Hot Rolled Alloy Structural Steel Round Bar SCM440

Hot Rolled Alloy Structural Steel Round Bar SCM440 System 1

Hot Rolled Alloy Structural Steel Round Bar SCM440 System 2

Hot Rolled Alloy Structural Steel Round Bar SCM440 System 3

Hot Rolled Alloy Structural Steel Round Bar SCM440 System 4

Hot Rolled Alloy Structural Steel Round Bar SCM440

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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Standard	Grade	C	Cr	Mo	Si	Mn	P	S	Ni	Cu

GB	42CrMo	0.38-0.45	0.90-1.20	0.15-0.25	0.17-0.37	0.50-0.80	0.035	0.035	0.3	0.3
JIS	SCM440	0.38-0.43	0.90-1.20	0.15-0.30	0.15-0.35	0.60-0.90	0.03	0.03	0.25	0.3
ASTM	4140	0.38-0.43	0.80-1.10	0.15-0.25	0.15-0.35	0.75-1.00	0.035	0.04	—	—
ENISO	42CrMo4	0.38-0.45	0.90-1.20	0.15-0.30	≤0.40	0.60-0.90	0.035	0.035	—

Grade	aisi4140 astm4140 sae4140 42CrMo,1.7225,scm440,42CrMo4
Processing	EAF+LF+VD
Commodity	steel round bar/round steel bar/round bar steel
Technique	hot rolled
Diameter	10-310mm
Length	canbe required to 3-12m
Sizes tolerance	length: +/-100mm,straightless:3mm/m
Application	1) General service industries (petroleum, food, chemical, paper, fertilizer, Fabric, aviation and nuclear) 2) Fluid, gas and oil transport 3) Pressure and heat transmission 4) Construction and ornament 5) Boiler heat exchangers
Advantages of this material	1) High fatigue strength and impact resistance after tempering 2) Good low-temperature impact toughness 3) No obvious temper brittleness
Quality Condition	1): Straightness: 3mm/m (max) 2): Corner Radius: 3(max) 3): The ends will be end cut or gas cut 4): No cracks on the surface
Packing	1): Paint oil on the surface to protect steel bars from rusting. 2): Bundle packing by Iron Strips. 3): Bundle weight is from 2mt to 3 mt. 4): Two or three tags will be attached on each bundle.
MOQ	5 tons for each sizes

Product Name	Typical Grades	Diameter(mm)	Standard adopted
Carbon Steel	20 (1020/S20C/C22)	Ø16-Ø300	GB/SAE/JIS/DIN
40 (1040/S40C/C40)
45 (1045/S45C/C45)
Bearing Steel	GCr9 (51100/SUJ1)	Ø12-Ø250
GCr15 (52100/SUJ2/100Gr6)
GCr9SiMn (A485-Gr.1/SUJ3)
Cr-Mo Steel	20Cr (5120/SCr420H/20Cr4)	Ø12-Ø250
40Cr (5140/SCr440/41Cr4)
42CrMo(4140/SCM440/42CrMo4)
Gear Steel	20CrNiMo	Ø16-Ø600
20CrMn(5115/SMnC420/20MnCr5)
20CrNiMo(8620/SNCM220/20CrMiMo2)

Carbon Steel	Mold bottom, Plastic mold, Construction machinery parts Automobile parts, Security grills, Screens, Construction
Bearing Steel	Aerospace, Navigation, Nuclear energy, Chemical industry Electronic information, Petrochemical, Instrument and meter Transportation
Cr-Mo Steel	Mechanism & Fasteners gear, Stressed components for vehicles Engines and machines, Parts of larger cross-section
Gear Steel	All kinds of gears, Statically and dynamically stressed component for vehicles Engines and machine, Larger cross-section parts, Crankshafts

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.

FAQ

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.

Packaging & Delivery

1, Packaging: seaworthy package or as required

2, Delivery: 35-45 days or based on quantity

Q: How do you calculate the deflection of a steel round bar?: To calculate the deflection of a steel round bar, you can use the Euler-Bernoulli beam theory formula, which states that the deflection is proportional to the applied load, the length of the bar, and the fourth power of its diameter. By inputting these values into the formula, you can determine the deflection of the steel round bar.

Q: Grade 1 steel is round steel, grade two steel is ribbed thread steel. Are the weight of the two units the same?: Grade two steel is ribbed steel, but the average diameter is calculated. The chemical composition of grade steel and grade two steel is different, but the density of them is the same. Therefore, the unit weight of grade 1 steel and grade two steel is the same.

Q: What are the advantages of using chromium-vanadium alloy steel round bars?: There are several advantages of using chromium-vanadium alloy steel round bars: 1. High Strength: Chromium-vanadium alloy steel is known for its exceptional strength and hardness. It has a high tensile strength, making it suitable for applications that require heavy-duty performance and resistance to wear and tear. 2. Durability: The addition of chromium and vanadium elements enhances the durability of the alloy steel round bars. It provides excellent resistance to corrosion, oxidation, and high temperatures, making it ideal for use in harsh environments. 3. Versatility: Chromium-vanadium alloy steel round bars offer versatility in various applications. They can be used for manufacturing tools, springs, gears, and other components that require high strength and durability. The versatility of this alloy steel makes it a preferred choice in industries such as automotive, aerospace, and construction. 4. Machinability: Chromium-vanadium alloy steel is relatively easy to machine and work with, making it convenient for manufacturers. It can be easily shaped, cut, and formed into desired shapes and sizes without compromising its mechanical properties. 5. Cost-Effective: Despite its excellent properties, chromium-vanadium alloy steel round bars tend to be more cost-effective compared to other high-performance alloys. This makes it a popular choice for industries that require strong and durable materials without exceeding their budget. 6. Fatigue Resistance: Chromium-vanadium alloy steel exhibits exceptional fatigue resistance, making it suitable for applications that involve repetitive stress or cyclic loading. It can withstand repeated use and maintain its structural integrity over an extended period. Overall, chromium-vanadium alloy steel round bars offer a combination of high strength, durability, versatility, and cost-effectiveness. These advantages make it a preferred material choice for various industrial applications where reliability and performance are crucial.

