Forged Pre-harden AISI 4340 Steel Round Bars Supplier
- Ref Price:
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 500000 m.t./month
- OKorder Service Pledge
- Quality Product
- Order Online Tracking
- Timely Delivery
- OKorder Financial Service
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- Credit Services
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Item specifice
Forged Pre-harden AISI 4340 Steel Round Bars Supplier
Product Description of Forged Pre-harden AISI 4340 Steel Round Bars Supplier
1. Steel grade: ASTM4140, SCM440, 42CrMo, DIN1.7225
2. Length: 6M-12M
3. Diameter: 16mm-300mm
4. Product range: round bar, flat bar, square bar
5. Technique: Hot rolled, forged, cold drawn
Specification of Forged Pre-harden AISI 4340 Steel Round Bars Supplier
Material | SCM4140 | Round bar | Dia(mm) | 16-300mm |
Process | EAF + LF + VD + Forged + Heat Treatment (optional) | Length (mm) | Max 12m | |
Heat treatment | Normalized / Annealed / Quenched / tempered | Flat bar | Thickness(mm) | 8-500mm |
Delivery condition | Hot forged +Rough machined (black surface after Q/T)+ Turned (optional) | Width(mm) | 70-200mm | |
Test | Ultrasonic test according to SEP 1921-84 D/d | Length (mm) | Max 12m |
Chemical Composition of Forged Pre-harden AISI 4340 Steel Round Bars Supplier
C | Si | Mn | Cr | Mo | P | S |
0.38~0.43 | 0.15~0.35 | 0.75~1.00 | 0.8~1.1 | 0.15~0.25 | ≤0.035 | <0.04< td=""> |
Photo Show of Forged Pre-harden AISI 4340 Steel Round Bars Supplier
Packing and Delivery:
Packing in bundle package, or as customer's requirements.
Delivery Detail: 45 days after receiving the deposit.
Usage and Applications of Forged Pre-harden AISI 4340 Steel Round Bars Supplier
1. Steel round bar is used in a large number of architectural and engineering structures. Or it can be used in construction of plants for the production of steel house frames, high-voltage transmission towers, bridges, vehicles, boilers, containers, ships, etc.
2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.
3. Some special material steel round bar can be used for main shaft of steamer, hummer shank, with big section and supper force.
Company Information
CNBM International Corporation is the most important trading platform of CNBM group.
Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.
F A Q
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, Factory or Trading Company?
CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.
4, Payment Terms?
30% TT as deposit and 70% before delivery.
Irrevocable L/C at sight.
5, Trading Terms?
EXW, FOB, CIF, FFR, CNF
6, After-sale Service?
CNBM 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:
- Steel round bars can be protected from corrosion through various methods such as applying protective coatings like paint or epoxy, using galvanization or zinc coating, using corrosion inhibitors, or by implementing cathodic protection techniques such as sacrificial anodes or impressed current systems.
- Q:Is round steel round steel?
- Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of which: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. Round bars larger than 25 millimeters are used mainly for making mechanical parts or for seamless steel tubes.
- Q:
- There are several different types of threads commonly used for steel round bars, including standard threads, metric threads, fine threads, coarse threads, and special threads. The choice of thread type depends on the specific application and requirements of the steel round bar.
- Q:
- The cost of steel round bars can vary depending on several factors such as the grade of steel, size of the bar, and the quantity being purchased. Generally, the price is determined by market conditions and can fluctuate over time. It is recommended to contact local steel suppliers or check online platforms that offer steel products to get the most accurate and up-to-date pricing information. Additionally, factors such as transportation and handling costs may also influence the final cost.
- Q:
- There are various types of steel round bars used in the defense industry, including but not limited to carbon steel, alloy steel, stainless steel, and tool steel. Each type has specific properties that make them suitable for different applications within the defense sector.
- Q:
- Yes, steel round bars can be used for making crankshafts. Steel is a commonly used material for crankshafts due to its high strength, durability, and ability to withstand the stresses and strains of engine operation. The round bars can be machined and shaped to the required specifications to create a reliable and functional crankshaft.
