Hastelloy C276 U-boltASTM B574 · MSS SP-58 / manufacturer standard · Manufacturer, stockist & exporter, India
Alloy C-276 · UNS N10276
A Hastelloy C276 u-bolt is a U-shaped bolt for clamping pipes to supports, made from Hastelloy C276 to ASTM B574. U-bolts hold pipes to supports and structures. Sized by pipe NPS with a threaded length on each leg.
- ASTM B574
- MSS SP-58 / manufacturer standard
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is a Hastelloy C276 U-bolt?
- What it is
- A U-shaped bolt for clamping pipes to supports
- Material
- ASTM B574
- Dimensions
- MSS SP-58 / manufacturer standard
- Grade
- Hastelloy C276 · UNS N10276
- Best at
- The most aggressive mixed acids, wet chlorine and hypochlorite
Hastelloy C276 U-bolt Specification
| Product | Hastelloy C276 U-bolt |
|---|---|
| Material standard | ASTM B574 |
| Dimensional standard | MSS SP-58 / manufacturer standard |
| Sizes | M10 – M64 · ½" – 4" (others on request) |
| Threads | UNC · UN-8 · metric coarse |
| Testing | PMI · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose an U-bolt
U-bolts hold pipes to supports and structures. Sized by pipe NPS with a threaded length on each leg.
- Sized to pipe NPS
- With nuts and plates
- Matching or isolated material
More on choosing: U-bolt guide.
Hastelloy C276 U-bolt: Why C276 for u-bolts
U-bolts hold pipes to supports and structures. Sized by pipe NPS with a threaded length on each leg. In Hastelloy C276, the choice usually comes down to the medium and temperature — the rows here are the points buyers check for this exact combination.
| Why this grade | Nickel-alloy fasteners match nickel-alloy flanges in corrosive or hot service. Hastelloy C276 is picked for the most aggressive mixed acids, wet chlorine and hypochlorite. |
|---|---|
| Typical service | Chemical processing — Reactors, heat exchangers and piping for mixed acids. |
| Bolting | B7 (coated), B8M or nickel-alloy studs such as Hastelloy C276 from ASTM B574, as the project specifies |
| Sour service | Listed in NACE MR0175 / ISO 15156-3 within its limits — state it on the order |
Hastelloy C276 U-bolt Chemical Composition
| Element | Weight % |
|---|---|
| Nickel | Balance |
| Molybdenum | 15.0 – 17.0 |
| Chromium | 14.5 – 16.5 |
| Iron | 4.0 – 7.0 |
| Tungsten | 3.0 – 4.5 |
| Cobalt | 2.5 max |
| Carbon | 0.010 max |
| Manganese | 1.0 max |
Hastelloy C276 U-bolt Mechanical Properties
| Solution-annealed plate & sheet | Value |
|---|---|
| Tensile strength | 690 MPa · 100 ksi |
| Yield strength 0.2% | 283 MPa · 41 ksi |
| Elongation | 40% |
Full chemistry, properties and equivalents are on the Hastelloy C276 grade page.
Standards on this page
Other Hastelloy C276 fasteners
Hastelloy C276 U-bolts for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiHastelloy C276 U-bolt — questions buyers ask
Should U-bolts match the pipe material?
Use the same alloy, or an isolating sleeve, to avoid galvanic corrosion between pipe and bolt.
What nut is used with Hastelloy C276 u-bolts?
A nut in the same alloy, machined from ASTM B574 bar, unless the project specifies otherwise.
Which standard covers Hastelloy C276 u-bolts?
The material is ASTM B574; dimensions follow MSS SP-58 / manufacturer standard. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a Hastelloy C276 u-bolt?
The alloy price, the size and dimensions, quantity, and the testing and documents required. Send your list and we quote the same working day.
Can you supply Hastelloy C276 u-bolts to NACE MR0175?
Yes. Hastelloy C276 is listed in NACE MR0175 / ISO 15156-3 within its limits; state NACE compliance on the order and it is confirmed on the certificate.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026