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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