Special Steel AISI 4140 Round Bar Steel
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
Standard:
AISI,JIS,GB,BS,DIN,API,EN,ASTM
Thickness:
as required
Technique:
Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Extruded,EFW,Spring
Shape:
U Channel,Square,C Channel,Hexagonal,Round
Surface Treatment:
Galvanized,Coated,Copper Coated,Color Coated,Oiled,Dry,Chromed Passivation,Polished,Bright,Black,PVDF Coated
Steel Grade:
Q195,Q215,Q235,Q215B,Q235B,RHB335,HRB400,200 Series,300 Series,400 Series,600 Series,SS400-SS490,10#,20#,A53(A,B)
Certification:
ISO,SGS,BV,IBR,RoHS,CE,API,BSI,UL
Length:
as required
Net Weight:
as required
Chemical Composition(%)
| C | Si | Mn | Cr | Mo | Ni | P | S |
| 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.20 | 0.15-0.25 | ≤0.030 | ≤0.030 | ≤0.030 |
Standard
| GB | AISI | DIN | JIS | ISO |
| 42CrMo | 4140 | 42CrMo4 | SCM440 | 42CrMo4 |
Available Size
| Rolled round bar | φ20-120mm × L |
| Forged round bar | φ130-195mm × L |
Heat Treatment
| Item | Temperature℃ | Hardness |
| quenching | 840-880 | HRC32-34 |
| tempering | 580 | |
| quenching | 900 | HRC54-60 |
| tempering | 150-180 |
Characterstics
| The steel with high strength and toughness, hardenability is better also | |||||||
| After conditioning treatment quenching deformation of small | |||||||
| high fatigue limit and repeated impact resistance |
Applications: The steel is suitable for manufacturing requires a certain strength and toughness of large and medium-sized plastic mold
1, Your advantages?
professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale
2, Test & Certificate?
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem
3, Payment Terms?
30% TT as deposit and 70% before delivery.
Irrevocable L/C at sight.
4, Trading Terms?
EXW, FOB, CIF, FFR, CNF
6, After-sale Service?
WE provides the services and support you need for every step of our cooperation. We're the business partner you can trust.
For any problem, please kindly contact us at any your convenient time.
We'll reply you in our first priority within 24 hours.
- Q: How does special steel perform in power generation applications?
- Special steel is highly regarded in power generation applications due to its exceptional strength, resistance to corrosion, and ability to withstand high temperatures. These qualities make it ideal for the construction of critical components such as turbine blades, steam generators, and boiler tubes. Special steel's superior performance ensures efficient and reliable power generation, contributing to increased productivity and longevity of power plants.
- Q: What are the different low-temperature grades of special steel?
- There are several low-temperature grades of special steel, including but not limited to: austenitic stainless steel, ferritic stainless steel, martensitic stainless steel, and duplex stainless steel. These grades are specifically designed to maintain their strength and toughness at low temperatures, making them suitable for applications in cryogenic environments.
- Q: How does special steel perform in terms of corrosion resistance in marine environments?
- Special steel alloys, specifically designed for marine environments, exhibit excellent corrosion resistance. Due to their higher levels of alloying elements like chromium, nickel, and molybdenum, these steels form a protective oxide layer that prevents rusting and pitting, even when exposed to saltwater and other harsh marine conditions. Their exceptional corrosion resistance ensures prolonged durability, reduced maintenance, and enhanced performance in marine environments.
- Q: What is the importance of heat treatment in special steel?
- Heat treatment is of utmost importance in special steel because it significantly enhances its mechanical properties and overall performance. Special steel, also known as alloy steel, is specifically designed to possess specific characteristics such as high strength, hardness, wear resistance, and toughness, making it suitable for demanding applications in industries like automotive, aerospace, and tooling. The heat treatment process involves controlled heating and cooling of the steel to alter its microstructure, which in turn affects its properties. There are several heat treatment techniques employed, including annealing, tempering, quenching, and hardening, each serving a specific purpose. One key importance of heat treatment in special steel is the ability to increase its hardness. Through techniques like quenching and hardening, the steel can be transformed into a hardened state, where it becomes much stronger and more resistant to abrasion and wear. This is crucial for applications that involve heavy loads, impact, and abrasive environments. Additionally, heat treatment can also improve the toughness and ductility of special steel. By carefully controlling the cooling rate during the heat treatment process, the steel's microstructure can be adjusted to achieve a fine-grained structure, enhancing its toughness and ability to withstand sudden impacts or shocks. This is particularly important in applications where the material needs to absorb energy and resist fractures, such as in structural components or tools. Furthermore, heat treatment can also improve the machinability and dimensional stability of special steel. By subjecting the steel to annealing or tempering processes, internal stresses and residual strains can be relieved, resulting in a more stable and easier-to-machine material. This is crucial in industries where precision and dimensional accuracy are paramount. In conclusion, the importance of heat treatment in special steel cannot be overstated. It is a vital process that allows for the optimization of the steel's mechanical properties, ensuring it meets the specific requirements of demanding applications. By carefully manipulating the microstructure, heat treatment enhances the steel's hardness, toughness, and machinability, making it a versatile and reliable material in various industries.
- 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: Can special steel be used in the production of gearboxes?
- Yes, special steel can be used in the production of gearboxes. Special steel alloys such as alloy steel or stainless steel provide enhanced strength, durability, and resistance to wear and corrosion, making them ideal for manufacturing high-performance gearboxes that can withstand heavy loads and harsh operating conditions.
- Q: Can special steel be recycled?
- Yes, special steel can be recycled.
- Q: Can special steel be used in the production of bearings?
- Yes, special steel can be used in the production of bearings. Special steel alloys such as stainless steel or high-carbon chromium steel are often used to manufacture bearings due to their superior strength, durability, and corrosion resistance properties. These specialized steels ensure that bearings can withstand heavy loads, high temperatures, and harsh operating conditions, making them suitable for various industries, including automotive, aerospace, and manufacturing.
- Q: How is special steel used in the defense supply chain?
- Special steel is used in the defense supply chain for a variety of applications. It is utilized in the manufacturing of military vehicles, aircraft, and naval vessels, providing strength, durability, and resistance to extreme conditions. Special steel is also crucial in the production of weapons and ammunition, ensuring the reliability and effectiveness of these defense systems. Additionally, it plays a vital role in the construction of military infrastructure and equipment, such as bridges, barriers, and armor plating, enhancing their ability to withstand impact, blasts, and other threats.
- Q: How does special steel contribute to reducing product maintenance requirements?
- Special steel contributes to reducing product maintenance requirements by providing enhanced strength, durability, and corrosion resistance. Its unique composition and properties make it more resistant to wear, impact, and environmental factors, thereby minimizing the need for frequent repairs or replacements. Additionally, special steel's high temperature resistance and low maintenance characteristics ensure prolonged product lifespan and decreased maintenance costs.
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Special Steel AISI 4140 Round Bar Steel
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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