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Alloy 59 hex nut
Name | Alloy 59 Hex Nut |
Standard | DIN934,ISO4032,ASME B18.2.2 |
Size Range | M5-M64 or non-standard as requested |
Finish | Bright&Clean |
Marking | HT&FST or customization |
Material | Alloy59,2.4605, UNS N06059 |
Grade | Grade 70, |
Certificates | EN10204-3.1B |
Non-standards | OEM is available, according to drawing or samples |
Samples | Samples available |
Package | Bulk in box and then in cartons, then on pallets, or according to customers' requirement. |
| Payment | T/T,Western Union |
Similar grades of Alloy59 alloy
| UNS | Trademark | W.Nr |
| N06059 | Alloy59 | 2.4605 |
Chemical composition of Alloy59
| Alloy | % | Ni | Cu | Fe | Mn | C | Si | S | Cr | Ai | Mo | P | Co |
| Alloy59 | Min. | Bal | 1.3 | ||||||||||
| Max. | 1.9 | 3 | 0.5 | 0.01 | 0.01 | 0.005 | 24 | 0.4 | 16.5 | 0.015 | 0.3 |
Physical properties of Alloy59
| Density | 8.6g/cm³ |
| Melting point | 1310-1360°C |
Minimum mechanical properties of Alloy59 alloy at room temperature
Tensile strength Rm Rm N/mm2 | Yield strength RP0.2 N/mm2 | Elongation rate A5 % |
| 690 | 340 | 40 |
The Alloy 59 Hex Nut is a high-performance fastener designed for extreme corrosion resistance in the most aggressive chemical environments, manufactured from Nickel-Molybdenum-Chromium Alloy 59 (UNS N06059). Engineered to ASTM B1009 and ASME SB-1009 standards, this nut offers superior resistance to pitting, crevice corrosion, and stress corrosion cracking compared to traditional nickel alloys, making it ideal for critical connections in oil refining, chemical processing, and marine engineering. The hexagonal design ensures easy tightening with standard wrenches, while the precision-machined threads provide a secure fit in high-pressure, high-temperature applications.
1. Exceptional Corrosion Resistance: Alloy 59 (62% Ni, 22% Cr, 3% Mo) outperforms other nickel alloys in nitric, acetic, and formic acids, with a corrosion rate <0.01mm/year in 20% acetic acid at 100°C (212°F). It is also immune to chloride-induced stress corrosion cracking in seawater up to 150°C (302°F).
2. High Strength and Ductility: Maintains a tensile strength of 750 MPa (108,800 PSI) and elongation of 40% at room temperature, ensuring reliable load distribution in structural and pressure vessels. The alloy’s low modulus of elasticity (200 GPa) reduces stress concentration in bolted joints.
3. Thread Standards and Finish: Available in UNC/UNF (ASME B1.1) and metric (ISO 965-1) threads with Class 2B fit, compatible with Alloy 59 bolts or stainless steel studs. The standard as-machined finish can be passivated or electropolished for enhanced surface purity.
4. Temperature Range: Performs reliably from cryogenic temperatures (-200°C/-328°F) up to 1100°C (2012°F), with oxidation resistance achieved through its high chromium content (22%).
5. Quality Control: Each nut undergoes magnetic particle inspection (MPI) for surface defects and hardness testing (HB 220-250), with material traceability provided via mill certificates (3.1A compliant).
• Oil and Gas Industry: Secures flanges in sour gas pipelines (H2S >10%), preventing stress corrosion cracking in deep-sea risers and refinery columns.
• Chemical Reactors: Used in urea production plants, where Alloy 59 resists corrosion from ammonium carbamate at 200°C (392°F) and 200 bar pressure.
• Marine Desalination: Fastens components in reverse osmosis systems exposed to brackish water and chlorine, outlasting 316L stainless steel by 3x in coastal environments.
• Pharmaceutical Equipment: Installs in API reactors and distillation columns handling strong acids, meeting cGMP standards for cleanability and material purity.
Q: How does Alloy 59 compare to Alloy C-22?
A: Alloy 59 has higher chromium (22% vs. 23%) and lower iron (1% vs. 6%), making it superior in nitric acid and less prone to sigma phase precipitation at high temperatures.
Q: Can these nuts be used with carbon steel bolts?
A: Yes, but galvanic corrosion may occur in wet environments. Use a dielectric washer (e.g., PTFE) to isolate dissimilar metals.
Q: What is the recommended torque coefficient for Alloy 59 nuts?
A: Use a torque coefficient of 0.15-0.20 for as-machined threads, adjusting for lubrication (e.g., add 10% torque for dry threads).
Q: Are there size restrictions for metric threads?
A: Standard metric sizes range from M8 to M64, with imperial sizes available from 5/16" to 2-1/2". Custom sizes up to M150 can be forged upon request.
Q: How to store Alloy 59 nuts to prevent contamination?
A: Store in clean, dry containers away from sulfur-containing materials, as hydrogen sulfide can cause intergranular corrosion over time.