- Q:
- Steel round bars have the capability to undergo machining. Machining is a procedure that entails eliminating material from a workpiece in order to achieve the desired form, size, or texture. Steel round bars are frequently machined for the purpose of creating various components, including shafts, bolts, and fasteners. Turning, milling, drilling, and grinding are some of the machining processes that can be employed to shape and cut the steel round bars. However, the machinability of steel can differ depending on factors such as the steel's composition, hardness, cutting tools, and machining parameters. It is crucial to employ appropriate machining techniques and tools in order to ensure accurate and efficient outcomes when machining steel round bars.
- Q:
- To minimize the chance of accidents or injuries, it is important to adhere to several safety precautions when dealing with steel round bars. 1. Personal Protective Equipment (PPE) should always be worn. Safety goggles, gloves, steel-toed boots, and a hard hat are essential in safeguarding against potential hazards like flying debris, sharp edges, and heavy objects. 2. Proper lifting and carrying techniques are crucial. Due to the weight and bulkiness of steel round bars, it is vital to employ correct lifting methods to prevent strain or injury. Lift with your legs, maintain a straight back, and avoid twisting or jerking movements. If the bars are too heavy, seek assistance or employ mechanical aids like forklifts or cranes. 3. Ensure secure storage and stacking. Properly securing and organizing steel round bars when storing or stacking them is imperative. Use appropriate storage racks or A-frames to prevent tipping or falling, which could result in severe injuries. When stacking multiple bars, employ spacers or shims to maintain stability. 4. Be cautious of sharp edges. Steel round bars might possess sharp edges or burrs, necessitating care when handling. Wearing gloves is advised to protect your hands, and avoid dragging or sliding the bars to prevent cuts or abrasions. 5. Employ proper handling techniques. Maintain a firm grip when moving steel round bars and be aware of your surroundings. Do not swing or throw the bars, as they may strike someone or cause damage. Instead, walk slowly and steadily, ensuring clear pathways and ample space for maneuvering. 6. Inspect for defects. Prior to using steel round bars, examine them for any defects or damage that could compromise their structural integrity. Look for cracks, dents, or deformities. If any issues are detected, refrain from using the bars and report them to a supervisor or quality control personnel. 7. Observe fire safety measures. Steel round bars are highly flammable when exposed to extreme heat or sparks. Hence, avoid working near open flames or hot work areas. Keep fire extinguishers nearby and ensure that everyone is trained in fire safety protocols. By adhering to these safety precautions, the risks associated with handling steel round bars can be significantly minimized, creating a safer work environment.
- Q:
- The manufacturing process and resulting quality of the finished product distinguish a centerless ground steel round bar from a precision ground one. The centerless ground steel round bar is produced through a machining technique known as centerless grinding. This involves placing the steel bar between two grinding wheels, one rotating rapidly and the other remaining stationary. The rotating wheel removes material from the bar's surface, resulting in a smooth and uniformly-sized round shape. Centerless grinding is renowned for its ability to achieve bars with precise tolerances and excellent surface finish. Contrarily, the precision ground steel round bar is manufactured using a distinct process called precision grinding. In precision grinding, the steel bar is firmly held in a chuck or fixture and rotated against a grinding wheel. The grinding wheel eliminates material from the bar's surface, yielding an accurate round shape with tight tolerances. Precision grinding is commonly employed when a higher level of accuracy is necessary, particularly in applications where the bar will function as a critical component in machinery or tools. In conclusion, both centerless ground and precision ground steel round bars offer exceptional dimensional accuracy and surface finish. However, centerless grinding proves to be a more efficient and cost-effective method for producing large quantities of round bars with consistent quality, while precision grinding is preferred for applications that demand the utmost level of dimensional accuracy and surface finish.
- Q:
- Yes, steel round bars can be used in the manufacturing of kitchenware. Steel is a durable and versatile material that can be easily molded into various shapes and sizes. It is commonly used in the production of kitchen utensils, cookware, and cutlery due to its strength, corrosion resistance, and heat conductivity.
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