indispensable in various industries.

Q:How is special steel used in the aerospace sector?: Special steel is used in the aerospace sector for various applications such as manufacturing engine components, landing gear, and structural parts. Its high strength-to-weight ratio, corrosion resistance, and ability to withstand extreme temperatures make it ideal for enhancing the performance, durability, and safety of aircraft.

Q:What are the different methods of improving the machinability of special steel?: There are several methods available for improving the machinability of special steel. One approach is to modify the steel composition by adding elements such as sulfur, lead, or selenium, which can help break the chips during the machining process. Another method involves using coatings or surface treatments on the steel to reduce friction and heat generation during machining. Additionally, optimizing the cutting parameters, such as speed, feed rate, and cutting tool geometry, can also enhance machinability. Lastly, post-machining processes like stress relieving or heat treatment can be employed to improve the overall machinability of the special steel.

Q:What are the challenges in machining high-speed special steel?: Machining high-speed special steel poses several challenges, primarily due to its hardness and heat resistance. The high hardness of the steel makes it difficult to cut and shape, requiring specialized tools and techniques. Additionally, the steel's heat resistance can cause excessive heat generation during the machining process, leading to tool wear and reduced cutting performance. To overcome these challenges, manufacturers need to use high-quality cutting tools, employ effective cooling methods, and carefully optimize machining parameters to ensure precise and efficient machining of high-speed special steel.

Q:How is special steel used in the medical manufacturing process?: Special steel is used in the medical manufacturing process for a variety of applications, including the production of surgical instruments, implants, and medical devices. The unique properties of special steel, such as its corrosion resistance, biocompatibility, and strength, make it ideal for creating high-quality and durable medical products. Additionally, special steel can be easily sterilized, ensuring the safety and hygiene of medical equipment.

Q:How does special steel contribute to reducing weight in applications?: Special steel contributes to reducing weight in applications through its unique properties and manufacturing processes. Special steel alloys are engineered to have high strength-to-weight ratios, allowing them to provide the same structural integrity as conventional steel but at a reduced weight. These alloys often contain elements like chromium, nickel, and molybdenum, which enhance their strength and durability. Additionally, special steel can be manufactured through advanced techniques such as hot rolling, cold rolling, and heat treatment. These processes further refine the steel's microstructure, improving its mechanical properties while maintaining a lightweight composition. By using special steel in various applications, such as automotive parts, aerospace components, and construction materials, manufacturers can achieve weight reduction without compromising performance or safety.

Q:What are the different testing methods for special steel?: There are several testing methods that are commonly used for special steel to ensure its quality and performance. These methods include: 1. Chemical Analysis: This method involves determining the chemical composition of the steel, including the presence of various elements and impurities. It helps in verifying the steel's adherence to specific chemical composition requirements. 2. Mechanical Testing: This testing method is used to evaluate the mechanical properties of special steel, such as its strength, ductility, hardness, and toughness. It includes tests like tensile testing, impact testing, hardness testing, and fatigue testing. 3. Microstructure Analysis: Microscopic examination of the steel's microstructure is essential to assess its internal structure, grain size, and shape. Techniques like optical microscopy, electron microscopy, and X-ray diffraction are used to observe the steel's microstructure and identify any defects or abnormalities. 4. Non-Destructive Testing (NDT): NDT methods are used to inspect the steel without causing any damage to it. These methods include ultrasonic testing, magnetic particle testing, liquid penetrant testing, and radiographic testing. They help detect surface and subsurface defects such as cracks, voids, inclusions, and discontinuities. 5. Corrosion Testing: Special steel is often used in applications where resistance to corrosion is crucial. Various corrosion testing methods, such as salt spray testing, electrochemical testing, and immersion testing, are used to evaluate the steel's resistance to corrosion and determine its corrosion rate. 6. Metallography: Metallographic testing involves preparing a cross-section of the steel sample, polishing it, and etching it to reveal its microstructure. It helps in assessing the quality, heat treatment effects, and grain size distribution of the steel. 7. Dimensional and Surface Inspection: This testing method ensures that the special steel meets the required dimensional tolerances and surface quality. Techniques such as dimensional measurement, surface roughness measurement, and visual inspection are used to verify the steel's conformity. By employing these testing methods, manufacturers and quality control personnel can ensure that special steel meets the necessary standards, specifications, and customer requirements.

Q:What are the common heat treatment methods used for special steel?: There are several common heat treatment methods used for special steel to improve its mechanical properties and enhance its performance. Some of these methods include: 1. Annealing: This process involves heating the steel to a specific temperature and then cooling it slowly to relieve internal stresses and create a refined microstructure. Annealing helps to improve the machinability and ductility of the steel. 2. Normalizing: Normalizing is a heat treatment method that involves heating the steel to a temperature above its critical point and then cooling it in still air. This process helps to refine the grain structure of the steel, improve its toughness, and enhance its strength. 3. Quenching: Quenching is a rapid cooling process that involves immersing the steel in a quenching medium, such as water, oil, or polymer. This method is used to increase the hardness and strength of the steel by forming a hard martensitic structure. However, quenching can also introduce internal stresses and reduce the steel's toughness, so it is often followed by tempering. 4. Tempering: Tempering is a heat treatment method that involves reheating the quenched steel to a specific temperature and then cooling it gradually. This process helps to relieve internal stresses, reduce hardness, and improve the toughness and ductility of the steel. Tempering also helps to enhance the steel's resistance to brittle fracture. 5. Austempering: Austempering is a heat treatment method that involves quenching the steel to a temperature just above its martensitic transformation range and then holding it at this temperature until the austenite transforms into bainite. This process produces a unique microstructure that provides a combination of high strength and good toughness. 6. Martempering: Martempering is similar to austempering, but the steel is quenched to a temperature just below its martensitic transformation range and then held at this temperature until the transformation is complete. Martempering produces a microstructure with improved strength and toughness compared to conventional quenching. These heat treatment methods are commonly used for special steel to tailor its properties to specific applications and requirements. The choice of method depends on factors such as the desired mechanical properties, the steel's composition, and the intended use of the final product.

Q:What is the role of special steel in the automotive industry?: Special steel plays a crucial role in the automotive industry by providing strength, durability, and resistance to wear and corrosion for various components. It is used in the production of engine parts, chassis components, transmission systems, and safety features, ensuring enhanced performance, reliability, and safety in vehicles.

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