| Material: | Stainless Steel |
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| Type: | Hexagon Head |
| Connection: | Common Bolt |
| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier XIAMEN QISHINE
XIAMEN QISHINE IMP. & EXP. Co., Ltd., is a globally recognized and renowned pipeline product supplier specializing in the provision of a wide array of pipeline essentials, from fasteners to gaskets. 
We take pride in catering to a broad range of clientele across various industries and projects worldwide, with a strategic focus on Engineering, Procurement, and Construction (EPC) companies and pipeline construction projects.
We have more than ten years of pipeline product development & sales experience, so we have a wealth of relevant experience and problem solving ability.
Introducing the Alloy 31 Nut, which is made from the high-performing Alloy 31 material. This nut is designed to meet the specific demands of the chemistry and petrochemical industries, offering exceptional corrosion resistance and durability. With its outstanding properties, the Alloy 31 Nut is the ultimate choice for applications that require a reliable and long-lasting fastening solution.
The Alloy 31 Nut is crafted from a unique alloy composition comprising primarily of nitrogenous nickel, chromium, and molybdenum. This combination of elements provides exceptional corrosion resistance, making the nut highly suitable for applications in harsh chemical environments where exposure to acids, chlorides, and other corrosive media is inevitable.
Similar brand
| UNS | GB/T | W.Nr | ANSI/ASTM |
| N08031 | NS144 | 1.4562 | Alloy31 |
Manufactured according to the UNS N08031 standard, the Alloy 31 Nut is produced with precision and adherence to international quality standards. Available in a wide range of sizes, from M8 to M100, this nut can cater to various fastening requirements.
The Alloy 31 Nut has a performance class of 8.8, indicating its excellent mechanical properties. With a strength of extension reaching 650 N/mm², this nut possesses a high level of tensile strength, ensuring reliable and secure fastening even under heavy loads. Its exceptional strength enables it to withstand the demanding conditions found in the chemistry and petrochemical industries.
Chemical composition of Alloy 31 Nut
| alloy | % | Ni | Cr | Fe | C | Mo | Mn | Si | Cu | P | S | N |
| 31 | Min | 30.0 | 26 | REM | - | 6 | - | - | 1.0 | 0.15 | ||
| Max | 32.0 | 28 | 0.015 | 7 | 2.0 | 0.30 | 1.4 | 0.02 | 0.01 | 0.20 |
One of the key features of the Alloy 31 Nut is its remarkable corrosion resistance. This nut is specifically engineered to resist corrosion against a wide range of aggressive chemicals, including sulfuric acid, hydrochloric acid, phosphoric acid, and seawater, among others. Its resistance to localized corrosion, such as pitting and crevice corrosion, further enhances its suitability for challenging environments.
Minimum mechanical properties of bolts at room temperature
| Condition | Rm N/mm² |
RP0.2 N/mm² |
A5 % |
| Mechanical Properties | 650 | 350 | 35 |
In addition to its impressive corrosion resistance, the Alloy 31 Nut offers excellent structural stability. It maintains its strength and integrity even at high temperatures, making it suitable for applications that involve elevated operating conditions. The nut exhibits minimal deformation and retains its mechanical properties over a wide temperature range, ensuring the long-term reliability of the fastening system.
The Alloy 31 Nut is designed with precision and attention to detail. Its fine threading ensures a secure and tight fit, preventing loosening or failure under dynamic or vibrational loads. The nut's smooth surface finish allows for easy installation and removal when necessary, saving time and effort during maintenance or repairs.
The Alloy 31 Nut finds extensive application in the chemistry and petrochemical industries, where maintaining the integrity and reliability of fasteners is crucial. It is commonly used in equipment such as reactors, heat exchangers, pumps, valves, and piping systems. By choosing the Alloy 31 Nut, professionals in these industries can ensure the safety and efficiency of their operations, as well as reduce the risk of equipment failure and costly downtime.
To summarize, the Alloy 31 Nut is a nitrogenous nickel-chromium-molybdenum nut that offers exceptional corrosion resistance, high tensile strength, and excellent structural stability. Its ability to withstand harsh chemical environments and elevated temperatures makes it an ideal choice for applications in the chemistry and petrochemical sectors. With its outstanding properties and adherence to international standards, the Alloy 31 Nut is a reliable and durable fastening solution for critical industrial applications.
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