Inconel X-750 Fasteners
Inconel X-750 fasteners for sustained high-temperature joints — -320 °F to 1200 °F service window, up to 180 ksi room-temperature tensile strength, and 136 ksi retained at 1200 °F in the collected NASA fastener-material table.
Last updated: 2026-11
Specifications
Inconel X-750 is the collected NASA fastener-material table's hot-strength entry: no surface treatment required, a -320 to 1200 °F useful design temperature limit, up to 180 ksi ultimate tensile strength at room temperature, and the table's hot-strength comment — 136 ksi at 1200 °F — for joints where the fastener must still carry load at temperature. Where Inconel 718 covers the widest strength envelope but stops at 900 °F in the same table, X-750 is the row for continuous service deeper into the 1000–1200 °F band.
| Designation | Inconel X-750 (nickel-chromium alloy, precipitation hardenable; the collected source uses the Inconel X-750 designation without a UNS callout) |
|---|---|
| Useful design temperature limit | -320 to 1200 °F (collected NASA fastener-material table, °F verbatim) |
| Ultimate tensile strength, room temperature | Up to 180 ksi (collected table, ksi verbatim) |
| Hot strength | 136 ksi at 1200 °F (collected table comment, verbatim) |
| Surface treatment per source table | None |
| Positioning vs Inconel 718 | Same table: 718 lists up to 220 ksi but a 900 °F limit; X-750 lists up to 180 ksi with a 1200 °F limit and a printed hot-strength value at temperature |
| MOQ / lead time | Not owner-confirmed for this family — confirmed at quotation |
Materials
- Inconel X-750 nickel-chromium alloy
Ordering & documentation
Documents
Shipments are backed by Mill Test Certificate (MTC), Dimensional Report, Salt Spray Test Report on request, with full batch traceability from raw material to finished product. Quality management follows the owner-confirmed compliance list: ISO 9001:2015, RoHS, REACH. Exact document sets are confirmed on the order.
Quotation
- The fastener family (Inconel X-750 Fasteners) plus the standard designation from your drawing — DIN / ISO / JIS / ASTM / ANSI, or a drawing for custom parts.
- Size (diameter and length), thread type (metric or inch), property class or grade, and coating or finish.
- Quantity per size and your target delivery date.
- Destination country, and any required documents (for example a mill test certificate) so the quote includes them.
Sample & supply
Minimum order quantities and lead times for this family are confirmed at quotation — send your sizes, grades and quantities on the RFQ and the quote will carry a firm schedule. Sample availability is confirmed with the quotation.
Storage & shipping
Parts are packed for export and shipped factory-direct to buyers in Europe, Asia, the Americas and the Middle East. Store fasteners dry and protected until installation, and keep coated parts in their packaging until use; specific packing and preservation requirements can be stated on the order and confirmed at quotation.
Frequently asked questions
Inconel 718 or Inconel X-750 for an elevated-temperature joint?
Read the two rows of the collected NASA table side by side: Inconel 718 gives up to 220 ksi but a -423 to 900 °F window, while X-750 gives up to 180 ksi across -320 to 1200 °F and retains 136 ksi at 1200 °F. The hotter the sustained service temperature, the more X-750's row matters.
What should an RFQ for Inconel X-750 fasteners state?
State the designation (Inconel X-750), fastener type and thread sizes, the sustained service temperature (hot strength degrades with temperature — the collected table quotes 136 ksi at 1200 °F), and quantity per size. Commercial terms are confirmed at quotation.
Request a Quote
Get factory-direct pricing from the manufacturer.
What to include in your inquiry
- ✓ Standard and property class (e.g. DIN 912, ISO 4762, class 8.8) — or a drawing for custom parts.
- ✓ Sizes, lengths and thread type (metric or inch).
- ✓ Quantity per size and your target delivery date.
- ✓ Destination country, plus any coating or finish requirement.
- ✓ Any documents you need with the shipment (e.g. mill test certificate) so the quote includes them.
- ✓ Your inquiry goes straight to the factory team by email and gets a reply within 24 hours.
- ✓ Factory-direct pricing
- ✓ Standard and custom specifications
- ✓ Factory-direct export to buyers in Europe, Asia, the Americas and the Middle East
- ✓ Full fastener family support