JIS Hot Rolled Structural Steel Bar SCM440
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 50000 m.t./month
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Item specifice
Standard:
AISI,JIS,GB,BS,DIN,API,EN,ASTM
Technique:
Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Saw,Extruded,EFW,Spring
Shape:
U Channel,Square,C Channel,Hexagonal,Round,Rectangular,Oval,LTZ
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
Thickness:
16-300mm
Length:
6-12mm
Net Weight:
2mt
JIS Hot Rolled Structural Steel Bar SCM440
Product Description of JIS Hot Rolled Structural Steel Bar SCM440
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 JIS Hot Rolled Structural Steel Bar SCM440
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 JIS Hot Rolled Structural Steel Bar SCM440
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 JIS Hot Rolled Structural Steel Bar SCM440
Packing and Delivery:
Packing in bundle package, or as customer's requirements.
Delivery Detail: 45 days after receiving the deposit.
Usage and Applications of JIS Hot Rolled Structural Steel Bar SCM440
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:What are the different types of tests performed on steel round bars for quality control?
- Steel round bars undergo various tests for quality control purposes to ensure they meet the necessary standards and specifications. These tests include: 1. Tensile Test: This test assesses the tensile strength, yield strength, and elongation properties of the steel bars. It involves applying a pulling force until the bar breaks, measuring the maximum force it can endure, and determining its ability to stretch without fracturing. 2. Hardness Test: The hardness test determines the steel bar's resistance to indentation or scratching, providing insight into its strength and durability. Common hardness tests include Rockwell, Brinell, and Vickers tests. 3. Chemical Composition Analysis: This analysis identifies the steel round bars' chemical composition, including the percentage of elements like carbon, manganese, sulfur, phosphorus, and others. It ensures compliance with specified composition requirements. 4. Ultrasonic Testing: Ultrasonic testing utilizes high-frequency sound waves to detect internal defects or discontinuities within the steel bars. This non-destructive test identifies cracks, voids, or other flaws that may compromise their structural integrity. 5. Dimensional Inspection: This inspection verifies whether the steel round bars meet the required dimensional tolerances, including diameter, length, and straightness. Precision measuring instruments such as calipers, micrometers, and gauges are used to ensure accurate dimensions. 6. Surface Quality Examination: This examination checks the surface condition of the steel bars for defects like cracks, pits, scratches, or irregularities. A smooth and defect-free surface is crucial for proper functionality and safety. 7. Microstructure Analysis: This analysis involves examining the internal structure of the steel bars under a microscope to determine grain size, inclusion content, and overall microstructural integrity. It provides insights into their mechanical properties and ability to withstand various loads and stresses. By conducting these tests, manufacturers guarantee that the steel round bars meet the required quality standards and are suitable for their intended applications.
- Q:Are steel round bars suitable for bicycle frame applications?
- Yes, steel round bars are suitable for bicycle frame applications. Steel is a popular material choice for bicycle frames due to its strength, durability, and versatility. Steel round bars provide excellent structural integrity, making them ideal for supporting the weight and stress placed on a bicycle frame during use. Additionally, steel is known for its high fatigue resistance, which means it can withstand repeated loading and unloading without losing its strength. Steel round bars also offer good weldability, allowing for easy construction and repair of bicycle frames. Overall, steel round bars are a reliable and practical choice for bicycle frame applications.
- Q:What is the Young's modulus of a steel round bar?
- The Young's modulus of a steel round bar is a measure of its stiffness or elasticity. It is a material property that determines how much a material deforms under a given load and is defined as the ratio of stress to strain. For steel, the Young's modulus typically ranges from 190 to 210 gigapascals (GPa). This means that for every unit of stress applied to the steel round bar, the strain experienced by the bar is approximately 190 to 210 times greater. The actual Young's modulus of a specific steel round bar may vary depending on various factors such as the specific grade of steel, its composition, and any heat treatment it has undergone. Therefore, it is important to consult the relevant material specifications or conduct specific testing to determine the exact Young's modulus for a particular steel round bar.
- Q:What are the different types of steel round bar alloys for improved toughness and wear resistance?
- Improved toughness and wear resistance are key characteristics in several steel round bar alloys. These alloys are essential in applications where strength and durability are necessary. Some of the commonly utilized alloys are: 1. Alloy Steel: By incorporating elements like chromium, nickel, molybdenum, or vanadium, alloy steel round bars are fabricated to enhance their mechanical properties. These alloys provide increased strength, toughness, and wear resistance. 2. Stainless Steel: With a minimum chromium content of 10.5%, stainless steel round bars are corrosion-resistant alloys. They exhibit excellent toughness, high strength, and superior wear resistance. Industries such as aerospace, automotive, and construction widely rely on stainless steel round bars. 3. Tool Steel: Tool steel round bars are tailor-made for applications that demand high wear resistance and toughness. These alloys are commonly employed in the manufacturing of cutting tools, dies, and molds. By incorporating elements like tungsten, vanadium, or molybdenum, tool steel alloys improve hardness and wear resistance. 4. Carbon Steel: Renowned for their high strength and toughness, carbon steel round bars find extensive use. These alloys contain varying amounts of carbon and are recognized for their excellent wear resistance. Industries including manufacturing, construction, and automotive utilize carbon steel round bars. 5. Bearing Steel: Bearing steel round bars are specifically engineered to withstand high stress and offer excellent wear resistance. These alloys are commonly employed in the production of ball bearings, roller bearings, and other high-performance bearing components. Bearing steel alloys typically include elements like chromium, silicon, and manganese to enhance mechanical properties. To conclude, a range of steel round bar alloys is available, each offering improved toughness and wear resistance. The selection of the most suitable alloy depends on specific application requirements and desired mechanical properties.
