JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel

JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel System 1

JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel System 2

JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel System 3

JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel System 4

JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel

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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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JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel

Details Information of JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel

Name	SAE1045 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 JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel

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 JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel

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.

JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel

Certificates of JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel

JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel

Packaging & Delivery of JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel

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

Products show of JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel

JIS SCM440 DIN 42CrMo4 1.7225 Hot rolled AISI 4140 Round Bars Alloy Steel

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 does special steel resist oxidation at high temperatures?: Due to the presence of specific alloying elements and a carefully controlled manufacturing process, special steel is able to resist oxidation at high temperatures. When exposed to oxygen in the air, alloying elements like chromium, nickel, and aluminum form a protective oxide layer on the steel's surface. This layer acts as a barrier, preventing further oxidation. Of these alloying elements, chromium is particularly effective in forming a stable and dense chromium oxide layer. This layer serves as a self-healing mechanism, meaning that if it becomes damaged or scratched, it will quickly regenerate and continue to protect the steel from oxidation. The manufacturing process of special steel involves precise control of composition and heat treatment. This ensures that the steel has a fine and uniform microstructure, minimizing the presence of impurities or defects that could speed up oxidation. Moreover, the steel often undergoes various heat treatments, such as annealing or quenching, which further enhance its resistance to oxidation. In conclusion, the combination of alloying elements, controlled composition, and specific manufacturing processes allow special steel to withstand oxidation at high temperatures. This makes it an ideal choice for applications in industries like aerospace, power generation, and petrochemical.

Q: What are the environmental impacts of using special steel?: Special steel can cause several environmental effects. To begin with, the extraction of raw materials like iron ore and coal for special steel production results in deforestation, destruction of habitats, and loss of biodiversity. This mining process also releases pollutants into the air, soil, and water, contributing to pollution. Special steel production also emits greenhouse gases, especially carbon dioxide (CO2), during manufacturing. The high temperatures required to melt and shape the steel, along with the energy-intensive processes involved, lead to significant CO2 emissions that contribute to climate change. Moreover, the transportation of special steel has its own environmental consequences. The shipping and logistics involved in transporting the steel from production facilities to end-users generate additional greenhouse gas emissions, air pollution, and fuel consumption. Additionally, the disposal of special steel products at the end of their lifecycle poses environmental challenges. If not properly recycled or disposed of, steel products can end up in landfills, taking up valuable space and potentially releasing harmful substances into the environment. Despite these environmental impacts, it is important to acknowledge that special steel is frequently used in various industries due to its durability, strength, and resistance to corrosion. Efforts are being made to mitigate these impacts by adopting cleaner production methods, such as recycling and utilizing renewable energy sources in the steel manufacturing process. Additionally, initiatives like carbon capture and storage are being explored to reduce greenhouse gas emissions from steel production. In conclusion, although special steel offers numerous benefits, it is crucial to balance these advantages with the need to minimize its environmental impacts through sustainable production and responsible disposal practices.

Q: How is special steel used in the manufacturing of bearings?: Due to its unique properties, special steel is utilized in the production of bearings, which are vital components employed in various industries. These bearings serve the purpose of reducing friction between moving parts, promoting smooth motion, and supporting heavy loads. The utilization of special steel guarantees exceptional performance and longevity. For the production of bearings, the preferred choice of special steel includes stainless steel and high-carbon chromium steel. This selection is based on the remarkable strength, hardness, and resistance to corrosion that these types of steel possess. These properties enable the bearings to endure heavy loads, withstand wear and tear, and operate effectively in challenging environments. The manufacturing process for bearings involves shaping and heat treatment. Initially, special steel is melted and cast into the desired form, typically a ring or a ball. Subsequently, the steel undergoes various heat treatment procedures like annealing, quenching, and tempering to enhance its hardness, toughness, and overall mechanical properties. This heat treatment ensures that the steel is adequately hardened to endure the stress and friction it will encounter during operation. Once the steel has undergone appropriate heat treatment, it is machined and ground to attain precise dimensions and smooth surfaces. This step is vital to ensure that the bearings possess the necessary tolerance and can rotate smoothly without any interference. Special steel's machinability and grindability simplify the achievement of the required accuracy and surface finish. Following the machining process, the bearings can be assembled with other components and lubricated to ensure proper lubrication and minimize friction. Special steel's corrosion resistance is particularly valuable at this stage as it shields the bearings from rust and degradation caused by moisture or aggressive environments. In conclusion, special steel is chosen for the production of bearings due to its exceptional strength, hardness, and corrosion resistance. These properties enable the bearings to withstand heavy loads, resist wear, and function effectively in challenging conditions. With the aid of its excellent machinability and grindability, special steel guarantees the attainment of the necessary precision and surface finish. Overall, special steel plays a pivotal role in the production of high-quality bearings that enable efficient and reliable motion in various industries.

Q: Can special steel be used for precision instruments?: Yes, special steel can be used for precision instruments. Special steel, known for its high strength, durability, and resistance to corrosion, is often used in the manufacturing of precision instruments such as surgical tools, watches, measuring devices, and scientific equipment. Its unique properties allow for precise and accurate performance, making it an ideal material choice for precision instruments.

