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:Can special steel be used in the power generation equipment manufacturing industry?: Yes, special steel can be used in the power generation equipment manufacturing industry. Special steel possesses unique properties such as high strength, resistance to corrosion, and high temperature resistance, making it suitable for the construction of components and structures used in power generation equipment. These include turbine blades, generator shafts, pressure vessels, and boiler tubes, among others. Special steel's exceptional characteristics ensure the reliability, efficiency, and durability of power generation equipment, making it an essential material in the industry.

Q:How does special steel contribute to the aerospace industry?: Special steel contributes to the aerospace industry by providing excellent strength, durability, and high-temperature resistance. It is crucial in manufacturing aircraft components such as engine parts, landing gear, and structural elements. Special steel's unique properties enable lighter and more fuel-efficient aircraft, enhancing performance and reducing maintenance costs. Additionally, its corrosion resistance ensures the longevity and safety of aerospace structures, making it an essential material in the industry.

Q:What are the different case hardening grades of special steel?: Special steel offers a variety of case hardening grades, each with its own distinct properties and uses. Some of the commonly employed grades are: 1. 8620: This grade is commonly utilized for high-stress applications like gears and shafts. Its remarkable toughness and resistance to wear make it ideal for parts requiring both durability and strength. 2. 9310: Aerospace applications often rely on this grade due to its high strength and resistance to fatigue. It is frequently employed for gears, bearings, and components demanding exceptional toughness and load-carrying capacity. 3. 4340: Known for its hardenability and high strength, this grade is suitable for parts necessitating great tensile strength and impact resistance, such as crankshafts, connecting rods, and gears. 4. 20MnCr5: This grade finds frequent use in the production of gears, camshafts, and components requiring high surface hardness and resistance to wear. It boasts excellent case-hardening properties and good core strength. 5. EN36C (also referred to as 655M13): This grade is commonly employed for axles, shafts, and crankshafts requiring high tensile strength. Its good hardenability and exceptional toughness make it suitable for heavy-duty applications. To ensure the right grade is chosen for a specific project, it is crucial to consider the application requirements, including desired hardness, strength, and wear resistance. Seeking advice from a metallurgist or materials science expert can aid in selecting the appropriate case hardening grade.

Q:How does special steel compare to other materials?: Special steel, also known as alloy steel, exhibits exceptional strength, durability, and resistance to wear and corrosion. When compared to other materials, such as regular steel, aluminum, and plastic, special steel stands out for its superior mechanical properties. Firstly, special steel offers higher tensile strength and hardness, making it ideal for applications requiring heavy-duty performance. Its resistance to deformation and ability to withstand high pressures and temperatures make it suitable for use in industries like aerospace, automotive, and construction. Moreover, special steel possesses excellent wear resistance, making it suitable for applications subject to friction, abrasion, and impact. This property minimizes the need for frequent repairs or replacements, resulting in cost savings and improved efficiency. In terms of corrosion resistance, special steel surpasses regular steel, which is prone to rusting when exposed to moisture or aggressive environments. Its composition includes elements such as chromium, nickel, and molybdenum, which form a protective layer on the surface, preventing corrosion and extending the material's lifespan. Compared to materials like aluminum and plastic, special steel has the advantage of being more robust and less prone to deformation or breakage. While aluminum is lightweight, it lacks the strength and hardness of special steel, limiting its suitability for heavy-duty applications. Plastic, on the other hand, offers lower strength and durability compared to special steel, making it less suitable for demanding tasks. Furthermore, special steel can be easily machined, fabricated, and welded, allowing for versatile applications across various industries. Its flexibility in terms of shaping and forming makes it a preferred choice in the manufacturing of components and structures. Overall, special steel outperforms other materials in terms of strength, durability, wear resistance, corrosion resistance, and versatility. Its exceptional properties make it an essential material in demanding industries where reliability and performance are paramount.

Q:How is shock-resistant alloy steel used in the production of impact-resistant parts?: Shock-resistant alloy steel is used in the production of impact-resistant parts due to its unique properties that make it highly resistant to deformation and fracture under high impact loads. The alloy steel's composition includes elements such as chromium, nickel, and molybdenum, which enhance its toughness and durability. These properties allow the alloy steel to absorb and disperse the energy generated during impact, effectively protecting the parts from damage. Additionally, the shock-resistant alloy steel's high strength enables it to withstand repeated impacts without losing its structural integrity, making it an ideal material for manufacturing impact-resistant parts used in various industries, including automotive, aerospace, and construction.