- Q:Can steel round bars be used for making decorative items?
- Yes, steel round bars can definitely be used for making decorative items. Steel round bars are versatile and can be shaped, bent, and welded to create various decorative designs. They offer durability and strength, making them suitable for both indoor and outdoor applications. Steel round bars can be used to make decorative furniture, sculptures, railings, gates, light fixtures, and much more. Their sleek and modern appearance adds an industrial and contemporary touch to any space. Additionally, steel round bars can be finished with different coatings or treatments, such as powder coating or patina, to enhance their visual appeal and protect them from corrosion. Therefore, steel round bars are an excellent choice for creating decorative items due to their versatility, strength, and ability to add a stylish and unique touch to any design.
- Q:How do you prevent steel round bars from rusting during transportation?
- There are several effective measures that can be taken to prevent rusting of steel round bars during transportation. Firstly, it is crucial to properly package the steel round bars. This involves securely wrapping and sealing them using moisture-resistant materials like plastic or shrink wrap. This packaging will act as a barrier against moisture and prevent direct contact with air. Secondly, the inclusion of desiccants inside the packaging can help absorb any moisture that may be present. Desiccants such as silica gel packets or moisture-absorbing clay will create a dry environment around the steel bars, reducing the chances of rust formation. Another effective method is to use VCI (Volatile Corrosion Inhibitor) packaging. VCI materials release a protective vapor that forms a thin layer on the steel surface, inhibiting corrosion. VCI films or papers can be utilized to wrap the steel round bars, providing long-lasting rust protection. Proper storage conditions are also crucial during transportation. The steel round bars should be stored in a dry and well-ventilated environment, away from rain, humidity, and extreme temperature fluctuations. If possible, they should be stored in a covered and climate-controlled area to minimize the risk of rust formation. Regular inspection and maintenance of the steel round bars during transportation is essential. This ensures that the packaging remains intact and no moisture has seeped in. If any damage or signs of moisture are detected, immediate action should be taken to rectify the issue and prevent rust from spreading. By implementing these preventive measures, the risk of rust formation on steel round bars during transportation can be significantly reduced, guaranteeing that they arrive at their destination in optimal condition.
- Q:The 8 thread can replace the beam stirrups by steel
- First class steel is HPB235, that is, yield strength is 235mpa, elongation of grade steel is much larger than grade two steel, and the scientific name of grade two steel is HRB335, that is, yield strength is 335mpa, and grade two steel is higher than first grade steel. But also a high level of brittle than steel, as in seismic zone two structure beam is not replaced.
- Q:Can steel round bars be used for making drill bits?
- No, steel round bars cannot be used for making drill bits. Drill bits require specific materials and manufacturing processes to ensure their durability and effectiveness. Drill bits are typically made from high-speed steel (HSS), cobalt steel, or carbide. These materials are chosen for their hardness, heat resistance, and ability to withstand the high forces and temperatures generated during drilling. Steel round bars, on the other hand, are not specifically designed or manufactured to meet the requirements of drill bits. Using steel round bars for making drill bits would result in inferior performance, increased wear, and potential breakage during drilling operations. It is important to use drill bits that are specifically designed and manufactured for the purpose to ensure efficient and safe drilling operations.
- Q:How do you prevent steel round bars from rusting during storage?
- To prevent steel round bars from rusting during storage, it is important to keep them in a dry environment with low humidity. Applying a coating of protective oil or wax can also help create a barrier against moisture and prevent rust formation. Additionally, storing the bars off the ground and away from direct contact with concrete or other materials that may cause corrosion can further prevent rusting. Regular inspections and maintenance are crucial to ensure the bars remain rust-free.
- Q:What is the resistance to fatigue of a steel round bar?
- The resistance to fatigue of a steel round bar refers to its ability to withstand repeated loading and unloading cycles without experiencing failure or damage. This property is typically evaluated through fatigue testing, where the bar is subjected to a controlled number of stress cycles. The resistance to fatigue of a steel round bar depends on various factors such as the material composition, heat treatment, surface finish, and the presence of any defects or discontinuities.
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JIS Hot Rolled Structural Steel Bar SCM440
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 50000 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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