Q: What are the different forging techniques for special steel parts?: There are several forging techniques that can be used for special steel parts, including open die forging, closed die forging, and ring rolling. Open die forging involves shaping the steel by repeated hammering or pressing between flat dies, allowing for a range of shapes and sizes. Closed die forging, on the other hand, utilizes specially designed dies to shape the steel into a specific form, resulting in higher precision. Ring rolling involves shaping a circular piece of steel into a seamless ring by applying pressure from radial rolls. These techniques offer varying advantages depending on the desired shape, size, and properties of the special steel part being forged.

Q: What are the different methods of joining special steel components?: Various techniques exist for joining special steel components, each offering unique advantages and applications. Welding, brazing, soldering, mechanical fastening, and adhesive bonding are among the most commonly used methods. 1. Welding represents a widely employed method for joining special steel components. It involves melting the base metals and adding a filler material to create a robust bond. Depending on the specific requirements and properties of the steel components, different welding techniques like arc welding, gas welding, or laser welding can be utilized. 2. Brazing utilizes a filler material with a lower melting point than the base metals. This material is heated and distributed between the components, forming a strong bond as it solidifies. Brazing is particularly suitable for high-temperature applications and can be performed using a torch, furnace, or induction heating. 3. Soldering is similar to brazing but employs a lower melting point filler material known as solder. It finds common use in electrical and electronic applications, as well as for joining small or delicate steel components. Soldering necessitates less heat and can be accomplished using a soldering iron or hot air gun. 4. Mechanical fastening involves joining components using mechanical means such as screws, bolts, nuts, or rivets. This method is often preferred when disassembly or reassembly is necessary, as it allows for easy removal and replacement of components. Mechanical fastening is suitable for applications requiring a strong and reliable joint, especially when welding or brazing may not be feasible. 5. Adhesive bonding is another method employed for joining special steel components. It entails applying an adhesive material to the mating surfaces, which then cures or hardens to create a robust bond. Adhesive bonding is commonly used when a continuous joint is required or when joining dissimilar materials. It offers advantages in applications necessitating vibration damping or sealing. The selection of the appropriate joining method depends on various factors such as the specific requirements of the application, the properties of the steel components, and the desired strength and durability of the joint. Each method has its own strengths and limitations.

Q: How does special steel contribute to the safety of infrastructure?: Special steel plays a crucial role in enhancing the safety of infrastructure in various ways. Firstly, it offers exceptional strength and durability, allowing for the construction of robust and resilient structures. Whether it is used in bridges, buildings, or tunnels, special steel provides the necessary structural integrity to withstand extreme loads, such as heavy traffic, strong winds, seismic activities, or even potential terrorist attacks. Moreover, special steel possesses excellent corrosion resistance properties, making it suitable for infrastructure projects exposed to harsh environmental conditions. By preventing rust and decay, it extends the lifespan of structures and reduces the need for costly maintenance and repairs. This is especially important in coastal areas, where infrastructure is subjected to the corrosive effects of saltwater. In addition to its strength and corrosion resistance, special steel also offers exceptional fire resistance. It has a high melting point, which allows it to maintain its structural integrity under extreme temperatures. This characteristic is critical for infrastructure safety, as it provides additional time for evacuation and emergency response in case of a fire. Furthermore, special steel can contribute to the safety of infrastructure by enabling innovative design solutions. Its versatility allows for the creation of complex and efficient structures, such as long-span bridges or skyscrapers. These designs often incorporate special steel components, such as high-strength beams or columns, which enhance the overall stability and safety of the infrastructure. Overall, special steel's exceptional strength, corrosion resistance, fire resistance, and design flexibility make it an essential material for ensuring the safety and reliability of infrastructure. By utilizing special steel in construction projects, engineers and architects can create structures that can withstand various challenges, ultimately protecting the lives and well-being of the people who utilize them.

Q: Can special steel be used for making oil and gas industry components?: Yes, special steel can be used for making oil and gas industry components. Special steel alloys are often preferred in this industry due to their excellent strength, corrosion resistance, and high temperature properties. These components are subjected to harsh conditions and require materials that can withstand extreme pressures, temperatures, and corrosive environments. Special steel alloys, such as stainless steel or superalloys, are specifically designed to meet these demanding requirements, making them suitable for manufacturing oil and gas industry components.

Q: How does special steel contribute to improving product efficiency in energy-intensive processes?: Special steel plays a crucial role in improving product efficiency in energy-intensive processes due to its unique properties. Its superior strength, durability, and heat resistance allow for the design and manufacturing of more efficient and high-performing equipment. By using special steel components, energy-intensive processes can operate at higher temperatures, withstand harsh conditions, and reduce material wear, resulting in increased productivity, reduced downtime, and ultimately, improved energy efficiency.

Q: Can special steel be used in the pharmaceutical manufacturing industry?: Yes, special steel can be used in the pharmaceutical manufacturing industry. Special steel, such as stainless steel, offers excellent corrosion resistance, durability, and cleanability, making it suitable for various applications in pharmaceutical manufacturing, including equipment and machinery used in production, storage, and transportation of pharmaceutical products. Special steel's properties ensure compliance with strict hygiene and quality standards in the industry.

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