SAE 4320 Round Bar / AISI 4320 Bars / Alloy Steel 4320 Rods/Rings

SAE 4320 Round Bar / AISI 4320 Bars / Alloy Steel 4320 Rods/Rings

355.0 INR/Kilograms

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Product Details:

Finish Bright, Black, Polish, Peeled, Turned
Standard ASTM, ASME, SAE, AISI
Diameter 5 mm to 350 mm
Length 100 mm to 6000 mm
Specific Use For structural and high-stress applications requiring toughness and strength
Application Automobile, Engineering, Oil & Gas, Textile, Defense, Construction, Shafts, Gears
Material Alloy Steel 4320
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SAE 4320 Round Bar / AISI 4320 Bars / Alloy Steel 4320 Rods/Rings Price And Quantity

Minimum Order Quantity 1000 Kilograms
Price 355.0 INR/Kilograms

SAE 4320 Round Bar / AISI 4320 Bars / Alloy Steel 4320 Rods/Rings Product Specifications

Material Alloy Steel 4320
Type Round Bar / Rod / Ring
Application Automobile, Engineering, Oil & Gas, Textile, Defense, Construction, Shafts, Gears
Grade SAE 4320, AISI 4320
Technique Hot Rolled / Cold Drawn / Forged
Processing Annealed / Normalized / Quenched & Tempered
Tolerance H9, H11, H13 or as specified
Diameter 5 mm to 350 mm
Length 100 mm to 6000 mm
Specific Use For structural and high-stress applications requiring toughness and strength
Finish Bright, Black, Polish, Peeled, Turned
Standard ASTM, ASME, SAE, AISI

Test Certificate EN 10204 3.1 / 3.2
Hardness 187-229 HB (as supplied)
Shape Round, Square, Hex, Rings
Density ~7.85 g/cm3
Impact Value Good Toughness at Low Temperatures
Supply Condition As Rolled / Heat Treated
Yield Strength Min 415 MPa
Corrosion Resistance Moderate
Packaging Standard Export Sea-worthy Packing
Surface Condition Smooth, Free from Scale
Machinability Good
Tensile Strength Min 700 MPa

Product Description

Feature	Specification Details
Material Grade	AISI 4320 / SAE 4320 / UNS G43200
Equivalent Grade	DIN 1.6523 (Similar), SNCM420 (JIS), 20CrNi2MoA (GB)
Standard	ASTM A29, ASTM A322, SAE J404
Forms Available	Round Bar, Rods, Forged Rings, Billets
Heat Treatment	Carburizing, Normalizing, or Annealing
Core Hardness	200 300 HB (depending on heat treatment)
Surface Hardness	Up to 60 HRC (after case hardening)

Professional Product Description

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AISI 4320 Alloy Steel Round Bars, Rods, and Forged Rings are high-quality nickel-chromium-molybdenum structural steels designed for case-hardening applications. This grade offers a superior combination of high surface hardness and exceptional core ductility. It is specifically engineered to withstand heavy shock loads and fatigue, making it the preferred choice for components in the automotive, aerospace, and oil & gas industries.

Key Performance Features:

Exceptional Core Toughness: Maintains high ductility even after the surface is hardened.
High Wear Resistance: Specifically designed for carburizing to create a durable, friction-resistant outer layer.
Good Weldability: Due to its lower carbon content, it offers better welding characteristics compared to higher carbon alloys like 4340.
Precision Forging: Available in forged rings and rods for heavy-duty structural integrity.

Common Applications:

Power Transmission: Heavy-duty gears, pinions, and planetary gear systems.
Industrial Machinery: Bearings, shafts, and high-stress bushings.
Automotive: Clutch pins, differential gears, and steering components.
Aerospace: High-performance pins and landing gear structural parts.

Chemical Composition (%)

Carbon (C)	Nickel (Ni)	Chromium (Cr)	Molybdenum (Mo)	Manganese (Mn)
$0.17 - 0.22$	$1.65 - 2.00$

Versatility for Diverse Applications

Alloy Steel 4320 bars, rods, and rings are suited for use in automotive, engineering, oil & gas, textiles, defense, construction, and more. Their unique combination of strength, toughness, and machinability makes them ideal for manufacturing shafts, gears, and other high-stress components. The product's availability in a wide array of shapes and sizes adds flexibility for end users.

Quality Assurance and Compliance

Each alloy steel 4320 product is rigorously tested and comes with certificates under EN 10204 3.1/3.2. These certifications confirm compliance with international standards such as ASTM, ASME, SAE, and AISI. Manufacturing and supply are undertaken using advanced hot rolled, cold drawn, or forged techniques to ensure consistent properties and performance.

Customized Processing and Finishes

Customers can opt for a range of surface finishes, including bright, black, polished, peeled, or turned, and various process conditions like annealed, normalized, quenched & tempered. Diameters and lengths can be tailored, with tolerances such as H9, H11, or H13 available upon request, accommodating specific project requirements for structural integrity and appearance.

FAQ's of SAE 4320 Round Bar / AISI 4320 Bars / Alloy Steel 4320 Rods/Rings:

Q: How is SAE 4320 Round Bar typically processed for optimal performance?

A: SAE 4320 bars and rods are processed using techniques such as hot rolling, cold drawing, or forging, and can undergo annealing, normalizing, or quenching & tempering. These methods enhance the steel's toughness, strength, and machinability, meeting structural and high-stress application requirements.

Q: What are the primary benefits of using Alloy Steel 4320 in engineering and construction?

A: Alloy Steel 4320 offers high tensile and yield strengths, good impact resistance at low temperatures, and moderate corrosion resistance, making it ideal for applications requiring reliable performance under high stress, such as shafts, gears, and structural components in the construction and engineering sectors.

Q: When should you choose SAE 4320 bars for your application?

A: SAE 4320 is best chosen when the application demands a combination of strength, durability, and toughness, particularly in automotive, oil & gas, and structural engineering projects where components are exposed to significant mechanical stresses and variable conditions.

Q: Where are Alloy Steel 4320 Round Bars and Rings commonly used?

A: These products find usage in the manufacture of automotive parts, oil & gas equipment, textile machinery, defense systems, and construction frameworks, particularly for making components like shafts, gears, and rings that need high toughness and strong load-bearing capacity.

Q: What surface finishes and dimensions can buyers expect from these products?

A: Buyers can select from bright, black, polished, peeled, or turned finishes. Standard diameters range from 5 mm to 350 mm and lengths from 100 mm to 6000 mm. Tolerance classes such as H9, H11, or H13 can also be specified to suit particular needs.

Q: How is the quality of SAE 4320 bars assured before delivery?

A: Quality is assured through strict adherence to industry standards (ASTM, ASME, SAE, AISI) and thorough inspection. Each product is supplied with test certificates under EN 10204 3.1 or 3.2, confirming mechanical and chemical properties, supplied in sea-worthy export packaging for global delivery.

Q: What is the machinability and corrosion resistance of Alloy Steel 4320?

A: Alloy Steel 4320 offers good machinability, allowing ease in fabrication and installation. While it has moderate corrosion resistance, additional surface treatments may be recommended for environments with high corrosive exposure.

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