Grade SCM440 Forged Alloy Steel Round Bar

Grade SCM440 Forged Alloy Steel Round Bar System 1

Grade SCM440 Forged Alloy Steel Round Bar System 2

Grade SCM440 Forged Alloy Steel Round Bar System 3

Grade SCM440 Forged Alloy Steel Round Bar System 4

Grade SCM440 Forged Alloy Steel Round Bar

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 3 m.t.

Supply Capability:: 100000 m.t./month

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Grade SCM440 Forged Alloy Steel Round Bar

Details Information of Grade SCM440 Forged Alloy Steel Round Bar

Name	SCM440 Carbon 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 /
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

Carbon structure round bar	Q195 Q235A Q235B 10# 20#-55# S45CB
Low alloy high strength round bar	Q345A/Q345C/Q345D Q345B Q345E
Alloy structure round bar	SAE51B20 20Cr 40Cr 40CrV 20CrMo/30CrMo/35CrMo/42CrMo 20CrMoA/30CrMoA/35CrMoA/42CrMoA/42Cr ML20CrMo/ML30CrMo/ML35CrMo/ML42CrMo B7/SCM435-440 20MnTiB 20CrMnMo 20CrMoH 42CrMoH 40MnB/40MnBH 30Mn2-40Mn2 27SiMn 50CrVA 30CrMnTi
Pinion steel	20CrMnTi 20CrMnTiH 20CrMnTiHCS/20CrMnTiHLD Q20CrMnTi-1/Q20CrMnTi-2
Sucker rod	20-35CrMoA
Free-cutting steel	GT1215S
Spring steel	60Si2MnA 65Mn
Ball bearing steel	GCr15

Chemical Composition of Grade SCM440 Forged Alloy Steel Round Bar

C	Si	Mn	P	S	Cr	Ni	Cu

0.17-0.24	0.17-0.37	0.35-0.65	≤0.035	≤0.035	≤0.25	≤0.25	≤0.25

Tensile strength (σb/MPa)	Yield strength (σb/MPa)	Elongation (δ5/%)
≥410(42)	≥245(25)	≥25

Company Introduction of Grade SCM440 Forged Alloy Steel Round Bar

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.

Grade SCM440 Forged Alloy Steel Round Bar

Certificates of Grade SCM440 Forged Alloy Steel Round Bar

Grade SCM440 Forged Alloy Steel Round Bar

Packaging & Delivery of Grade SCM440 Forged Alloy Steel Round Bar

Packaging Detail	Sea worthy packing /as per customer's packing instruction
Delivery Detail	15 ~ 40 days after receiving the deposit

Products show of Grade SCM440 Forged Alloy Steel Round Bar

Grade SCM440 Forged Alloy Steel Round Bar

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 main characteristics of spring steel?: Spring steel is a type of high-carbon steel that is specifically designed to possess excellent elasticity and resilience. It is primarily known for its ability to return to its original shape after being bent or deformed, making it ideal for applications where repeated and controlled deflection is required. The main characteristics of spring steel include: 1. High Yield Strength: Spring steel is characterized by its high yield strength, which refers to the amount of stress it can withstand before permanent deformation occurs. This allows it to bear heavy loads and resist bending or breaking under pressure. 2. Excellent Elasticity: One of the most significant characteristics of spring steel is its exceptional elasticity. It can be flexed, twisted, or stretched without permanently deforming, and once the force is released, it returns to its original shape. This property is crucial for applications requiring constant and repetitive motion. 3. Superior Fatigue Resistance: Spring steel is exceptionally resistant to fatigue, meaning it can endure millions of cycles of stress without failing. This characteristic is crucial for products subjected to continuous and repetitive loads, such as springs in automotive suspensions or industrial machinery. 4. Good Hardness and Wear Resistance: Spring steel is typically hardened to enhance its wear resistance. This allows it to withstand abrasion and deformation under harsh conditions, making it suitable for applications that involve friction or impact, such as cutting tools or automotive components. 5. Excellent Formability: Spring steel can be easily formed into various shapes and sizes, making it highly versatile for different applications. It can be cold-drawn, rolled, or heat-treated to achieve specific mechanical properties, allowing manufacturers to customize its characteristics based on their specific requirements. Overall, the main characteristics of spring steel are its high yield strength, excellent elasticity, superior fatigue resistance, good hardness and wear resistance, and exceptional formability. These qualities make it a vital material in a wide range of industries, including automotive, aerospace, construction, and manufacturing.

Q:What are the main applications of special steel in the power storage industry?: Special steel is widely used in the power storage industry for various applications. One of the main uses is in the manufacturing of battery components, such as battery casings, terminals, and connectors, due to its excellent corrosion resistance and high strength. Special steel is also utilized in the production of power transmission and distribution equipment, including transformers, generators, and turbines, where its superior mechanical properties and durability ensure reliable and efficient power generation and transmission. Additionally, special steel is employed in the construction of power storage structures, such as tanks and containers, providing long-lasting protection against environmental factors and maintaining the integrity of stored energy.

Q:What is the maximum temperature that special steel can withstand?: The maximum temperature that special steel can withstand depends on the specific type and composition of the steel. However, special steels are designed to have high heat resistance and can typically withstand temperatures ranging from 800 to 1200 degrees Celsius.