Alloy 59 hex nut
Name | Alloy 59 Hex Nut |
Standard | DIN934,ISO4032,ASME B18.2.2 |
Size Range | M5-M64 or non-standard as requested |
Finish | Bright&Clean |
Marking | HT&FST or customization |
Material | Alloy59,2.4605, UNS N06059 |
Grade | Grade 70, |
Certificates | EN10204-3.1B |
Non-standards | OEM is available, according to drawing or samples |
Samples | Samples available |
Package | Bulk in box and then in cartons, then on pallets, or according to customers' requirement. |
| Payment | T/T,Western Union |
Similar grades of Alloy59 alloy
| UNS | Trademark | W.Nr |
| N06059 | Alloy59 | 2.4605 |
Chemical composition of Alloy59
| Alloy | % | Ni | Cu | Fe | Mn | C | Si | S | Cr | Ai | Mo | P | Co |
| Alloy59 | Min. | Bal | 1.3 | ||||||||||
| Max. | 1.9 | 3 | 0.5 | 0.01 | 0.01 | 0.005 | 24 | 0.4 | 16.5 | 0.015 | 0.3 |
Physical properties of Alloy59
| Density | 8.6g/cm³ |
| Melting point | 1310-1360°C |
Minimum mechanical properties of Alloy59 alloy at room temperature
Tensile strength Rm Rm N/mm2 | Yield strength RP0.2 N/mm2 | Elongation rate A5 % |
| 690 | 340 | 40 |
The Alloy 59 Hex Nut is a high-performance fastener designed for extreme corrosion resistance in the most aggressive chemical environments, manufactured from Nickel-Molybdenum-Chromium Alloy 59 (UNS N06059). Engineered to ASTM B1009 and ASME SB-1009 standards, this nut offers superior resistance to pitting, crevice corrosion, and stress corrosion cracking compared to traditional nickel alloys, making it ideal for critical connections in oil refining, chemical processing, and marine engineering. The hexagonal design ensures easy tightening with standard wrenches, while the precision-machined threads provide a secure fit in high-pressure, high-temperature applications.
1. Exceptional Corrosion Resistance: Alloy 59 (62% Ni, 22% Cr, 3% Mo) outperforms other nickel alloys in nitric, acetic, and formic acids, with a corrosion rate <0.01mm/year in 20% acetic acid at 100°C (212°F). It is also immune to chloride-induced stress corrosion cracking in seawater up to 150°C (302°F).
2. High Strength and Ductility: Maintains a tensile strength of 750 MPa (108,800 PSI) and elongation of 40% at room temperature, ensuring reliable load distribution in structural and pressure vessels. The alloy’s low modulus of elasticity (200 GPa) reduces stress concentration in bolted joints.
3. Thread Standards and Finish: Available in UNC/UNF (ASME B1.1) and metric (ISO 965-1) threads with Class 2B fit, compatible with Alloy 59 bolts or stainless steel studs. The standard as-machined finish can be passivated or electropolished for enhanced surface purity.
4. Temperature Range: Performs reliably from cryogenic temperatures (-200°C/-328°F) up to 1100°C (2012°F), with oxidation resistance achieved through its high chromium content (22%).
5. Quality Control: Each nut undergoes magnetic particle inspection (MPI) for surface defects and hardness testing (HB 220-250), with material traceability provided via mill certificates (3.1A compliant).
• Oil and Gas Industry: Secures flanges in sour gas pipelines (H2S >10%), preventing stress corrosion cracking in deep-sea risers and refinery columns.
• Chemical Reactors: Used in urea production plants, where Alloy 59 resists corrosion from ammonium carbamate at 200°C (392°F) and 200 bar pressure.
• Marine Desalination: Fastens components in reverse osmosis systems exposed to brackish water and chlorine, outlasting 316L stainless steel by 3x in coastal environments.
• Pharmaceutical Equipment: Installs in API reactors and distillation columns handling strong acids, meeting cGMP standards for cleanability and material purity.
Q: How does Alloy 59 compare to Alloy C-22?
A: Alloy 59 has higher chromium (22% vs. 23%) and lower iron (1% vs. 6%), making it superior in nitric acid and less prone to sigma phase precipitation at high temperatures.
Q: Can these nuts be used with carbon steel bolts?
A: Yes, but galvanic corrosion may occur in wet environments. Use a dielectric washer (e.g., PTFE) to isolate dissimilar metals.
Q: What is the recommended torque coefficient for Alloy 59 nuts?
A: Use a torque coefficient of 0.15-0.20 for as-machined threads, adjusting for lubrication (e.g., add 10% torque for dry threads).
Q: Are there size restrictions for metric threads?
A: Standard metric sizes range from M8 to M64, with imperial sizes available from 5/16" to 2-1/2". Custom sizes up to M150 can be forged upon request.
Q: How to store Alloy 59 nuts to prevent contamination?
A: Store in clean, dry containers away from sulfur-containing materials, as hydrogen sulfide can cause intergranular corrosion over time.
