Grade 4340 (ASTM A29) Alloy Special Steel Round Bar
- Ref Price:
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- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 m.t
- Supply Capability:
- 10000 m.t/month
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Specification
Specifications of Round Bar
1. Alloy steel round bar
2. Dia:16mm~250mm
3. Length: 6m, 9m, 12m or as customer’s request
4. Tolerance: Within ±5% for weight; ±2mm for diameter
5. Note: The price can be better is the quantity is good
Equivement Grade
DIN:34CRNIMO
SAE:4340
JIS:SNCM439(SNCM8)
BS:817M40
UNI:40NiCrMo7
Chemical Composition
C | Si | Mn | S | P | Cr | Ni | Cu | Mo |
0.37-0.44 | 0.17-0.37 | 0.50-0.80 | ≤0.025 | ≤0.025 | 0.60-0.90 | 1.25-1.65 | ≤0.025 | 0.15-0.25 |
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Usage and Applications of Round Bar
1. Chinese standard steel bar is often used where large amounts of steel need to be formed, for example as structural steel.
2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.
3. Steel round bar is used in construction and a large number of architectural and engineering structures.
Packaging & Delivery of Round Bar
Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)
Delivery Detail: 15~45 days
Trade terms: FOB, CFR, CIF
MOQ: 30 metric tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.
Weight: Theprice invoicing on theoretical weight basis or actual weight basis depends on customer’s request.
Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.
Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.
Production Flow of Round Bar
1. The common processes are preheated forging quenching, dual refinement solution process, cooling quenching and isothermal quenching. We use heat treatment for dual refinement solution process.
2. Material prepare (billet) — heat up — rough rolling — precision rolling — cooling — packing — storage and transportation
FAQ:
Q1: Why buy Materials & Equipment from OKorder.com?
A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.
Q2: How do we guarantee the quality of our products?
A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.
Q3: How soon can we receive the product after purchase?
A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.
Q4: What makes stainless steel stainless?
A4: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.
Q5: Can stainless steel rust?
A5: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.
- Q: How does special steel contribute to reducing material waste?
- Special steel contributes to reducing material waste through its superior properties and durability. Unlike traditional steel, special steel is designed to have enhanced strength, corrosion resistance, and wear resistance. These properties allow for the production of thinner and lighter components without compromising their functionality, leading to reduced material consumption. Additionally, the longevity and resistance to wear of special steel products result in longer service life, minimizing the need for frequent replacements and further reducing material waste.
- Q: What are the properties of high-temperature tool steel?
- High-temperature tool steel possesses a combination of properties that make it suitable for use in high-temperature applications. It has excellent hardness, toughness, and wear resistance, enabling it to withstand extreme temperatures without losing its shape or strength. Additionally, it exhibits good thermal conductivity and dimensional stability, ensuring that it maintains its form and performance even under high heat and thermal cycling.
- Q: What are the main advantages of using special steel in the aerospace industry?
- The main advantages of using special steel in the aerospace industry are its high strength-to-weight ratio, excellent corrosion resistance, and superior heat resistance. Special steel allows aircraft to be lighter, yet still maintain the necessary structural integrity and safety standards. Its resistance to corrosion ensures the longevity of the aircraft, even in harsh environments. Additionally, special steel's ability to withstand high temperatures makes it suitable for use in jet engines and other crucial components, ensuring optimum performance and safety in aerospace applications.
- Q: How does special steel perform in high-vibration environments?
- Special steel performs well in high-vibration environments due to its exceptional strength, durability, and ability to dampen vibrations. Its unique composition and heat treatment make it highly resistant to fatigue, reducing the risk of fractures or failures caused by constant vibrations. Additionally, special steel's excellent hardness and toughness properties allow it to maintain its structural integrity and performance even under severe vibration conditions.
- Q: Is special steel suitable for manufacturing precision components?
- Yes, special steel is indeed suitable for manufacturing precision components. Special steel possesses unique properties such as high strength, wear resistance, and excellent dimensional stability, making it ideal for producing components with precise and intricate designs. Additionally, its superior machinability and ability to withstand extreme conditions further enhance its suitability for manufacturing precision components.
- Q: What are the properties of martensitic steel?
- Martensitic steel is a type of stainless steel known for its high strength, hardness, and resistance to corrosion. It is characterized by a unique microstructure, formed through rapid cooling or quenching from high temperatures, which results in a hard, brittle material. Martensitic steel typically exhibits excellent wear resistance, making it suitable for applications such as cutlery, knives, and industrial tools. However, it may have reduced toughness and lower ductility compared to other stainless steel types.
- Q: Can special steel be used for making food processing equipment?
- Yes, special steel can be used for making food processing equipment. Special steel, also known as stainless steel, is commonly used in the food processing industry due to its unique properties. Stainless steel is non-reactive, meaning it does not interact with food or alter its taste, odor, or color. It is also resistant to corrosion, which is essential in preventing contamination and ensuring food safety. Additionally, special steel is durable, easy to clean, and has a smooth surface that prevents the growth of bacteria. These qualities make it an ideal material for making food processing equipment such as mixing tanks, conveyors, cutting tools, and storage containers.
- Q: How does special steel contribute to the aerospace structural industry?
- The aerospace structural industry relies heavily on special steel due to its various important attributes needed for building aircraft components. Firstly, special steel possesses exceptional strength and durability, enabling it to withstand the extreme conditions and stresses experienced during flight. This is particularly crucial for critical components like landing gear, engine parts, and wing structures that face high temperatures, pressure, and vibrations. Additionally, special steel exhibits excellent corrosion resistance, which is essential for ensuring the long-lasting and reliable nature of aerospace structures. Aircraft are constantly exposed to harsh environments such as high humidity, saltwater, and chemicals, which can cause corrosion and degradation if not adequately protected. Special steel helps prevent these issues, ensuring the aircraft's structural integrity throughout its lifespan. Moreover, special steel offers other desirable properties including heat resistance, fatigue resistance, and weldability. These characteristics make it suitable for a wide range of aerospace applications such as constructing fuselage frames, engine mounts, fasteners, and hydraulic systems. By utilizing special steel in these components, aerospace manufacturers can achieve lightweight designs without compromising strength and safety. Furthermore, special steel empowers engineers to push the boundaries of aircraft performance by facilitating the development of advanced technologies. For example, the use of special steel alloys in turbine blades allows for higher operating temperatures, improving engine efficiency and reducing fuel consumption. This contributes to the overall sustainability and environmental friendliness of the aerospace industry. In conclusion, special steel is an indispensable material in the aerospace structural industry as it provides the necessary strength, durability, corrosion resistance, and other essential properties required for constructing aircraft components. Its contribution enables the development of safer, more efficient, and technologically advanced aircraft, ultimately benefiting the aerospace industry as a whole.
- Q: How does special steel perform in magnetic fields?
- Special steel is typically non-magnetic, meaning it has a very low magnetic permeability. This property allows it to perform well in magnetic fields, as it does not interfere with or distort the field.
- Q: What are the limitations of using special steel in high-temperature applications?
- The limitations of using special steel in high-temperature applications include its susceptibility to oxidation and corrosion, reduced mechanical strength at elevated temperatures, and potential for thermal expansion and distortion. Additionally, special steel may be expensive and difficult to obtain, limiting its practicality in certain applications.
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Grade 4340 (ASTM A29) Alloy Special Steel Round Bar
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 m.t
- Supply Capability:
- 10000 m.t/month
OKorder Service Pledge
OKorder Financial Service
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