Alloy Steel AISI 4340 Materials 1.6582 System 1

Alloy Steel AISI 4340 Materials 1.6582 System 2

Alloy Steel AISI 4340 Materials 1.6582 System 3

Alloy Steel AISI 4340 Materials 1.6582 System 4

Alloy Steel AISI 4340 Materials 1.6582

Ref Price:

Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 10000 m.t./month

Inquire Now

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

GB	ASTM	JIS	ISO
40CrNiMoA	4340	SNCM439	36CrNiMo4

Standard	Grade	C	Cr	Ni	Mo	Si	Mn	P	S	Cu
≤
GB	5CrNiMo	0.37-0.44	0.60-0.90	1.25-1.35	0.15-0.25	0.17-0.37	0.50-0.80	0.025	0.025	0.30
JIS	SNCM439	0.36-0.43	0.60-1.00	1.60-2.00	0.15-0.30	0.15-0.35	0.60-0.90	0.030	0.020	0.30
ASTM	4340	0.38-0.43	0.70-0.90	1.65-2.00	0.20-0.30	0.15-0.35	0.65-0.85	0.025	0.025	—
ISO	38CrNiMo4	0.32-0.40	0.90-1.20	0.90-1.20	0.15-0.30	0.10-0.40	0.50-0.80	0.035	0.035	—

Tensile strength	Yield strength	Elongation rate	Contractibility rate	Impact Energy	Hardness(HBS100/3000)
≥980MPa	≥835MPa	≥12%	≥55%	≥78J	≤269

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: What are the advantages of using nickel-chromium-molybdenum alloy steel round bars?: There are several advantages of using nickel-chromium-molybdenum alloy steel round bars: 1. High strength and durability: Nickel-chromium-molybdenum alloy steel round bars have excellent mechanical properties, including high tensile strength and hardness. This makes them ideal for applications that require a strong and durable material. 2. Corrosion resistance: The addition of nickel and chromium in the alloy steel composition enhances its resistance to corrosion, making it suitable for use in environments where exposure to harsh chemicals or moisture is a concern. This corrosion resistance extends the lifespan of the round bars and reduces the need for frequent replacements. 3. Heat resistance: Nickel-chromium-molybdenum alloy steel round bars can withstand high temperatures without losing their structural integrity. This makes them suitable for applications that involve exposure to extreme heat, such as in the manufacturing of boilers, heat exchangers, and other heat-resistant equipment. 4. Versatility: The nickel-chromium-molybdenum alloy steel round bars can be easily machined and fabricated, allowing for various shapes and sizes to be produced. This versatility makes them suitable for a wide range of applications in industries such as aerospace, automotive, oil and gas, and construction. 5. Fatigue resistance: The alloy composition of nickel-chromium-molybdenum steel enhances its fatigue resistance, making it suitable for applications subjected to cyclic loading or repeated stress. This property ensures that the round bars can withstand prolonged use without experiencing fatigue failure. 6. Weldability: Nickel-chromium-molybdenum alloy steel round bars have good weldability, allowing for easy joining or fabrication processes. This makes them suitable for applications that require welding or other forms of joining, providing flexibility in design and construction. Overall, the advantages of using nickel-chromium-molybdenum alloy steel round bars make them a preferred choice in various industries where strength, durability, corrosion resistance, heat resistance, versatility, fatigue resistance, and weldability are crucial factors for success.

Q: Can steel round bars be used for making musical instruments?: Yes, steel round bars can be used for making musical instruments. They can be used to create various percussion instruments such as steel drums or xylophones. The steel round bars can be tuned to produce specific musical notes and can be shaped and crafted to achieve the desired sound.

Q: What is the maximum length of a steel round bar?: The maximum length of a steel round bar can vary depending on several factors such as the manufacturing capabilities, transportation limitations, and specific requirements of the project. However, in general, steel round bars can often be manufactured and transported in lengths of up to 12 meters (40 feet) or longer.

Q: What are the different types of steel round bar surface defects?: Steel round bars can exhibit various types of surface defects. Among the most common defects are: 1. Scale: This defect arises from the formation of a thin layer of oxide on the steel's surface during manufacturing. It presents as a rough, flaky, or scaly texture and can be easily eliminated through pickling or abrasive cleaning. 2. Pitting: Localized corrosion manifests as small, shallow holes or depressions on the steel's surface. It is usually caused by exposure to corrosive substances or environments and can weaken the material if left unaddressed. 3. Surface cracks: These visible cracks appear on the surface of the steel round bar and can be attributed to factors like improper cooling during manufacturing, excessive stress, or mishandling. Surface cracks can compromise the steel's structural integrity and necessitate careful inspection and repair. 4. Decarburization: This defect occurs when the steel's surface layer loses carbon content, resulting in reduced hardness and strength. High temperatures during heat treatment or inadequate cooling methods often cause decarburization. It can be identified through visual inspection or hardness tests. 5. Lamination: Lamination defects arise when layers or flakes are present within the steel round bar. These layers can weaken the material and compromise its structural integrity. Improper rolling or excessive impurities in the steel are typically responsible for lamination defects. 6. Inclusions: During the manufacturing process, foreign materials or impurities can become trapped within the steel, resulting in inclusions. These can appear as dark spots, streaks, or irregular shapes on the round bar's surface. Inclusions reduce the steel's strength and ductility and can be caused by factors such as poor raw material quality or insufficient refining processes. It is crucial to note that the severity and impact of surface defects on steel round bars can vary. Regular inspection and quality control measures are essential for identifying and rectifying any surface defects, ensuring the reliability and integrity of the steel round bar.

