| Hastelloy Valve Balls | ||
| Size Range | 1/2" to 56" (Custom sizes available) | |
| Pressure Rating | PN10-PN420 (Class150-2500) | |
| Body Material | A105, A350 LF2, A182 F304, A182 F316, A182 F321, A182 F51, A182 F53, A182 F55, A182 F60, A182 F44, A564 630 (17-4PH) INCONEL625, INCONEL718, INCONEL825, Monel 400, Monel 500 etc |
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| Core Process/Coating | ENP,HCR,STL6, STL12, STL20,Cr3C2, WC-Co, WC-Cr3C2-Ni, TiC-NiMo, SiC, CrC,ZrO2, Al2O3, Cr2O3, ZnO, TiO, Al2O3-TiO2,STL1, STL6, STL12,Ni60, Ni55, Ni45 etc. | |
| Operating Temperature Range | ≤1200°C | |
| Parameter Category | Core Technical Parameters | Standards for Determining Advanced Technological Level |
| Machining ball accuracy | ≤ 0.025 mm | ≤ 0.005 mm (Ultra-High Precision) |
| Processing ball Roundness | ≤ 0.025 mm | ≤ 0.011 mm (Micron-Level ) |
| Balls concentricity | ≤ 0.025 mm | ≤ 0.005 mm (Ultra-High Precision) |
| Other supplements | ≤ 0.4 μm | ≤ 0.1 μm (Mirror-Level) |
| Parameter Category | Core Technical Parameters | Criteria for High-End Technical Level |
| Coating Thickness Control | Thickness Uniformity | Thickness deviation at any spherical position ≤±8% (stricter than the general ±10% standard) |
| Thickness Tolerance Range | 100 - 300 μm (common range for wear-resistant layers); special ranges can be noted. No missed spraying for ultra-thin coatings (<10μm) | |
| Coating Adhesion Performance | Surface Hardness | HV 1300+ |
| Bond StrengthBond Strength | ≥80 MPa | |
| Interface PorosityInterface Porosity | <0.5% | |
| Coating Surface Quality | Surface Roughness (Ra) | ≤0.2 µm |
| Spraying Accuracy (Positioning & Coverage) | Spraying Positioning Accuracy | ±0.1mm |
Core Product: Born for "Impossible" Corrosive Environments
Hastelloy is not a single material but a family of nickel-based alloys targeting different kingdoms of corrosion. We specialize in manufacturing valve balls from two of its most widely used and performance-celebrated star materials.
C-276 valve balls are the benchmark for resisting strong oxidizing and moderately reducing corrosion. They offer exceptional resistance to chloride stress corrosion cracking, pitting, crevice corrosion, and a wide range of strong acids like sulfuric, hydrochloric, and phosphoric acids. As a proven material for Solid valve Balls, C-276 provides unparalleled reliability and long life in extreme environments such as flue gas desulfurization, chemical reactors, and waste acid recovery.
Hastelloy C-22: The More Balanced All-Round Champion
C-22 valve balls are a further optimization based on C-276. Their balanced formulation of chromium, molybdenum, and tungsten provides a broader window of corrosion resistance. They perform exceptionally well, particularly against mixed acids, oxidizing salts, and localized corrosion, with significantly improved corrosion resistance in weld heat-affected zones. Choosing C-22 means reserving the widest safety margin for unpredictable complex chemical media or hard-to-maintain scenarios like deep-sea applications.
Beyond exceptional corrosion resistance, Hastelloy alloys maintain excellent toughness and strength at low temperatures. This makes our Hastelloy valve balls naturally suitable for Cryogenic valve balls applications. Whether in liquefied natural gas (LNG), liquid nitrogen, liquid oxygen transfer and storage systems, or aerospace cryogenic propellant lines, Hastelloy balls ensure no brittle transition occurs and sealing performance remains stable at -196°C or even lower.
In-Depth Protection Against Mixed Acids & Localized Corrosion
The root cause of many process failures is not uniform corrosion but pitting, crevice corrosion, or stress corrosion cracking. The high molybdenum and chromium content of Hastelloy, especially the addition of tungsten in C-22, gives it an extremely high resistance to localized corrosion (PREN value). The homogeneous and dense microstructure of our Corrosion Resistant valve balls effectively prevents corrosion from initiating and propagating at grain boundaries or defects.
Technical Focus: Precision Processing of the "Corrosion King"
Special Strategies for Work Hardening:
Hastelloy is notoriously difficult to machine. We employ very low cutting speeds, dedicated tool geometries, and high-pressure coolant to minimize work hardening and cutting heat, ensuring that C-22 valve balls and C-276 valve balls are formed without damaging their inherent corrosion-resistant microstructure.
Performance Assurance Post-Welding & Heat Treatment:
We deeply understand the sensitivity of Hastelloy alloys to heat treatment cycles. For balls that may require welding to stems, we provide products that have undergone solution annealing to ensure post-weld corrosion resistance, along with professional welding guidance.
Surface Passivation & Cleaning:
After machining, we perform strict pickling and passivation treatments to thoroughly remove contaminants like free iron and form a complete, uniform chromium-rich passive oxide film on the ball surface-the final critical step for achieving its theoretical corrosion resistance.
Why Choose TongBall for the Ultimate Corrosion Challenge?
Hastelloy Application Authority:
We not only supply Hastelloy balls but can also provide the most precise recommendations between grades like C-276 and C-22 based on a rich database of media cases, avoiding over-engineering or under-specification.
Dual Competence Bridging "Cryogenic" and "Severe Corrosion"： Our Hastelloy valve balls are among the few material solutions that simultaneously meet the dual standards of extreme corrosion and extreme low temperatures, simplifying your supply chain and enhancing system consistency.
Experts in Mastering Difficult-to-Machine Materials:
We translate the know-how of machining Hastelloy into stable, precision manufacturing capabilities, ensuring every Hastelloy ball delivered possesses the geometric accuracy and surface integrity essential for a core sealing component.
Facing non-negotiable corrosion and temperature demands requires an equally non-negotiable material partner.
Whether it's the classic reliability of C-276 valve balls, the comprehensive protection of C-22 valve balls, or their shared potential as Cryogenic valve balls, TongBall is prepared with complete capabilities from material certification to precision-finished products. Let us jointly define the corrosion boundaries of your project.
You are welcome to submit your media analysis report and operating parameters to receive a valve ball technical evaluation and selection proposal based on Hastelloy alloys.
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