Grade AISI 4140 _42CrMo4 Steel Round Bar
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
Grade AISI 4140 _42CrMo4 Steel Round Bar
Details of Grade AISI 4140 _42CrMo4 Steel Round Bar
Name | 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 / |
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 |
Specification of Grade AISI 4140 _42CrMo4 Steel Round Bar
1.Size of 4140 Steel Round Bar | ||||||||
Round bar | Diameter(mm) | Length (mm) | ||||||
20~800 | 3000~9000 | |||||||
Plate | Thickness(mm) | Width (mm) | Length (mm) | |||||
Max:800 | Max:2200 | Max:9000 | ||||||
The specification can be customized. | ||||||||
2.Chemical Compositons | ||||||||
Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
42CrMo | 0.38~0.45 | 0.17~0.37 | 0.50~0.8 | ≤0.035 | ≤0.035 | 0.9~1.2 | 0.15-0.25 | ≤0.3 |
4140 | 0.40~0.45 | 0.15~0.35 | 0.75~1.0 | ≤0.035 | ≤0.040 | 0.8~1.1 | 0.15-0.25 | - |
SCM44 | 0.38~0.43 | 0.15~0.35 | 0.60~0.9 | ≤0.030 | ≤0.030 | 0.9~1.2 | 0.15-0.30 | ≤0.25 |
1.7225 | 0.38~0.45 | ≤0.40 | 0.60~0.9 | ≤0.025 | ≤0.035 | 0.9~1.2 | 0.15-0.30 |
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3.Features of 4140 alloy steel | ||||||||
1. Chromium molybdenum alloy steel | ||||||||
2. Slightly higher carbon content then 4130 | ||||||||
3. Greater strength and heat treatment | ||||||||
4.Typical Applications | ||||||||
1. Applications in the oil and gas sector | ||||||||
2. Connection rods, collets, conveyor pins, | ||||||||
3. Gears, stem assemblies, | ||||||||
4. Pump shafts and tool holders | ||||||||
CNBM Introduction of Grade AISI 4140 _42CrMo4 Steel Round Bar Supplier
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.
After-sale service |
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Advantages
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Packaging & Delivery Grade AISI 4140 _42CrMo4 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
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
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Where are your Market? | Covering more than 160 countries in the world |
- Q: What are the main factors affecting the strength of special steel?
- The main factors affecting the strength of special steel are the composition of alloying elements, heat treatment processes, and the grain size of the steel.
- Q: What are the different methods for improving the fatigue strength of special steel?
- There are several methods for improving the fatigue strength of special steel. 1. Heat treatment: One of the most common methods is through heat treatment processes such as annealing, quenching, and tempering. These processes help to refine the microstructure of the steel, reducing the presence of impurities, and improving its fatigue resistance. 2. Surface treatment: Surface treatments like shot peening and nitriding can enhance the fatigue strength of special steel. Shot peening involves bombarding the surface of the steel with tiny metal particles, inducing compression stress in the material, which helps to prevent crack initiation and propagation. Nitriding involves diffusing nitrogen into the surface layer of the steel, forming a hard and wear-resistant nitride layer that enhances the fatigue resistance. 3. Alloying: Alloying special steel with certain elements can significantly improve its fatigue strength. For example, adding chromium, molybdenum, or vanadium can enhance the steel's hardenability and resistance to fatigue. These alloying elements form carbides or nitrides, which act as barriers to crack propagation. 4. Surface coatings: Applying protective coatings like electroplating, hot-dip galvanizing, or physical vapor deposition (PVD) can help improve the fatigue strength. These coatings provide a barrier against environmental factors that may lead to corrosion or surface damage, ultimately enhancing the fatigue life of the steel. 5. Grain refinement: By refining the grain size of the steel through processes like severe plastic deformation or equal channel angular pressing (ECAP), the fatigue strength can be improved. Fine-grained steels have a higher resistance to crack initiation and propagation, resulting in enhanced fatigue properties. 6. Residual stress management: Controlling and managing residual stresses in the steel can improve its fatigue strength. Techniques like stress relieving or shot peening can help to reduce tensile residual stresses, which are detrimental to fatigue resistance. It is important to note that the selection of the most appropriate method for improving fatigue strength depends on the specific requirements, the type of special steel, and the intended application of the material.
- Q: How is bearing steel used in the manufacturing of bearings?
- Bearing steel is a specialized type of steel that is used in the manufacturing of bearings to ensure high performance and durability. It is specifically designed to have excellent hardness, wear resistance, and fatigue strength. Bearing steel is used to produce the inner and outer rings, as well as the rolling elements and cages of bearings. By using bearing steel, manufacturers can produce bearings that can withstand heavy loads, high speeds, and continuous rotation, ensuring smooth operation and longer lifespan of the bearings.
- Q: How does special steel contribute to the energy equipment industry?
- Special steel plays a crucial role in the energy equipment industry by providing materials with superior strength, durability, and corrosion resistance. These properties enable the production of high-performance components such as turbine blades, pressure vessels, and pipelines, which are essential for power generation, transmission, and distribution. Additionally, special steel's ability to withstand extreme temperatures and harsh operating conditions enhances the efficiency and reliability of energy equipment, ultimately contributing to the overall sustainability and advancement of the industry.
