SAE 4140 Bright Round Bar

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MOQ : 100 Kilograms

SAE 4140 Bright Round Bar Specification

Material
SAE 4140 Alloy Steel

Processing
Annealed, Quenched and Tempered

Technique
Hot Rolled, Cold Drawn, Peeled or Turned

Application
Automotive, Oil & Gas, Machinery, Construction, Transmission Components, Shafts, Axles, Gears

Tolerance
H9, H10, or custom tolerances as specified

Length
Standard length up to 6 meters or as required

Diameter
10 mm to 300 mm

Grade
4140

Type
Bright Round Bar

Specific Use
Precision engineering, High-stress mechanical parts

Standard
ASTM A29/A29M, AISI 4140, DIN 1.7225, JIS G4105

Finish
Bright, Polished

Machinability
Fair to Good (improves after annealing)

Surface Condition
Scale free, Smooth finish

Hardness
28-32 HRC (as supplied) or adjustable upon heat treatment

Tensile Strength
850 - 1000 MPa (as supplied)

Elongation
12% (in 50 mm)

Impact Energy
>= 28 Joules at -20C

Heat Treatment Capability
Excellent for hardening and tempering

Corrosion Resistance
Moderate; not recommended for highly corrosive environments

Density
7.85 g/cm3

Yield Strength
655 MPa

SAE 4140 Bright Round Bar Trade Information

Minimum Order Quantity
100 Kilograms

Payment Terms
Cash in Advance (CID)

Supply Ability
5000 Kilograms Per Month

Delivery Time
10 Days

Main Domestic Market
All India

About SAE 4140 Bright Round Bar

Experience a hot deal on the incomparable SAE 4140 Bright Round Bar, the champion in precision engineering and high-stress applications. Renowned across India by leading suppliers and traders, this potent alloy steel bar boasts a dense 7.85 g/cm3 build, a scale-free, smooth, polished surface, and superior mechanical properties: 28-32 HRC hardness and up to 1000 MPa tensile strength. Designed for seamless machinability and excellent heat treatment, these bars ensure your purchase delivers reliability in automotive, oil & gas, and construction. Choose unmatched quality with confidence!

Precision Usage and Material Excellence

SAE 4140 Bright Round Bar excels in high-stress and precision engineering applications, perfect for automotive, machinery, shaft, axle, and gear manufacturing. With its smooth, scale-free, and polished finish, it integrates seamlessly with demanding surfaces where superior strength and durability are crucial. The alloy's unique balance of machinability and toughness makes it a preferred champion for those requiring powerful yet consistent material performance in building robust transmission components and equipment.

Export Logistics and Sample Policy Highlights

Goods transport for SAE 4140 Bright Round Bar typically dispatches from major Indian FOB ports, servicing key export markets in Asia, Europe, and the Middle East. Proposal amounts are transparent, with freight options customizable based on destination and shipping needs. Sample policies focus on mutual agreement, with small quantities available for evaluation before bulk purchase, ensuring that buyers assess the product's potent attributes and suitability for their specialized requirements without risk.

FAQ's of SAE 4140 Bright Round Bar:

Q: How does the heat treatment process affect SAE 4140 Bright Round Bar properties?

A: Heat treatment, including annealing, quenching, and tempering, significantly enhances the hardness and tensile strength of SAE 4140 Bright Round Bar while enabling adjustable mechanical characteristics according to specific engineering needs.

Q: What industries commonly use SAE 4140 Bright Round Bar?

A: This bright round bar is popular in automotive, oil & gas, machinery, construction, and precision transmission components, where reliable, high-strength alloy steel is essential for shafts, axles, and gears.

Q: When is it advisable to choose SAE 4140 over other alloy steels?

A: Choose SAE 4140 when you require potent fatigue resistance, moderate corrosion protection, and champion-grade mechanical strength for demanding engineering applications or high-stress mechanical parts.

Q: Where is the product typically delivered from, and which markets are supplied?

A: SAE 4140 Bright Round Bars are shipped from major Indian FOB ports and exported mainly to Asia, Europe, and Middle Eastern markets through reputable suppliers and traders.

Q: What are the key benefits of purchasing this alloy from an established Indian supplier?

A: Purchasing from a reputable Indian supplier offers confidence in product quality, a wide range of size and tolerance options, reliable supply chains, and access to technical expertise for application-specific requirements.

Q: How is the surface condition and finish maintained for these bars?

A: Each bar undergoes advanced processing, such as hot rolling, cold drawing, peeling, or turning, followed by polishing to ensure a bright, smooth, and scale-free finish for seamless integration into high-precision assemblies.