Q: What are the different types of steel round bar surface finishes?: There are several different types of surface finishes that can be applied to steel round bars. Some of the most common finishes include: 1. Bright: This finish involves polishing the steel round bar to a high gloss, resulting in a shiny and reflective surface. It is often used for decorative purposes or in applications where aesthetics are important. 2. Grinded: Grinded finishes involve using a grinding wheel or abrasive belt to remove the outer layer of the steel round bar, resulting in a smooth and even surface. This finish is often used to remove imperfections or to create a uniform surface for further processing. 3. Brushed: Brushed finishes involve using a wire brush or abrasive pad to create a pattern of fine lines on the surface of the steel round bar. This finish is often chosen for its unique aesthetic appeal and is commonly used in architectural applications. 4. Powder-coated: Powder coating involves applying a dry powder to the surface of the steel round bar and then curing it using heat. This finish provides a durable and corrosion-resistant coating that can be applied in various colors and textures. 5. Galvanized: Galvanizing is the process of applying a protective zinc coating to the steel round bar to prevent corrosion. This finish is commonly used in outdoor or marine applications where the steel is exposed to moisture or harsh environmental conditions. 6. Oiled: Oiled finishes involve applying a thin layer of oil to the surface of the steel round bar. This finish provides temporary protection against corrosion and is often used for short-term storage or transportation purposes. 7. Shot-blasted: Shot blasting involves propelling small metallic or non-metallic particles at high speeds onto the surface of the steel round bar. This process creates a textured finish that helps to improve adhesion of subsequent coatings or paints. Each type of surface finish has its own unique benefits and is chosen based on the specific requirements of the application.

Q: Can steel round bars be used in the defense industry?: Yes, steel round bars can be used in the defense industry. They are commonly utilized in various applications such as building military vehicles, manufacturing weapons, and constructing defense structures due to their strength, durability, and versatility.

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: How do steel round bars compare to rubber round bars?: Steel round bars and rubber round bars have different properties and applications. Steel round bars are known for their strength, durability, and resistance to high temperatures and corrosion. They are commonly used in construction, manufacturing, and engineering projects that require structural support or reinforcement. On the other hand, rubber round bars are known for their flexibility, shock absorption, and noise reduction properties. They are often used in applications such as automotive parts, conveyor belts, and vibration isolation systems. Overall, the choice between steel and rubber round bars depends on the specific requirements of the application and the desired properties needed.

Q: How do steel round bars compare to copper round bars?: Different applications call for distinct properties in steel and copper round bars. To begin with, steel round bars are known for their remarkable strength and durability. This versatile material can withstand high levels of stress, making it perfect for structural and industrial uses. With its high tensile strength, steel can resist pulling forces without breaking. Construction projects, automotive components, and machinery manufacturing frequently rely on steel round bars. On the other hand, copper round bars possess unique characteristics that set them apart from steel. Copper is an exceptional conductor of heat and electricity, making it indispensable in electrical wiring and plumbing systems. Its high resistance to corrosion makes copper pipes widely used in plumbing applications. Additionally, copper's antimicrobial properties make it a preferred material for medical equipment and food processing industries. When it comes to cost, steel round bars tend to be more affordable than copper round bars. Steel is abundantly available and has lower production costs compared to copper. This cost advantage makes steel a popular choice for budget-conscious applications. In terms of appearance, steel round bars have a sleek, metallic finish, while copper round bars exhibit a distinct reddish-brown appearance. This visual distinction often influences the selection of materials in architectural and decorative applications. In summary, steel round bars and copper round bars possess different properties that suit them for specific purposes. Steel offers exceptional strength and durability, making it suitable for structural and industrial applications. Copper, on the other hand, is valued for its conductivity, corrosion resistance, and antimicrobial properties, making it ideal for electrical, plumbing, and medical applications. The choice between steel and copper depends on the specific requirements of the project and the desired properties of the material.

Q: Can steel round bars be used in the manufacturing of flanges?: Certainly, the utilization of steel round bars is feasible for the production of flanges. Flanges are typically employed for the interconnection of pipes, valves, and other equipment in diverse industrial applications. Although flanges can be constructed from various materials like carbon steel, stainless steel, or alloy steel, steel round bars are commonly preferred due to their robustness and longevity. The round bars can be machined or forged into the desired flange configuration and subsequently subjected to further processing to fulfill specific requirements, such as size, thickness, and flange face type. Steel round bars possess exceptional mechanical properties and can withstand substantial pressures, rendering them suitable for application in flange manufacturing.

Send your message to us

*Email

*TEL

*Quantity

*Unit