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UNS N08825 Stud Bolt
QS Fastener: UNS N08825 Stud Bolt
Name: UNS N08825 Stud Bolt
Material: Incoloy 825, NiCr21Mo
Standard: DIN, BSW, ANSI, NF
Size: M8 to M64
Length: 1000 mm
Hardness: Max. 200 HB
Feature: Good Resistance to Stress Corrosion Cracking
Application: For Industrial Areas where the temperature does not exceed 550 degrees Celsius
Material: Incoloy 825, NiCr21Mo
Standard: DIN, BSW, ANSI, NF
Size: M8 to M64
Length: 1000 mm
Hardness: Max. 200 HB
Feature: Good Resistance to Stress Corrosion Cracking
Application: For Industrial Areas where the temperature does not exceed 550 degrees Celsius
Quantity
The UNS N08825 Stud Bolt is made from high-quality Incoloy 825 (NiCr21Mo) alloy, offering a wide size range from M8 to M64 and lengths up to 1000 mm. It complies with standards such as DIN, BSW, ANSI, and NF, with a hardness not exceeding 200 HB, ensuring excellent performance in high-temperature and corrosive environments. This bolt exhibits superior resistance to stress corrosion cracking and is suitable for industrial applications with temperatures up to 550°C, including chemical, oil, natural gas, and high-temperature equipment.
Raw material inspection is a critical step in ensuring the quality and performance of UNS N08825 Stud Bolt, primarily involving chemical composition analysis and metallographic examination. These inspections comprehensively evaluate the material's composition, microstructure, and properties, providing a reliable basis for subsequent processing and application.
1. Raw Material Inspection
Chemical Composition Analysis: Ensures the material's chemical composition meets standard requirements.
Metallographic Examination: Evaluates the material's microstructure and properties through microscopic observation.
Objective: To ensure the composition, microstructure, and properties of UNS N08825 Stud Bolt meet the required standards.
Chemical Composition Analysis: Ensures the material's chemical composition meets standard requirements.
Metallographic Examination: Evaluates the material's microstructure and properties through microscopic observation.
Objective: To ensure the composition, microstructure, and properties of UNS N08825 Stud Bolt meet the required standards.
2. Chemical Composition Analysis
Chemical composition analysis is a crucial step in assessing whether the material of UNS N08825 Stud Bolt meets standard requirements.
Chemical composition analysis is a crucial step in assessing whether the material of UNS N08825 Stud Bolt meets standard requirements.
2.1 Testing Methods
Spectroscopic Analysis:
Method: Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES)
Accuracy: ±0.01%
Spectroscopic Analysis:
Method: Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES)
Accuracy: ±0.01%
Chemical Analysis:
Method: Titration, Gravimetry
Accuracy: ±0.05%
Method: Titration, Gravimetry
Accuracy: ±0.05%
2.2 Testing Parameters
Main Elements:
Nickel (Ni): 38-46%
Chromium (Cr): 19.5-23.5%
Iron (Fe): ≥22%
Molybdenum (Mo): 2.5-3.5%
Copper (Cu): 1.5-3.0%
Titanium (Ti): 0.6-1.2%
Aluminum (Al): ≤0.2%
Carbon (C): ≤0.05%
Manganese (Mn): ≤1.0%
Silicon (Si): ≤0.5%
Sulfur (S): ≤0.03%
Phosphorus (P): ≤0.03%
Main Elements:
Nickel (Ni): 38-46%
Chromium (Cr): 19.5-23.5%
Iron (Fe): ≥22%
Molybdenum (Mo): 2.5-3.5%
Copper (Cu): 1.5-3.0%
Titanium (Ti): 0.6-1.2%
Aluminum (Al): ≤0.2%
Carbon (C): ≤0.05%
Manganese (Mn): ≤1.0%
Silicon (Si): ≤0.5%
Sulfur (S): ≤0.03%
Phosphorus (P): ≤0.03%
Trace Elements:
Cobalt (Co): ≤1.0%
Niobium (Nb): ≤0.5%
Vanadium (V): ≤0.5%
Cobalt (Co): ≤1.0%
Niobium (Nb): ≤0.5%
Vanadium (V): ≤0.5%
3. Metallographic Examination
Metallographic examination is a vital step in evaluating the microstructure and properties of UNS N08825 Stud Bolt.
