| 17-4PH Stainless Steel Valve Seats | ||
| 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 Seat accuracy | ≤ 0.025 mm | ≤ 0.005 mm (Ultra-High Precision) |
| Processing Seat Roundness | ≤ 0.025 mm | ≤ 0.011 mm (Micron-Level ) |
| 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 |
Material Science and Precision Manufacturing Designed for Extreme Conditions
Engineerable Superior Performance
The appeal of 17-4PH valve Seats lies in their designable properties. Through precisely controlled aging heat treatment processes, we can tailor the seat hardness to an ideal range (often up to HRC 40 or above) that meets specific application demands. This grants them exceptional resistance to crushing, deformation, and outstanding wear performance, making them an ideal upgrade over traditional soft-seat or low-hardness metal seats.
A Stable Foundation for High-Temperature & High-Pressure Service
In applications requiring High temperature high pressure valve seats, a material's strength retention and creep resistance are paramount. Unlike some materials that soften at high temperatures, properly heat-treated 17-4PH maintains robust mechanical properties within moderate to high temperature ranges. This ensures that whether as standalone Stainless Steel valve Seats components or as integral Stainless Steel valve body seats (SS valve body seat), they deliver enduring and stable sealing under demanding thermal-mechanical conditions.
The Reliability of an All-Metal Solution
In applications where non-metallic materials (e.g., PTFE) are prohibited or where media compatibility is a concern, our 17-4PH Stainless Steel Valve Seats offer a pure metal-to-metal sealing solution. This all-metal construction avoids issues associated with non-metallics, such as cold flow, aging, or chemical attack, making it particularly suitable for ultra-pure media, certain chemical processes, and high-parameter steam systems.
Why Choose Our 17-4PH Hardened Stainless Steel Valve Seats?
Optimized Balance of Performance and Cost
Compared to more expensive nickel-based alloys, 17-4PH offers a highly cost-effective solution for achieving high strength and hardness in moderately corrosive environments.
Customized Heat Treatment Service
We can recommend and provide the optimal heat treatment condition (e.g., H900, H1025, H1150) based on your specific operating conditions (pressure, temperature, wear type), ensuring the seat performance is perfectly matched to the service requirements.
Excellent Combination of Mechanical Properties
High strength is coupled with good toughness, allowing the seats to withstand certain impact loads and mitigating the risk of brittle fracture common in some very hard materials.
Proven in Diverse Industry Applications
Our 17-4PH valve Seats have been successfully applied in oil & gas wellhead equipment, power plant valves, high-pressure pumps, and various heavy-duty industrial valves requiring long life and minimal maintenance.
When wear, high pressure, and temperature are the primary threats to valve service life, enhancing the inherent strength of critical sealing components is a fundamental solution. TongBall's 17-4PH Hardened Stainless Steel Valve Seats are designed precisely to provide the core strength that empowers your valves to withstand such rigorous tests.
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