1. What are the chemical compositions of these nickel-based alloy rods/bars?
Answer:
Hastelloy C276 (UNS N10276, W. Nr. 2.4819): Ni 57% min, Cr 15–17%, Mo 15–17%, Fe 5% max, plus small amounts of W, Co, Mn, and C. Exceptional resistance to strong oxidizing and reducing environments.
Inconel 600 (UNS N06600): Ni 72%, Cr 14–17%, Fe 6–10%, excellent high-temperature oxidation and corrosion resistance.
Inconel 601 (UNS N06601): Ni 58–63%, Cr 21–25%, Fe 5–10%, superior oxidation resistance at elevated temperatures.
Inconel 718 (UNS N07718): Ni 50–55%, Cr 17–21%, Nb + Ta 4.75–5.5%, Mo 2.8–3.3%, high-strength precipitation-hardening alloy.
Inconel 825 (UNS N08825): Ni 38–46%, Fe 21.5–25%, Cr 19.5–23.5%, Mo 2.5–3.5%, Cu 1.5–3.0%, corrosion-resistant in acids.
Inconel X-750 (UNS N07750): Ni 71%, Cr 14–17%, Fe 7%, Al + Ti 1.2–2%, high-temperature strengthening via precipitation hardening.
2. What are the typical mechanical properties of these rods/bars?
Answer:
Hastelloy C276: Tensile 515–620 MPa, Yield ~275 MPa, Elongation ≥40%
Inconel 600: Tensile 550 MPa, Yield 240 MPa, Elongation ≥30%
Inconel 601: Tensile 620 MPa, Yield 275 MPa, Elongation ≥30%
Inconel 718: Tensile 1240 MPa, Yield 1030 MPa, Elongation ≥12% (after heat treatment)
Inconel 825: Tensile 585 MPa, Yield 275 MPa, Elongation ≥30%
Inconel X-750: Tensile 1030 MPa, Yield 690 MPa, Elongation 12–20%
3. What are common applications for these nickel-based alloy rods/bars?
Answer:
Hastelloy C276: Chemical processing, pollution control, acid-resistant equipment, marine applications.
Inconel 600: Heat exchangers, furnace parts, chemical equipment, aerospace components.
Inconel 601: Furnace hardware, high-temperature oxidation-resistant parts.
Inconel 718: Aerospace engine components, gas turbines, nuclear components, oil & gas fasteners.
Inconel 825: Chemical processing, offshore platforms, acid-resistant equipment.
Inconel X-750: Turbine blades, springs, high-temperature fasteners, nuclear components.
4. What sizes and forms are available for these rods/bars?
Answer:
Diameter: 6 mm – 500 mm (typical, depending on alloy and manufacturer)
Length: 1 m – 6 m standard, can be cut to custom lengths
Forms: Hot-rolled, forged, annealed, solution-treated, or cold-drawn with bright or matte finish
Tolerances: Custom tolerances available for precision applications
5. How is the quality of these rods/bars verified?
Answer:
Chemical composition: OES/XRF testing
Mechanical tests: Tensile, yield, elongation, hardness
Non-destructive testing: Ultrasonic, eddy current, or dye penetrant
Dimensional inspection: Diameter, straightness, and surface finish
Certification: EN 10204 3.1/3.2 Mill Test Certificates, heat treatment records