Metallographic examination is a vital step in evaluating the microstructure and properties of UNS N08825 Stud Bolt.
3.1 Testing Methods
Metallographic Microscopy:
Method: Optical microscopy observation
Magnification: 100-1000x
Metallographic Microscopy:
Method: Optical microscopy observation
Magnification: 100-1000x
Scanning Electron Microscopy:
Method: Scanning electron microscopy observation
Magnification: 1000-10000x
Method: Scanning electron microscopy observation
Magnification: 1000-10000x
3.2 Testing Parameters
Grain Size:
Average Grain Size: 10-50 μm
Grain Size Grade: 5-8
Grain Size:
Average Grain Size: 10-50 μm
Grain Size Grade: 5-8
Phase Composition:
Austenite (γ): ≥95%
Carbides (M₂₃C₆): ≤5%
Austenite (γ): ≥95%
Carbides (M₂₃C₆): ≤5%
Defect Detection:
Inclusions: ≤0.5%
Porosity: ≤0.1%
Cracks: None
Inclusions: ≤0.5%
Porosity: ≤0.1%
Cracks: None
4. Impact of Inspection on Material Properties
Proper raw material inspection significantly improves the composition, microstructure, and properties of UNS N08825 Stud Bolt:
Proper raw material inspection significantly improves the composition, microstructure, and properties of UNS N08825 Stud Bolt:
4.1 Chemical Composition Analysis
Composition Uniformity: Ensures the uniformity of the chemical composition of UNS N08825 Stud Bolt.
Performance Consistency: Ensures consistent performance of UNS N08825 Stud Bolt.
Composition Uniformity: Ensures the uniformity of the chemical composition of UNS N08825 Stud Bolt.
Performance Consistency: Ensures consistent performance of UNS N08825 Stud Bolt.
4.2 Metallographic Examination
Microstructure Uniformity: Ensures the uniformity of the microstructure of UNS N08825 Stud Bolt.
Performance Stability: Ensures stable performance of UNS N08825 Stud Bolt.
Microstructure Uniformity: Ensures the uniformity of the microstructure of UNS N08825 Stud Bolt.
Performance Stability: Ensures stable performance of UNS N08825 Stud Bolt.
5. Practical Applications
Petrochemical Industry: UNS N08825 Stud Bolt has been used in high-temperature and high-pressure environments for 5 years without corrosion or failure, demonstrating excellent composition and microstructure uniformity.
Petrochemical Industry: UNS N08825 Stud Bolt has been used in high-temperature and high-pressure environments for 5 years without corrosion or failure, demonstrating excellent composition and microstructure uniformity.
Nuclear Industry: UNS N08825 Stud Bolt has been used in high-temperature environments for 10 years without corrosion or failure, demonstrating excellent composition and microstructure uniformity.
Aerospace Industry: UNS N08825 Stud Bolt has been used in high-temperature environments for 5 years without corrosion or failure, demonstrating excellent composition and microstructure uniformity.
6. Summary
Raw material inspection (chemical composition analysis and metallographic examination) of UNS N08825 Stud Bolt is a critical step in ensuring its composition, microstructure, and properties. By controlling testing methods and parameters, the composition uniformity, microstructure uniformity, and performance stability of UNS N08825 Stud Bolt can be significantly improved. In practical applications, UNS N08825 Stud Bolt has demonstrated excellent composition and microstructure uniformity, making it an ideal material for industries such as petrochemicals, nuclear energy, and aerospace.
Raw material inspection (chemical composition analysis and metallographic examination) of UNS N08825 Stud Bolt is a critical step in ensuring its composition, microstructure, and properties. By controlling testing methods and parameters, the composition uniformity, microstructure uniformity, and performance stability of UNS N08825 Stud Bolt can be significantly improved. In practical applications, UNS N08825 Stud Bolt has demonstrated excellent composition and microstructure uniformity, making it an ideal material for industries such as petrochemicals, nuclear energy, and aerospace.
When selecting fasteners for demanding industrial applications, the UNS N08825 Stud Bolt stands out as a reliable choice, offering exceptional performance under the most challenging conditions.
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