Materials / Hastelloy C-276

Hastelloy C-276Chemical service

A nickel-molybdenum-chromium alloy for severe chemical-processing and mixed-media environments.

Material specification overviewCompare Materials

Material positioning

Hastelloy C-276 Fasteners

A corrosion-resistant alloy considered for aggressive acids, chlorides and process media where the material grade and manufacturing route must be reviewed together.

Positioning: Severe corrosion service
Available forms: Bolts, studs, nuts, washers, machined parts and round bar
Documentation: PMI, material certification and inspection records

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Engineering reference

Performance and service profile

Representative information for preliminary review. Final values depend on product form, dimensions, heat treatment and governing specification.

Typical tensile strengthTypically 690 MPa or greater in common solution-annealed product specifications

Typical yield strengthTypically 280 MPa or greater, depending on product form

Reference conditionSolution annealed

Temperature capabilityTemperature suitability depends strongly on the process medium; selection is driven by corrosion conditions before a general thermal limit is assigned.

Corrosion characteristicsExceptional resistance to a wide range of oxidizing and reducing acids, chlorides, pitting and crevice attack.

Typical heat treatmentSolution annealing; avoid unqualified post-process thermal exposure

Typical applications

Chemical reactors and vessels
Acid-processing equipment
Waste and pollution-control systems
Severe chemical-service fasteners

Standards support

ASTM B574
ASME material requirements
Order-specific fastener specifications

Documentation support

MTC / MTR
EN 10204 3.1
PMI report
Corrosion-test records when specified
Third-party inspection support