ASTM ASME SB 637 Alloy 718 Inconel 718 N07718 Bar

ASTM ASME SB 637 Alloy 718 Inconel 718 N07718 Bar

Common Types and Sizes:

Round Bars: Most common type, available in various diameters.

Square Bars: Offered in square cross-sections, suitable for different applications.

Hexagonal Bars: Have six sides and are often used for fasteners and fittings.

Flat Bars: Have a rectangular cross-section, used for structural applications.

Common sizes vary depending on the specific application but typically range from a few millimeters to several inches in diameter.

Chemical Composition (Typical):

Nickel (Ni): 50.0 - 55.0%

Chromium (Cr): 17.0 - 21.0%

Iron (Fe): Balance

Molybdenum (Mo): 2.8 - 3.3%

Niobium (Nb): 4.75 - 5.5%

Titanium (Ti): 0.65 - 1.15%

Aluminum (Al): 0.2 - 0.8%

Carbon (C): 0.08% max

Manganese (Mn): 0.35% max

Silicon (Si): 0.35% max

Sulfur (S): 0.015% max

Phosphorus (P): 0.015% max

Mechanical Requirements:

Tensile Strength: 180 ksi (1240 MPa) min

Yield Strength (0.2% offset): 150 ksi (1035 MPa) min

Elongation: 12% min

Applications:

Inconel 718 bars find extensive use in aerospace, gas turbine engines, and nuclear reactors.

Common applications include turbine blades, rocket motors, and cryogenic storage tanks, where high strength and corrosion resistance are required.

Production Process and Quality Control Points:

Raw Material Inspection: Strict control of the chemical composition and mechanical properties of raw materials.

Melting and Casting: Advanced melting technology and precise casting process ensure uniform structure and excellent performance.

Heat Treatment: Through appropriate heat treatment processes to optimize the mechanical properties and microstructure of the alloy.

Machining and Surface Treatment: Precise machining processes and surface treatment techniques ensure dimensional accuracy and surface quality of the products.

Non-destructive Testing: Comprehensive non-destructive testing such as ultrasonic, radiographic, and magnetic particle testing for product quality assurance.

Final Inspection and Packaging: Final inspection of finished products to ensure compliance with customer requirements, and appropriate packaging to protect products from damage.

Q&A:

Q: What are the main advantages of Inconel 718 bars?

A: Inconel 718 offers high strength, excellent corrosion resistance, and good weldability, making it suitable for demanding aerospace and industrial applications.

Q: Can Inconel 718 bars be used in high-temperature environments?

A: Yes, Inconel 718 maintains its mechanical properties at elevated temperatures and is often used in gas turbine engines and nuclear reactors.

Q: How does SSM ensure the quality of its products?

A: SSM company follows strict quality control processes, from raw material inspection to final product testing, to ensure that our products meet the highest quality standards.

Q: What sizes and shapes of Inconel 718 bars does SSM offer?

A: SSM offers a wide range of sizes and shapes of Inconel 718 bars to meet the diverse needs of our customers. Please contact us for specific inquiries.

If your company has product needs or questions, please feel free to contact us, and we will be happy to assist you.

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