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Alloy Steel 300M Round Bars / AISI 300M Aerospace Rods / SAE 300M Bar / Rings
5000.0 INR/Kilograms
Product Details:
- Grade 300M
- Type Round Bars, Rods, Bars, Rings
- Diameter 8 mm to 300 mm
- Finish Black, Bright, Peeled, Rough Turned, Polished
- Technique Hot Rolled, Cold Drawn, Forged
- Application Aerospace, Defense, Automotive, Structural, and High-stress Components
- Tolerance H9, H10 or custom
- Click to view more
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Alloy Steel 300M Round Bars / AISI 300M Aerospace Rods / SAE 300M Bar / Rings Price And Quantity
- 5000.0 INR/Kilograms
- 1000 Kilograms
Alloy Steel 300M Round Bars / AISI 300M Aerospace Rods / SAE 300M Bar / Rings Product Specifications
- Aircraft landing gear, Aerospace structural parts, Shafts, Gears, Fasteners
- Annealed, Heat Treated, Quenched and Tempered
- Aerospace, Defense, Automotive, Structural, and High-stress Components
- Custom lengths up to 6 meters (20 feet)
- AMS 6257, AMS 6417, MIL-S-8844, ASTM A579
- H9, H10 or custom
- Alloy Steel 300M (AISI 300M / SAE 300M)
- Black, Bright, Peeled, Rough Turned, Polished
- 8 mm to 300 mm
- Round Bars, Rods, Bars, Rings
- Hot Rolled, Cold Drawn, Forged
- 300M
- Annealed, Hardened & Tempered, or as per customer requirements
- Moderate, Protective coating recommended
- 7.85 g/cm3
- 50% (minimum)
- 12% (minimum)
- 1930 MPa (Min) after heat treatment
- 1425-1540C
- 28-36 HRC (after heat treatment)
- 50% compared to 1212 steel
- >35 J at -54C
- 1655 MPa (Min) after heat treatment
Product Description
300M Alloy Steel is a vacuum-melted, low-alloy steel that is essentially a modification of AISI 4340 with added Silicon (approx. 1.60%). This addition allows the material to be tempered at higher temperatures while maintaining extreme hardness and preventing embrittlement, resulting in one of the highest strength-to-weight ratios of any low-alloy steel.
Key Specifications & Properties
| Feature | Details |
| Common Name | 300M / AISI E4340M / AMS 6417 / AMS 6419 |
| Chemical Composition | Nickel (1.65% 2.00%), Silicon (1.45% 1.80%), Vanadium (0.05% min) |
| Tensile Strength | $1860 - 2100 text{ MPa}$ ($270,000 - 300,000 text{ psi}$) |
| Fracture Toughness | Excellent resistance to crack propagation at high strength levels |
| Melting Process | Vacuum Induction Melted (VIM) or Vacuum Arc Remelted (VAR) |
Engineered for Extreme Performance
Alloy Steel 300M bars are designed for high-stress environments, particularly within aerospace, defense, and structural sectors. Their exceptional strength, coupled with reliable toughness and fatigue resistance, ensures safety and longevity in applications like aircraft landing gear, gears, shafts, and fasteners. This grade's specific properties are achieved through precise processing and heat treatment methods.
Customizable to Fit Your Needs
Whether you require hot rolled, cold drawn, or forged bars, 300M round bars and rods can be fabricated in diameters ranging from 8 mm to 300 mm and lengths up to 6 meters. With multiple finish options including bright, black, peeled, polished, and tolerance grades (H9, H10, or custom), we accommodate diverse project requirements and stringent industry specifications.
Quality and Compliance
Our products adhere to internationally recognized standards such as AMS 6257, AMS 6417, and MIL-S-8844. These certifications guarantee mechanical integrity, traceability, and uniform performance. We offer delivery in annealed, heat-treated, or custom-specified conditions to suit your processing or end-use needs.
FAQ's of Alloy Steel 300M Round Bars / AISI 300M Aerospace Rods / SAE 300M Bar / Rings:
Q: How is Alloy Steel 300M round bar processed for aerospace and defense applications?
A: Alloy Steel 300M bars undergo precise hot rolling, cold drawing, or forging, followed by controlled heat treatments such as annealing, hardening, tempering, and sometimes quenching. This ensures they achieve the targeted hardness (28-36 HRC) and mechanical properties necessary for critical aerospace and defense components.Q: What benefits do 300M bars offer in high-stress applications?
A: 300M bars provide exceptional tensile (minimum 1930 MPa) and yield strength (minimum 1655 MPa), high toughness, and superior resistance to fatigue and shock loading. These attributes make them reliable for use in aircraft landing gear, structural assemblies, gears, and fasteners where safety and durability are paramount.Q: When is protective coating recommended for Alloy Steel 300M products?
A: Due to their moderate corrosion resistance, it's advisable to apply protective coatings to 300M bars when used in corrosive environments or for extended exposure, especially in aerospace and automotive applications. This enhances their longevity and operational safety.Q: Where can Alloy Steel 300M bars and rings be used?
A: 300M bars and rings are versatile, serving industries like aerospace (structural parts, fuselage frames, landing gear), defense, automotive (shafts, gears), and heavy structural engineering, wherever high strength-to-weight ratio and toughness are essential.Q: What machining considerations exist for Alloy Steel 300M?
A: With a machinability rating of 50% compared to 1212 steel, 300M requires appropriate tooling and machining parameters. Pre-machining in the annealed state is common, followed by heat treatment. Post-hardening, finish machining may require specialized carbide tools.Q: How may the delivery condition of 300M rods be specified?
A: 300M rods are supplied in various delivery conditions: annealed, hardened and tempered, or as per customer specification. The chosen condition depends on the final processing steps and the intended usage environment.Tell us about your requirement
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