At Sunjin Metals Vina (SJM Vina), we take pride in being a trusted importer and distributor of high-quality piping materials sourced directly from leading industrial hubs, including South Korea, Japan, and other developed nations. Committed to international quality standards, SJM Vina provides optimal solutions for industrial piping systems, with ASTM A105 forged carbon steel being one of our flagship products trusted by global clients.
What is ASTM A105?
ASTM A105 is the standard specification for forged carbon steel components developed by the American Society for Testing and Materials (ASTM). This material is designed exclusively for the manufacture of piping system components such as flanges, valves, and high-pressure fittings.
With a carbon content of $\le 0.35\%$, ASTM A105 falls under the category of low-carbon steel forgings, offering a perfect balance of strength, excellent machinability, and superior weldability.
Technical Characteristics of ASTM A105
ASTM A105 products are renowned for their stable performance in high-temperature and high-pressure environments. The material boasts a high tensile strength of up to 485 MPa while maintaining excellent toughness even at low temperatures. Compared to ordinary carbon steel, ASTM A105 offers significantly better mechanical processing properties.
1. Chemical Composition
The carbon content is strictly controlled below $0.35\%$ to ensure optimal physical properties:
| Carbon (C) | ≤ 0.35 |
| Silicon (Si) | ≤ 0.35 |
| Manganese (Mn) | 0.60 – 1.05 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.050 |
| Copper (Cu) | ≤ 0.40 |
| Nickel (Ni) | ≤ 0.40 |
| Molybdenum (Mo) | ≤ 0.12 |
| Vanadium (V) | ≤ 0.08 |
| Chromium (Cr) | ≤ 0.30 |
2. Mechanical Properties
According to the ASTM A105/A105M-2018 standard, the core mechanical requirements include:
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Tensile Strength: ≥ 485 MPa
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Yield Strength: ≥ 250 MPa
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Elongation: ≥ 22%
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Brinell Hardness: ≤ 187 HB (Ensuring excellent machinability).
Key Advantages
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Superior Processability: Low carbon content supports efficient cutting, drilling, and cold forging; welding is seamless without porosity or cracking.
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Temperature and Pressure Stability: Capable of long-term operation at temperatures up to 425°C. In tests on DN150 pipelines at 9.8 MPa for 24 hours, the pressure drop was recorded at only 0.03%/hour.
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Economic Efficiency: Approximately 30% lower cost compared to stainless steel, making it ideal for large-scale infrastructure projects.
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International Certification: Meets NORSOK M-650 offshore standards, satisfying the rigorous demands of North Sea oilfield conditions.
Typical Applications
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Oil and Gas Pipelines: Capable of withstanding low-temperature impacts down to -29°C in cold climate zones.
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Thermal Power Plants: Ideal for boiler and steam systems operating at critical temperatures of 425°C.
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Chemical Pressure Vessels: Excellent resistance to acid and alkali corrosion in acidic media environments.
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Construction and Infrastructure: Used in specialized steel structures, maintaining impact toughness at temperatures as low as -46°C.
Ensuring safety and longevity for your projects starts with choosing certified materials. Sunjin Metals Vina guarantees authentic ASTM A105 products with full CO/CQ documentation from prestigious manufacturers in South Korea and Japan.
Contact Information:
Sunjin Metals Vina (SJM Vina)
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Address: 628 Le Hong Phong, Vuon Lai Ward, Ho Chi Minh City, Vietnam
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Hotline: +84 33 4233 127
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Email: sjmvina@sunjinmetal.com
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Tax Code: 0315448500
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Website: sjmvina.com.vn
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