Description
Product Description
API 5L Grade B X46 is a specification of steel pipes used primarily in the transportation of gas, water, and oil in the petroleum and natural gas industries. The “API” refers to the American Petroleum Institute, which establishes the standards for these products. The Grade B indicates a specific grade of steel with defined chemical and mechanical properties, while “X46” signifies the minimum yield strength of 46,000 psi (pounds per square inch).
Chemical Composition of API 5L Grade B X46
| Element | Maximum % |
|---|---|
| Carbon (C) | 0.26 |
| Manganese (Mn) | 1.20 |
| Phosphorus (P) | 0.030 |
| Sulfur (S) | 0.030 |
| Silicon (Si) | 0.45 |
| Nickel (Ni) | 0.40 |
| Chromium (Cr) | 0.30 |
| Copper (Cu) | 0.40 |
| Molybdenum (Mo) | 0.15 |
| Vanadium (V) | 0.08 |
| Niobium (Nb) | 0.05 |
| Titanium (Ti) | 0.04 |
Mechanical Properties API 5L Grade B X46
| Property | Value |
|---|---|
| Yield Strength (YS) | Minimum 46,000 psi (317 MPa) |
| Tensile Strength (TS) | Minimum 63,100 psi (435 MPa) |
| Elongation | 21% minimum in 2 inches (50 mm) |
| Charpy Impact Test | Varies by thickness and test temperature, typically around 27 J at 0°C |
| Hardness (Brinell) | Maximum 241 HBW |
| Modulus of Elasticity | 200 GPa (29,000 ksi) |
| Poisson's Ratio | 0.3 |
| Reduction of Area | 35% minimum |
| Fracture Toughness | High fracture toughness for use in high-pressure environments |
Conclusion
API 5L Grade B X46 is a robust and reliable steel pipe that meets the stringent requirements of the oil and gas industry. Its combination of strength, durability, and compliance with international standards makes it a preferred choice for pipeline construction and other critical applications.
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