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API 20E Steel Hex Nut
QS Fastener: API 20E Steel Hex Nut
Product: API 20E Steel Hex Nut
Dimension: 1-1/8 Inch
Material: ASTM A194 Gr.8M
Standard: API 20E
Grade: BSL 2
Surface Treatment: Teflon Coating
Dimension: 1-1/8 Inch
Material: ASTM A194 Gr.8M
Standard: API 20E
Grade: BSL 2
Surface Treatment: Teflon Coating
Quantity
API 20E Steel Hex Nut, manufactured from ASTM A194 Gr.8M high-strength alloy steel, complies with API 20E standards and BSL 2 grade requirements, making it the preferred fastening solution for harsh operating conditions in oil and gas applications. This API 20E Steel Hex Nut in 1-1/8"size features Teflon anti-corrosion coating, delivering both exceptional tensile strength (150ksi/1034MPa) and corrosion resistance, particularly suitable for offshore drilling platforms, high-pressure pipelines, and refinery equipment.
The hot forming process, central to API 20E Steel Hex Nut production, ensures extreme environment reliability through precise temperature control and dynamic recrystallization technology. Key technical details:
1. Heating Phase (1100-1150℃)
API 20E Steel Hex Nut utilizes austenitic stainless steel (e.g., 316/316L) with strictly controlled forming temperatures:
- Scientific Basis:
- >1100℃ achieves complete γ-phase transformation, dissolving grain boundary carbides per API 20E requirements
- Prevents work hardening - critical for maintaining uniform mechanical properties in API 20E Steel Hex Nut
API 20E Steel Hex Nut utilizes austenitic stainless steel (e.g., 316/316L) with strictly controlled forming temperatures:
- Scientific Basis:
- >1100℃ achieves complete γ-phase transformation, dissolving grain boundary carbides per API 20E requirements
- Prevents work hardening - critical for maintaining uniform mechanical properties in API 20E Steel Hex Nut
- Heating Equipment:
- Induction furnaces (1-10kHz) ensure thermal uniformity (±15℃ tolerance), meeting API 20E BSL 2 grade specifications
- Induction furnaces (1-10kHz) ensure thermal uniformity (±15℃ tolerance), meeting API 20E BSL 2 grade specifications
2. Hot Forging Process
API 20E Steel Hex Nut employs closed-die forging with critical parameters:
- Deformation Control:
- Total deformation 60-80%, single-stage ≤40%, preventing micro-defects prohibited by API 20E
API 20E Steel Hex Nut employs closed-die forging with critical parameters:
- Deformation Control:
- Total deformation 60-80%, single-stage ≤40%, preventing micro-defects prohibited by API 20E
- Dynamic Recrystallization Management:
- Maintains high-temperature plastic deformation to eliminate work hardening risks - the core process ensuring uniform load distribution in **API 20E Steel Hex Nut** threads
- Maintains high-temperature plastic deformation to eliminate work hardening risks - the core process ensuring uniform load distribution in **API 20E Steel Hex Nut** threads
3. Cooling Management
API 20E Steel Hex Nut implements staged cooling:
- Water quenching (>200℃/min) preserves austenite solid solution, ensuring API 20E corrosion resistance requirements
- Gradual cooling for large-size nuts prevents thermal stress from compromising API 20E Steel Hex Nut dimensional stability
API 20E Steel Hex Nut implements staged cooling:
- Water quenching (>200℃/min) preserves austenite solid solution, ensuring API 20E corrosion resistance requirements
- Gradual cooling for large-size nuts prevents thermal stress from compromising API 20E Steel Hex Nut dimensional stability
4. Process Comparison
Versus cold forming, API 20E Steel Hex Nut hot forming offers:
- 70% reduced stress concentration risk (UT-verified)
- Enhanced corrosion resistance: 10-15℃ higher Critical Pitting Temperature (CPT), exceeding API 20E BSL 2 requirements
Versus cold forming, API 20E Steel Hex Nut hot forming offers:
- 70% reduced stress concentration risk (UT-verified)
- Enhanced corrosion resistance: 10-15℃ higher Critical Pitting Temperature (CPT), exceeding API 20E BSL 2 requirements
Conclusion
As a premium fastener meeting API 6A and ASME B16.5 standards, API 20E Steel Hex Nut achieves perfect strength-corrosion resistance balance through hot forming. This process is fundamental for ensuring long-term reliability in nuclear and deep-sea applications.
As a premium fastener meeting API 6A and ASME B16.5 standards, API 20E Steel Hex Nut achieves perfect strength-corrosion resistance balance through hot forming. This process is fundamental for ensuring long-term reliability in nuclear and deep-sea applications.
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