- Q: What are the challenges in forming special steel?
- One challenge in forming special steel is achieving the desired mechanical properties while maintaining the desired shape and dimensions. Special steels often require precise and complex processing techniques, including heat treatment, forging, and machining, which can be challenging to execute accurately. Additionally, special steels may have specific chemical compositions that make them more susceptible to cracking, warping, or distortion during the forming process, further adding to the challenges involved. Controlling these factors and ensuring the final product meets the required specifications requires a high level of expertise and careful attention to detail.
- Q: How does special steel comply with international standards?
- Special steel, specifically designed and manufactured to possess exceptional properties and performance, undergoes a rigorous process to ensure its quality and conformity to established norms. To begin with, adherence to international standards in the production of special steel is achieved through the meticulous selection of raw materials. The composition and quality of these materials are carefully controlled and tested to meet the specifications outlined by international standards organizations. This guarantees that the resulting special steel is of the desired quality and possesses the necessary mechanical properties. In addition, standardized production processes are followed by special steel manufacturers. These processes are designed in accordance with international guidelines and standards to ensure consistency and traceability. Through the use of advanced technologies and quality control measures, manufacturers can monitor and control every stage of production, from melting and casting to rolling and heat treatment. This guarantees that the final product meets the required standards in terms of chemical composition, mechanical properties, and dimensional tolerances. Moreover, stringent testing and inspection procedures are conducted to validate the compliance of special steel with international standards. Certified laboratories and independent third-party agencies perform various destructive and non-destructive testing methods, such as ultrasonic testing, hardness testing, and microstructure analysis. These tests ensure unbiased and accurate results. Furthermore, special steel manufacturers often have their production processes and quality management systems audited and certified by recognized bodies, like ISO, to demonstrate their commitment to compliance with international standards. It is also important to note that special steel manufacturers actively participate in international standardization committees, such as ASTM International and ISO. By engaging in these committees, they contribute to the development and revision of international standards, ensuring that their products remain up to date and aligned with the latest industry requirements. In conclusion, special steel complies with international standards through careful raw material selection, adherence to standardized production processes, rigorous testing and inspection, and active participation in international standardization committees. By following these measures, special steel manufacturers demonstrate their dedication to producing high-quality products that meet the strict requirements of international standards.
- Q: How does special steel contribute to the dimensional stability of products?
- Special steel contributes to the dimensional stability of products through its unique properties and characteristics. One of the key factors is its high level of hardness, which allows it to resist deformation or changes in shape and size under varying temperature and load conditions. This hardness ensures that the product maintains its intended dimensions and shape, even when subjected to external forces or thermal fluctuations. Moreover, special steel often possesses excellent thermal conductivity, enabling it to efficiently distribute and dissipate heat. This property helps prevent localized heating or cooling, which can cause dimensional changes in materials. By maintaining consistent temperatures across the product, special steel minimizes the risk of warping, expansion, or contraction, thereby ensuring dimensional stability. Another aspect that contributes to dimensional stability is the low coefficient of thermal expansion of special steel. This coefficient measures the amount of expansion or contraction a material undergoes in response to temperature changes. Special steel's low coefficient means it experiences minimal dimensional changes when exposed to temperature variations. This characteristic is particularly crucial in applications where precise tolerances and tight dimensional control are required, such as in aerospace or automotive industries. Furthermore, special steel often possesses enhanced corrosion resistance, which helps prevent rusting or degradation of the material over time. Corrosion can lead to changes in the shape and dimensions of products, compromising their dimensional stability. By using special steel, manufacturers can ensure that their products maintain their original dimensions and structural integrity, even in harsh or corrosive environments. Overall, the unique properties of special steel, such as high hardness, excellent thermal conductivity, low coefficient of thermal expansion, and corrosion resistance, all contribute to the dimensional stability of products. By incorporating special steel into the manufacturing process, companies can produce high-quality products that maintain their precise dimensions and shape, ensuring reliability and longevity for end-users.
- Q: How is the quality of special steel ensured?
- The quality of special steel is ensured through a combination of rigorous testing, strict quality control measures, and adherence to international standards and specifications. Special steel producers employ various methods such as chemical analysis, mechanical testing, and non-destructive testing to verify the composition, strength, and integrity of the steel. Additionally, special steel manufacturers often have dedicated quality assurance teams that closely monitor the production process to identify any potential issues and ensure the final product meets the required specifications.
- Q: How does special steel contribute to the nuclear industry?
- Special steel plays a crucial role in the nuclear industry by offering unique properties such as high strength, heat resistance, and corrosion resistance. It is used in critical applications like reactor pressure vessels, steam generators, fuel cladding, and containment structures. The exceptional performance of special steel ensures the safety, reliability, and longevity of nuclear power plants, making it an indispensable material for the industry.
- Q: How does special steel perform in high-stress applications?
- Special steel performs exceptionally well in high-stress applications. Its unique composition and properties, such as high strength, toughness, and resistance to wear and corrosion, enable it to withstand extreme conditions and heavy loads without compromising its structural integrity. This makes special steel an ideal choice for demanding industries like aerospace, automotive, and construction, where durability and reliability are crucial.
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Grade AISI 4140 _42CrMo4 Steel Round Bar
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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