ASTM B574 Hastelloy C276 Bright Bar High Nickel-Chromium Alloy
Precision Machinable for Industrial Machinery Parts
More Specification Informations
| Products Name | Hastelloy C276 Bright Bar |
| Diameter | 5 - 350mm |
| Length | custom cutting any length as request |
| Surface | bright, Black |
| Brand | DELTA |
| Service | cutting, Polishing |
| MOQ | 2 Kgs |
| Other Type | bar, strip,coil,pipe.sheet, plate,wire.etc |
| Packing | Wooden box |
| Loading Port | Shanghai Port |
| Price term | EXW,FOB,CIF,CFR |
| Deliver time | within 12 days |
ASTM B574 Hastelloy C276 Bright Bar High Nickel-Chromium Alloy
Precision Machinable for Industrial Machinery
In the realm of industrial manufacturing, the demand for materials
that combine corrosion resistance, mechanical strength, and
precision machinability has never been higher. ASTM B574 Hastelloy
C276 Bright Bar emerges as a standout solution, leveraging its high
nickel-chromium-molybdenum composition to excel in the harshest
operational environments. This precision-engineered alloy bar is
tailored for producing critical industrial machinery parts, where
reliability and performance directly impact operational efficiency
and safety.
Core Composition: The Foundation of Superior Performance
Hastelloy C276 (UNS N10276) is a nickel-based superalloy whose
exceptional properties stem from its precisely balanced chemical
composition, strictly regulated under the ASTM B574 standard.
Nickel forms the alloy’s backbone, ensuring structural stability
and resistance to both oxidizing and reducing environments, while
chromium enhances oxidation resistance and tungsten boosts overall
strength. The low carbon content minimizes carbide precipitation
during welding and high-temperature exposure, preserving corrosion
resistance in welded joints—a key advantage for machinery assembly.
Table 1: Chemical Composition of ASTM B574 Hastelloy C276 Bright
Bar (wt%)
| Element | Content Range | Function |
|---|
| Nickel (Ni) | 57.0 min (balance) | Provides base corrosion resistance and structural stability |
| Chromium (Cr) | 14.5 – 16.5 | Enhances oxidation resistance and protects against pitting
corrosion |
| Molybdenum (Mo) | 15.0 – 17.0 | Boosts resistance to reducing acids and localized corrosion |
| Iron (Fe) | 4.0 – 7.0 | Improves workability and mechanical stability |
| Tungsten (W) | 3.0 – 4.5 | Increases tensile strength and hardness without sacrificing
ductility |
| Cobalt (Co) | 2.5 max | Controlled to maintain alloy purity and performance |
| Carbon (C) | 0.010 max | Prevents carbide precipitation and preserves weld integrity |
| Silicon (Si) | 0.08 max | Minimizes oxidation during processing |
| Manganese (Mn) | 1.0 max | Aids in deoxidation while avoiding brittleness |
Key Properties: Engineered for Industrial Demands
The ASTM B574 standard defines rigorous requirements for Hastelloy
C276 Bright Bar, ensuring consistent performance across mechanical
strength, corrosion resistance, and thermal stability—attributes
critical for industrial machinery parts.
Mechanical Strength & Machinability
Despite its high alloy content, Hastelloy C276 Bright Bar offers
excellent precision machinability when paired with appropriate
tooling and techniques. Its controlled hardness (28–36 HRC) and
moderate work-hardening rate allow for tight tolerances in CNC
machining, producing parts like valve stems, pump impellers, and
sensor housings with surface finishes suitable for high-precision
applications. The alloy maintains impressive mechanical properties
even after machining, with tensile strength exceeding 760 MPa and
elongation of 40% minimum, ensuring parts can withstand dynamic
loads in machinery operation.
Table 2: Mechanical Properties of Annealed ASTM B574 Hastelloy C276
Bright Bar
| Property | Minimum Value | Unit |
|---|
| Tensile Strength | 760 | MPa (110 ksi) |
| Yield Strength (0.2% offset) | 355 | MPa (52 ksi) |
| Elongation (in 2 inches) | 40 | % |
| Hardness (Rockwell C) | 28 – 36 | HRC |
| Modulus of Elasticity | 205 | GPa |
Corrosion & Thermal Resistance
One of Hastelloy C276’s most defining traits is its universal
corrosion resistance. It withstands a broad spectrum of aggressive
media, including sulfuric acid, hydrochloric acid, seawater,
chlorine gas, and mixed industrial chemicals—making it ideal for
machinery in chemical processing and marine environments. Unlike
conventional stainless steels, it resists pitting, crevice
corrosion, and stress corrosion cracking in high-chloride settings.
Thermally, the alloy performs reliably across extreme ranges: it
retains ductility at cryogenic temperatures and maintains strength
up to 1093°C (2000°F), suitable for parts in high-temperature
machinery like gas turbine components and heat exchangers.
Industrial Applications: Precision Parts for Critical Systems
ASTM B574 Hastelloy C276 Bright Bar is the material of choice for
manufacturing machinery parts in industries where failure is costly
or hazardous. Its versatility allows it to address diverse
operational challenges:
- Chemical Processing: Valves, pump shafts, and reactor internals
rely on the alloy’s resistance to corrosive feedstocks and cleaning
agents, reducing unplanned downtime from material degradation.
- Oil & Gas: Downhole tools (drill collars, stabilizers) and offshore
platform components withstand hydrogen sulfide (H₂S) and saltwater
corrosion, critical for deep-sea and sour gas operations.
- Power Generation: Flue gas desulfurization (FGD) system parts and
gas turbine bolts endure high temperatures and acidic emissions
without corrosion.
- Pharmaceuticals & Food Processing: Sanitary valves and mixing
blades meet strict purity standards, resisting corrosion from
sterilizing agents while avoiding product contamination.
- Marine Engineering: Heat exchangers and condenser tubes maintain
integrity in saltwater environments, outperforming titanium in
cost-effectiveness for medium-scale applications.
Compliance & Quality: Beyond ASTM B574
Adherence to the ASTM B574 standard ensures dimensional accuracy
(typically ±0.02mm for diameter) and surface quality (bright finish
with Ra ≤ 0.8μm) for the bright bar, eliminating the need for
post-machining polishing. Reputable manufacturers further validate
quality through non-destructive testing (NDT) like ultrasonic
inspection and chemical composition verification, ensuring each bar
meets application-specific requirements.
Conclusion
ASTM B574 Hastelloy C276 Bright Bar bridges the gap between extreme
environmental resistance and precision manufacturability, making it
indispensable for high-performance industrial machinery parts. Its
balanced chemistry, regulated properties, and versatile
applications position it as a premium material for industries
prioritizing durability, efficiency, and safety. For engineers and
procurement professionals seeking a material that delivers
consistent performance in harsh conditions, this high
nickel-chromium alloy bright bar represents a long-term investment
in operational reliability.
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