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Hastelloy C-276 Fasteners
Patriot Bolt machines Hastelloy C-276 fasteners from certified ASTM B574 bar (UNS N10276). C-276 is a nickel-molybdenum-chromium alloy with tungsten, used for severe reducing acids, wet chlorine and sour service.
This page brings together the C-276 fasteners we make, the property limits for bar, bolts and nuts, and how C-276 compares with other nickel and corrosion-resistant alloys.
[ Quick Specs ]
Hastelloy C-276 at a Glance
- Material
- Hastelloy C-276, UNS N10276, W.Nr. 2.4819
- Specifications
- ASTM B574 bar · ASTM F468 bolts and studs · ASTM F467 nuts
- Strength
- 100 ksi min tensile, 41 ksi min yield (B574, annealed)
- Key elements
- 15–17% Mo, 14.5–16.5% Cr, 3–4.5% W
- Products
- Stud bolts, heavy hex nuts, hex cap screws, socket head cap screws
Hastelloy C-276 Fasteners We Machine
Choose a product to see its standards and options. Every order ships with mill test reports traceable to the heat.
Hastelloy C-276 Stud BoltsFull C-276 page
Hastelloy C-276 Heavy Hex NutsMatching nut
C-276 Hex Cap ScrewsMade in C-276
C-276 Socket Head Cap ScrewsMade in C-276Hastelloy C-276 Mechanical Properties
| Specification | Tensile / proof, min | Yield (0.2%), min | Hardness |
|---|---|---|---|
| ASTM B574 bar, annealed | 100 ksi tensile | 41 ksi | — |
| ASTM F468 Ni 276 bolts and studs | 110 ksi tensile | 45 ksi | 20–32 HRC |
| ASTM F467 Ni 276 hex nuts | 110 ksi proof | — | 20 HRC min |
Full chemistry is on the Hastelloy C-276 stud bolts page.
C-276 vs. Other Nickel and Corrosion-Resistant Alloys
| Grade | Strength, min (tensile / yield) | Typical use |
|---|---|---|
| Hastelloy C-276 (B574, annealed) | 100 / 41 ksi | Severe reducing acids, wet chlorine and sour service |
| Hastelloy C-22 (B574, annealed) | 100 / 45 ksi | Oxidizing and mixed acids; pitting and crevice corrosion |
| Inconel 625 (B446 Grade 1, annealed) | 120 / 60 ksi | Seawater, subsea and acid service |
| Incoloy 825 (B425, annealed) | 85 / 35 ksi | Sulfuric and phosphoric acid; seawater |
| 316 stainless (A193 B8M Class 1) | 75 / 30 ksi | General corrosion resistance; mild chemicals |
Compare all grades in the Fastener Materials Matrix.
Hastelloy C-276 Fastener FAQ
What is Hastelloy C-276 used for?
Chemical processing, pollution control and sour oil and gas service, especially reducing acids, wet chlorine and chloride-bearing streams.
Which C-276 fasteners does Patriot Bolt make?
We machine C-276 stud bolts, heavy hex nuts, hex cap screws and socket head cap screws, as well as custom parts made to your drawing.
Which specifications cover C-276 bolting?
ASTM B574 covers the bar, ASTM F468 covers bolts and studs as alloy Ni 276, and ASTM F467 covers the nuts.
Do C-276 fasteners come with certifications?
Yes. Patriot Bolt is ISO 9001:2015 certified, and every C-276 order includes mill test reports traceable to the heat and a certificate of conformance to your purchase order.
Request a Quote
Send us the product, size, specification and quantity, or upload your drawing. Call (281) 581-0176 or request a quote.