Q: Can steel round bars be used for making fasteners or bolts?: Yes, steel round bars can be used for making fasteners or bolts. Steel is a commonly used material for fasteners and bolts due to its high strength, durability, and resistance to corrosion. Round bars made of steel can be easily machined and threaded to create various types of fasteners and bolts, including screws, nuts, and threaded rods. The specific grade of steel used would depend on the application and required strength properties. However, it is important to note that the manufacturing process and quality control are crucial in ensuring the reliability and performance of the final product.

Q: How do steel round bars compare to rubber round bars?: Steel round bars and rubber round bars are distinct materials with contrasting properties and applications. Steel round bars, which are crafted from hardened carbon steel, are renowned for their robustness and resilience. With their high tensile strength, they can endure substantial loads and stress without distorting or fracturing. Construction, engineering, and manufacturing industries frequently employ steel round bars for structural support, reinforcement, and diverse mechanical purposes. Additionally, their exceptional resistance to heat and corrosion makes them suitable for extreme conditions. In contrast, rubber round bars, composed of synthetic or natural rubber compounds, possess exceptional advantages such as flexibility, elasticity, and vibration absorption properties. These attributes make them ideal for applications necessitating shock absorption, noise reduction, or effective sealing. Automotive industries, machinery mounts, conveyor systems, and various other industrial fields extensively employ rubber round bars to leverage their distinctive properties. While steel round bars excel in strength and rigidity, rubber round bars offer impressive flexibility and vibration dampening capabilities. The choice between steel and rubber round bars primarily hinges on the specific requisites of the application. When high strength and durability are necessary, steel round bars emerge as the optimal selection. Conversely, if flexibility, elasticity, or vibration absorption are prerequisites, rubber round bars prove more suitable. To summarize, steel round bars and rubber round bars exhibit contrasting properties and applications. Steel round bars grant strength and durability, whereas rubber round bars provide flexibility and vibration absorption properties. Opting for one over the other relies on the specific requirements of the application.

Q: Can steel round bars be used in food processing industries?: Yes, steel round bars can be used in food processing industries. Steel is a popular material choice for various applications in the food industry due to its durability, strength, and corrosion resistance. Steel round bars can be used in food processing equipment such as mixers, conveyors, grinders, and slicers. They can also be used in the fabrication of food storage containers, shelves, and racks. However, it is important to ensure that the steel used in food processing industries is of food-grade quality to meet the necessary hygiene and safety standards.

Q: What is the maximum vanadium content allowed for steel round bars?: The maximum vanadium content allowed for steel round bars varies depending on the specific steel grade and industry standards. Vanadium is commonly used as an alloying element in steel to improve its strength, hardness, and resistance to corrosion. In general, the maximum vanadium content in steel round bars ranges from 0.02% to 0.25%. However, it is important to note that different steel grades and applications may have specific limits set by industry regulations or customer requirements. Therefore, it is crucial to consult the relevant standards and specifications for the specific steel grade and application to determine the maximum allowed vanadium content for steel round bars.

Q: Can steel round bars be painted or coated?: Steel round bars can indeed be painted or coated, which is a widely adopted practice aimed at enhancing their appearance, safeguarding them against corrosion, and offering added functionality. Typically, this process involves thoroughly cleaning the bars' surface to eliminate any dirt, grease, or rust, and subsequently applying a primer or base coat, followed by a topcoat or finish. The choice of paint or coating relies on the particular requirements of the application, such as desired color, level of protection, or resistance to environmental conditions. Moreover, specific coatings can confer distinct properties, such as anti-slip, heat resistance, or chemical resistance. In general, painting or coating steel round bars proves to be an effective means of augmenting their aesthetics and durability.

Q: What are the different types of steel round bar alloys used in the marine industry?: Some of the different types of steel round bar alloys used in the marine industry include stainless steel, carbon steel, alloy steel, and duplex steel. These alloys are chosen for their corrosion resistance, strength, and durability in harsh marine environments.

Q: Can steel round bars be used in the medical industry?: Steel round bars are indeed applicable in the medical sector. Specifically, stainless steel round bars are frequently utilized in medical applications due to their ability to resist corrosion, their strength, and their durability. These bars serve multiple purposes in the production of diverse medical devices and equipment, such as surgical instruments, orthopedic implants, dental tools, and prosthetics. The superior quality of stainless steel guarantees that these products can endure the challenging conditions found in medical environments while ensuring optimal performance and safety for patients. Furthermore, stainless steel round bars can be conveniently sterilized, making them suitable for usage in sterile medical settings.

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