Q:What properties make special steel unique?: Special steel, also known as alloy steel, possesses unique properties that set it apart from other types of steel. Firstly, special steel is distinguished by its exceptional strength and hardness. It is engineered to have a high resistance to deformation, making it suitable for applications that require robust materials. Whether in construction, automotive, or aerospace industries, special steel provides the necessary durability and reliability. Another remarkable property of special steel is its superior corrosion resistance. By incorporating certain alloying elements such as chromium, nickel, or molybdenum, this type of steel becomes highly resistant to rust and other forms of corrosion. As a result, special steel is often used in marine environments, chemical plants, and oil and gas industries where exposure to harsh conditions is prevalent. Furthermore, special steel demonstrates excellent heat resistance. It can withstand high temperatures without losing its strength or structure, making it suitable for applications in extreme heat environments, such as power generation or furnace components. This property allows special steel to be utilized in critical situations where other materials may fail or degrade. Special steel is also known for its versatility and adaptability. With various alloying elements and heat treatment processes, it can be tailored to meet specific requirements of different industries. This flexibility makes it possible to create specialized alloys with unique properties, such as improved machinability, wear resistance, or enhanced magnetic properties, catering to a wide range of applications. In conclusion, the properties that make special steel unique are its exceptional strength and hardness, superior corrosion resistance, excellent heat resistance, and its versatility in being tailored to specific requirements. These properties make special steel an invaluable material in numerous industries, enabling the development of innovative and reliable products.

Q:What are the corrosion resistance properties of special steel?: Special steel has excellent corrosion resistance properties due to the addition of specific alloying elements such as chromium, nickel, and molybdenum. These alloying elements create a protective layer on the surface of the steel, preventing the material from reacting with its surrounding environment. This makes special steel highly resistant to corrosion, even in harsh conditions such as exposure to chemicals, moisture, and high temperatures. Additionally, special steel can retain its corrosion resistance properties over long periods, making it a reliable choice for various applications in industries such as construction, automotive, and aerospace.

Q:How does precipitation hardening enhance the strength of special steel?: Precipitation hardening, also known as age hardening, is a heat treatment process that enhances the strength of special steel alloys. This process involves a series of steps that result in the formation of fine particles or precipitates within the material's microstructure. The strength of special steel is primarily determined by the arrangement and interaction of its atoms. In its initial state, the alloy's atoms are distributed randomly, resulting in a relatively soft and ductile material. However, through precipitation hardening, the formation of precipitates during heat treatment plays a crucial role in strengthening the steel. The process begins by heating the steel to a high temperature, known as solution treatment or aging temperature. This temperature allows the atoms to dissolve and form a solid solution. The alloy is then rapidly cooled to retain the supersaturated state of the solution. Following the rapid cooling, the steel is subjected to a lower temperature, known as aging temperature. At this stage, the dissolved atoms begin to migrate and cluster together, forming small precipitates within the material's microstructure. These precipitates act as obstacles to the movement of dislocations, which are the primary carriers of plastic deformation in metals. The presence of these precipitates hinders the dislocation movement, making it more difficult for them to glide through the crystal lattice. As a result, the strength of the steel is significantly enhanced. The dislocation obstacles provided by the precipitates increase the resistance to deformation, resulting in improved hardness and strength. Furthermore, the size, distribution, and homogeneity of the precipitates play a crucial role in determining the strength enhancement. Smaller and more uniform precipitates provide a higher density of obstacles, leading to a greater strengthening effect. Additionally, the precipitation hardening process also influences other material properties, such as corrosion resistance and toughness. In conclusion, precipitation hardening enhances the strength of special steel by creating fine precipitates within the material's microstructure. These precipitates act as obstacles to dislocation movement, increasing the resistance to deformation and resulting in improved hardness and strength. This heat treatment process plays a crucial role in the development of high-performance special steel alloys used in various industries.

Q:What is the tensile strength of special steel?: The tensile strength of special steel can vary depending on the specific alloy and manufacturing process, but it is generally much higher than that of regular steel.

Q:How does special steel perform in terms of corrosion resistance?: Special steel performs exceptionally well in terms of corrosion resistance. It is specifically designed and engineered to have enhanced resistance against corrosion compared to standard steel. This is achieved through various alloying elements and specific heat treatment processes that create a protective barrier against corrosive elements such as moisture, chemicals, and atmospheric conditions. As a result, special steel exhibits excellent durability and longevity even in corrosive environments, making it a preferred choice in industries where corrosion resistance is crucial, such as marine, oil and gas, and chemical industries.

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