ASTM B637 Inconel X-750 Round Bar,UNS N07750 Round bar
Inconel X750 Round Bars are nickel-chromium precipitation hardened alloy with some titanium and aluminum elements that have marvelous oxidation and creep-resistant rupture properties. It can stand up to a temperature of 1300⁰ Fahrenheit. Due to these properties, they are used as high-temperature springs in various applications. If the temperature exceeds the maximum permissible limit which is 1300⁰ F, then the material loses its properties. The product is manufactured in such a way that it provides excellent metal quality with great reliability.
ASTM B637 Inconel X-750 (UNS N07750) is a precipitation hardenable chromium and nickel alloy used for its oxidation and corrosion resistance property. it has high strength up to 1300 deg F.
ASTM B637 Inconel X-750 Round Bar specification
Specification : ASTM B 637 / ASME SB 637, AMS 5669, AMS 5698, AMS 5699
Dimensions : ASTM, ASME
Size : 5 mm To 500 mm
Diameter : 0.1 mm to 100 mm
Length : 100 mm To 3000 mm Long & Above
Finish : Bright, Polish & Black
Grade : Inconel X-750 – UNS N07750
Form : Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc.
Types of Inconel Alloy X750 Bar
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Inconel Alloy X750 Round Bar | Inconel DIN 2.4669 Round Bar Inconel UNS N07750 Round Bar Inconel Alloy X750 Bar Inconel Alloy Round Bar ASTM B166 Inconel X750 Round Bar ASME SB166 Alloy X750 Bar |
astm-b637
Scope: This specification covers hot- and cold-worked precipitation-hardenable nickel alloy rod, bar, forgings, and forging stock for high-temperature service. Chemical analysis shall be performed on the alloy and shall conform to the chemical composition requirement in carbon, manganese, silicon, phosphorus, sulfur, chromium, cobalt, molybdenum, columbium, tantalum, titanium, aluminum, zirconium, boron, iron, copper, and nickel. The material shall follow recommended annealing treatment, solution treatment, stabilizing treatment, and precipitation hardening treatment. Tension testing, hardness testing and stress-rupture testing shall be performed on the material and shall comply to the required tensile strength, yield strength, elongation, reduction in area, and Brinell hardness.
Chemical Composition of Inconel X-750 round Bar
| C | Mn | Si | S | Cr | Co | Nb+Ta | Ti | Al | Fe | Cu | Ni |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.08 | ≤1.00 | ≤0.50 | ≤0.01 | 14.00~17.00 | ≤1.00 | 0.70~1.20 | 2.25~2.75 | 0.40~1.00 | 5.00~9.00 | ≤0.50 | ≥70.00 |
*All values are in % unit.
Alloy X750 Bars Mechanical Properties
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Inconel X750 | 8.28 g/cm3 | 1430°C | 1267 MPa | 868 MPa | 25 % |
Inconel X750 round Bar Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS |
| Inconel X750 | 2.4669 | N07750 |
Heat Treatment for Inconel X-750 Bar & Forging
Bars or forgings of ASTM B637 Gr.N07750 can be categorized into 3 types according to heat treatment furnished.
- N07750 Type 1: for service above 1100°F [593°C]; first, solution treated at 2100±25°F [1149±14°C], hold 2~4 hours, air cool; then, stabilizing treated at 1550±25°F [843 ± 14°C], hold 24 hours, air cool; finally, precipitation hardening treated at 1300±25°F [704 ± 14°C], hold 20 hours, air or furnace cool.
- N07750 Type 2: for service up to 1100°F [593°C]; first, solution treated at 1800±25°F [982±14°C], hold minimum 0.5 hours, air cool or faster; then, precipitation hardening treated at 1350±25°F [732±14°C], hold 8 hours, furnace cool to 1150±25°F [621±14°C], hold until total precipitation heat treatment has reached 18 hours, air cool.
- N07750 Type 3: first, solution treated at 1975–2050°F [1079–1121°C], hold 1~2 hours, air cool; then precipitation hardening treated at 1300±25°F [704±14°C], hold 20~24 hours, air cool.
Stress-Rupture Requirements of Inconel X-750 Bar & Forging
When the ASTM B637 Gr. N07750 bar or forging is supplied in the solution treated plus aged condition(precipitation hardening), it shall take the stress-rupture test: for N07750 Type 1 with heat treatment of solution + stabilizing + precipitation hardening, at test temperature of 1350°F [732°C] & under a stress of 45 ksi [310 MPa], the practical time period for rupture shall be no less than 100 hours with minimum 5% elongation.
