AISI 4130, 4140, 4340 & ASTM A105 AS Round Bars & Rods.
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Product Description:
Experience versatility and performance with our AISI 4130, 4140, 4340 AS Round Bars and Rods, designed for exceptional strength and toughness in demanding applications such as automotive, aerospace, and oilfield industries. These alloys provide superb fatigue strength and resilience.
Complementing these, our ASTM A105 AS Round Bars and Rods deliver reliable performance in high-temperature and high-pressure environments, commonly used in flanges, fittings, and valves. Available in various diameters and specifications to meet precise engineering needs.
High-Performance Alloy Steel Round Bars and Rods are engineered to meet stringent industrial requirements. Manufactured to precise specifications, these bars and rods are ideal for applications requiring superior strength, corrosion resistance, and durability in extreme environments.
Product Overview
Standards:
- AISI: 4130, 4140, 4340.
- ASTM: A105 (Carbon Steel Forgings for Piping Applications).
Forms:
- Round Bars
- Square Bars
- Hexagonal Bars
- Flat Bars
- Custom Rods
Specifications:
- Grades: AISI 4130, AISI 4140, AISI 4340, ASTM A105.
- Surface Finish: Bright Polished, Black, Rough Turned, Heat Treated.
Chemical Composition
Grade | C (%) | Mn (%) | Si (%) | P (%) | S (%) | Cr (%) | Mo (%) | Ni (%) |
AISI 4130 | 0.28-0.33 | 0.40-0.60 | 0.15-0.35 | ≤0.035 | ≤0.040 | 0.80-1.10 | 0.15-0.25 | – |
AISI 4140 | 0.38-0.43 | 0.75-1.00 | 0.15-0.35 | ≤0.035 | ≤0.040 | 0.80-1.10 | 0.15-0.25 | – |
AISI 4340 | 0.38-0.43 | 0.60-0.80 | 0.15-0.35 | ≤0.035 | ≤0.040 | 0.70-0.90 | 0.20-0.30 | 1.65-2.00 |
ASTM A105 | 0.35 max | 0.60-1.05 | 0.10-0.35 | ≤0.035 | ≤0.040 | 0.30 max | 0.12 max | – |
Mechanical Properties
Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HBW) |
AISI 4130 | ≥560 | ≥460 | ≥18 | 156-217 |
AISI 4140 | ≥655 | ≥415 | ≥15 | 197-241 |
AISI 4340 | ≥745 | ≥470 | ≥12 | 197-241 |
ASTM A105 | ≥485 | ≥250 | ≥22 | 187 max |
Key Features
- High Strength and Toughness: Exceptional mechanical properties for demanding applications.
- Corrosion Resistance: Suitable for harsh environments, including high temperatures and pressures.
- Machinability: Excellent machinability for complex designs and precision engineering.
- Heat Resistance: Ideal for high-temperature applications.
- Versatility: Widely used across multiple industries due to their adaptability.
Available Dimensions
- Diameter Range: 6 mm to 600 mm.
- Length: 3 to 6 meters (Custom lengths available).
- Tolerance: As per ASTM A276, A479 standards.
- Heat Treatment:
- Annealed
- Normalized
- Quenched & Tempered
Quality Assurance
- 100% Radiographic Testing (RT) for defect-free products.
- Ultrasonic Testing (UT) for internal consistency.
- Compliance with ASTM, ASME, and DIN standards.
- Third-party inspection reports available on request.
Why Choose Our Alloy Steel Round Bars and Rods?
- Premium Quality: Manufactured to meet or exceed global standards.
- Customization: Tailored sizes and finishes for your specific needs.
- Fast Delivery: Extensive inventory for quick dispatch.
- Global Reach: Exported to multiple industries worldwide.
Contact us today for high-quality AISI 4130, 4140, 4340, and ASTM A105 Alloy Steel Round Bars and Rods for your industrial applications!