Q:What are the different methods of surface passivation for special steel?: Surface passivation methods for special steel vary in order to enhance its corrosion resistance and overall performance. One popular approach is chemical passivation, where a protective coating is applied to the steel's surface. This coating, composed of substances like chromium oxide or nitric acid, is typically formed through a chemical reaction that creates a protective layer. Chemical passivation is commonly used in industries where the steel is exposed to corrosive environments, such as marine or chemical applications. Another method is mechanical passivation, which involves physically altering the steel's surface to create a protective barrier. This can be achieved through techniques like shot peening or sandblasting, which create a roughened surface that is less prone to corrosion. Mechanical passivation is often employed in situations where the steel is exposed to abrasive or erosive conditions, such as mining or oil drilling. Electrochemical passivation is yet another technique used to passivate special steel surfaces. It entails using an electric current to generate a protective oxide layer on the steel's surface. Processes like electrochemical polishing or anodizing achieve this controlled oxidation. Electrochemical passivation is frequently utilized in industries where the steel is subjected to high temperatures or aggressive chemical environments. Additionally, specialized surface treatments, like plasma or laser surface passivation, are available for special steel. These methods utilize concentrated energy sources to modify the steel's surface and create a protective layer that enhances its corrosion resistance and mechanical properties. Such treatments are typically applied in high-performance applications, such as the aerospace or automotive industries. Ultimately, the choice of surface passivation method for special steel depends on the specific requirements of the application and the desired performance characteristics of the material. Each method has its own advantages and limitations, and factors like cost, time, and environmental impact should be considered when selecting the most suitable method for a particular application.

Q:What are the specific requirements for special steel used in the textile machinery industry?: The special steel requirements for the textile machinery industry can differ based on the specific application and machinery involved. Nevertheless, there are several common requirements in this industry. Firstly, corrosion resistance is crucial as textile machinery is frequently exposed to moisture, chemicals, and other corrosive substances. Therefore, the special steel used must possess excellent corrosion resistance properties to ensure durability and longevity. Secondly, high strength is necessary since textile machinery operates under high loads and stresses. Consequently, the special steel employed must have strong characteristics to withstand these forces and prevent deformation or failure. Furthermore, wear resistance is important as textile machinery involves constant contact between different components, leading to wear and tear. Thus, the special steel utilized should exhibit good wear resistance properties to minimize friction and extend the machinery's lifespan. Additionally, heat resistance is vital as textile machinery often operates at high temperatures due to friction generated during the manufacturing process. Consequently, the special steel used should possess exceptional heat resistance to prevent deformation or loss of mechanical properties under high temperature conditions. Moreover, machinability is necessary for the special steel used in the textile machinery industry. This allows for the production of complex components with precise dimensions, ensuring smooth and efficient machinery operation. Lastly, cost-effectiveness is crucial while meeting all the aforementioned requirements. Manufacturers strive to balance performance and cost to maintain competitiveness in the market without compromising on quality. It is important to note that these requirements can vary depending on the specific application within the textile machinery industry. As a result, manufacturers and engineers must carefully evaluate their machinery's requirements and choose the appropriate special steel accordingly.

Q:How does special steel contribute to the chemical processing industry?: Special steel contributes to the chemical processing industry by offering exceptional resistance to corrosion, high temperatures, and pressure. It is used in the production of various equipment such as valves, pipes, reactors, and heat exchangers, ensuring the safe and efficient handling of corrosive chemicals. Additionally, the unique properties of special steel enable the construction of durable and reliable structures, minimizing downtime and maintenance costs in chemical plants.

Q:How does special steel resist deformation under load?: Special steel resists deformation under load due to its unique properties and composition. It is typically made with higher levels of alloying elements such as chromium, nickel, and molybdenum, which enhance its strength, hardness, and toughness. These alloying elements form strong bonds within the steel's crystal lattice structure, making it more resistant to deformation. Additionally, special steels often undergo heat treatment processes such as quenching and tempering, which further refine their microstructure and increase their ability to withstand loads without deforming. Overall, the combination of alloying elements and heat treatment techniques allows special steel to maintain its shape and structural integrity even under high-stress conditions.

Q:What are the key alloying elements used in special steel?: The specific application and desired properties determine the key alloying elements used in special steel. Some commonly used alloying elements in special steel are chromium, nickel, molybdenum, vanadium, tungsten, and cobalt. To enhance the steel's hardness, wear resistance, and corrosion resistance, chromium is often added. Nickel, on the other hand, increases the steel's strength, toughness, and corrosion resistance. Molybdenum is commonly used to improve the steel's high-temperature strength, resistance to creep, and resistance to corrosion by certain chemicals. Vanadium is added to increase the steel's strength, toughness, and wear resistance, especially at high temperatures. Tungsten is another element used to enhance the steel's high-temperature strength and wear resistance. Cobalt, on the other hand, is often added to improve the steel's strength and toughness, particularly at elevated temperatures. These alloying elements are carefully chosen and added in specific proportions to achieve the desired properties for various applications, including aerospace, automotive, energy, and tooling industries. By incorporating these alloying elements, special steel can be customized to meet specific performance requirements, making it suitable for a wide range of demanding applications.

Q:What are the main applications of special steel in the medical implants?: Special steel is widely used in medical implants due to its unique properties and benefits. The main applications of special steel in medical implants include orthopedic implants such as hip and knee replacements, dental implants, cardiovascular devices like stents and pacemakers, and surgical instruments. The high strength, corrosion resistance, biocompatibility, and ability to be sterilized make special steel an ideal material for these applications, providing long-lasting and reliable solutions for patients in need of medical implants.

Q:How does the heat treatment process affect the properties of special steel?: The heat treatment process can significantly affect the properties of special steel. It involves heating the steel to a specific temperature and then cooling it at a controlled rate to alter its microstructure. This process can change the steel's hardness, strength, toughness, and even its resistance to corrosion. By manipulating the heat treatment parameters, such as temperature, time, and cooling rate, manufacturers can tailor the properties of special steel to meet specific requirements for different applications.

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