Grade AISI 4340 CNBM Forged Steel Round Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
Grade AISI 4340 CNBM Forged Steel Round Bar
Name | SAE4340 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 / |
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 |
Machine Capability
Tensile strength (N/mm2Mpa): >=980(100)
Elongation: >=12
Yield strength: >=835(85)
Hardness:( HBS 100/3000)<=269
Reduction of area:>=55
Akv(J)>=78 akv(J/cm2):>=98(10)
Chemical Composition (%):
C | Si | Mn | S | P | Cr | Ni | Cu | Mo |
0.37-0.44 | 0.17-0.37 | 0.40-0.80 | 0.025(max) | 0.025(max) | 0.60-0.90 | 1.25-1.65 | 0.025(max) | 0.15-0.25 |
Packaging & Delivery
Packaging Detail | Sea worthy packing /as per customer's packing instruction |
Delivery Detail | 15 ~ 40 days after receiving the deposit |
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Workshop
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 factors affecting the cost of special steel?
- The main factors affecting the cost of special steel include the cost of raw materials, such as iron ore and other alloying elements, as well as energy costs for the production process. Additionally, market demand and supply dynamics, production capacity, labor costs, and transportation expenses also play a significant role in determining the cost of special steel.
- Q: What are the main advantages of using special steel in the marine industry?
- The main advantages of using special steel in the marine industry are its high strength and durability, corrosion resistance, and ability to withstand extreme conditions. Special steel provides the necessary structural integrity to withstand the harsh marine environment, including exposure to saltwater, waves, and impact forces. It also offers excellent resistance to corrosion, which is crucial for maintaining the integrity and longevity of marine structures. Moreover, special steel's ability to withstand extreme temperatures and pressures makes it suitable for various marine applications, such as shipbuilding, offshore structures, and marine equipment.
- Q: Carbon steel and stainless steel and pattern steel and special steel and high carbon steel difference
- Because of the different colors of steel, showing special patterns, steel should be relatively small amount of steel, such as n690 is a special stainless steel, high hardness
- Q: Classification of special steel products
- According to the carbon content of the steel can be divided into low carbon steel (WC = 0.25%), steel (0.25% WC 0.6%) and high carbon steel (wc>0.6%) according to the content of phosphorus and sulfur can be divided into ordinary carbon steel (carbon steel with phosphorus, sulfur, high quality carbon steel (P), low sulfur and high quality (steel) phosphorus, sulfur lower).In general, the higher carbon content in carbon steel, the higher hardness and higher strength, but lower plasticity. This kind of steel is mainly carbon steel to ensure mechanical properties, so the brand reflects its mechanical properties, represented by the Q+ number, "Q" to "yield point bend" word Pinyin prefix, a digital representation of the yield point value, such as Q275 said the yield point is 275MPa. If the grades are marked with letters A, B, C and D, the quality grade of steel is different. The quantity of S and P is reduced, and the quality of steel is improved. If the letter "F" is marked behind the grade, it is "boiling steel". The label "B" is a semi killed steel, and no "F" or "B" is used as a killed steel. For example, Q235-A = F indicates a yield point of 235MPa for grade a rimmed steel, and Q235-c represents a C grade killed steel with a yield point of 235MPa.
- Q: Can special steel be used in the jewelry industry?
- Yes, special steel can be used in the jewelry industry. It is commonly used to create durable and stylish pieces, such as rings, bracelets, and pendants. Special steel, such as stainless steel or titanium, offers qualities like strength, corrosion resistance, and hypoallergenic properties, making it a popular choice for jewelry designers and wearers.
- Q: How does special steel perform in terms of weldability?
- Special steel generally performs well in terms of weldability. It has good ductility and can be easily welded using various welding methods such as arc welding, resistance welding, and laser welding. The composition and properties of special steel are specifically designed to ensure that it can be successfully welded without compromising its strength and integrity. However, the specific weldability of special steel may vary depending on its exact composition and specific grade. It is always recommended to consult the manufacturer's guidelines and follow proper welding procedures to achieve the best results when working with special steel.
- Q: How does special steel contribute to the renewable energy conversion efficiency?
- Special steel plays a crucial role in enhancing the renewable energy conversion efficiency by providing durability, strength, and resistance to extreme conditions. It is used in the construction of wind turbines, solar panels, and hydropower systems, ensuring their reliability and longevity. Moreover, special steel alloys facilitate the development of more efficient and lightweight components, reducing energy losses and optimizing the overall performance of renewable energy systems.
- Q: What are the main characteristics of tool steel forgings?
- The main characteristics of tool steel forgings include high hardness, excellent wear resistance, and good toughness. They also exhibit high strength and heat resistance, making them suitable for applications that require cutting, shaping, or forming materials. Tool steel forgings are known for their ability to hold a sharp edge and withstand heavy loads, making them ideal for manufacturing tools, dies, and molds.
- Q: How does special steel perform in high-temperature mechanical fatigue conditions?
- Special steel, known for its high strength and resistance to heat, performs exceptionally well in high-temperature mechanical fatigue conditions. Its unique composition and properties enable it to withstand prolonged exposure to elevated temperatures without significant loss of mechanical integrity or performance. This makes special steel a reliable and durable material choice for applications that involve repetitive cyclic loading and heat exposure, such as in aerospace, power generation, and automotive industries.
- Q: What are the specific requirements for special steel used in the oil and gas pipeline industry?
- The specific requirements for special steel used in the oil and gas pipeline industry are dictated by the harsh operating conditions and the need for high performance and reliability. Some of the key requirements include: 1. Corrosion resistance: Special steel used in the oil and gas pipeline industry must possess excellent resistance to corrosion, as pipelines are exposed to various corrosive elements such as moisture, gases, and chemicals. This helps to prevent the degradation or failure of the pipeline due to corrosion. 2. High strength: The steel used in pipelines must have high tensile strength to withstand the high pressure and stress that it experiences during transportation of oil and gas. This ensures the pipeline's structural integrity and prevents leaks or bursts. 3. Toughness and impact resistance: The steel must be able to absorb energy and resist fracture when subjected to sudden impact or external forces. This is crucial for maintaining pipeline integrity and preventing accidents or ruptures. 4. Low temperature toughness: As pipelines often operate in cold environments, the steel must exhibit excellent low-temperature toughness to prevent brittle fracture. This ensures that the pipeline remains ductile and resistant to failure even at extremely low temperatures. 5. Weldability: Special steel used in pipelines should be easily weldable to facilitate the construction and repair of pipelines. Good weldability ensures strong and reliable joints that can withstand the stress and pressure during operation. 6. Resistance to hydrogen-induced cracking: Steel used in the oil and gas pipeline industry should have high resistance to hydrogen-induced cracking (HIC) and sulfide stress cracking (SSC). These types of cracks can occur when hydrogen or sulfide ions penetrate the steel, leading to catastrophic failure. Resistance to these types of cracking is crucial for pipeline safety. 7. Compliance with industry standards: Special steel used in the oil and gas pipeline industry must meet specific industry standards and regulations. These standards ensure that the steel meets the required mechanical properties, chemical composition, and manufacturing processes necessary for safe and reliable pipeline operation. Overall, the specific requirements for special steel used in the oil and gas pipeline industry are aimed at ensuring corrosion resistance, high strength, toughness, low-temperature performance, weldability, resistance to cracking, and compliance with industry standards. These requirements are essential for maintaining the integrity and safety of oil and gas pipelines.
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Grade AISI 4340 CNBM Forged Steel Round Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3 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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