DIN W.Nr.1.4539 Bolt and Nut
QS Fastener: DIN W.Nr.1.4539 Bolt and Nut
Name: DIN W.Nr.1.4539 Bolt and Nut
Material: SS 904L
Size: M6 to M100
Product Grade: A
Standard: ANSI, DIN
Tensile Strength(Rm): 490 N/mm²
Elongation: 35%
Feature: High Resistance to Pitting and Stress Corrosion Cracking
Application: For Petroleum and Petrochemical Equipment, etc.
Material: SS 904L
Size: M6 to M100
Product Grade: A
Standard: ANSI, DIN
Tensile Strength(Rm): 490 N/mm²
Elongation: 35%
Feature: High Resistance to Pitting and Stress Corrosion Cracking
Application: For Petroleum and Petrochemical Equipment, etc.
Quantity
The DIN W.Nr.1.4539 Bolt and Nut is manufactured from high-quality SS 904L stainless steel, with specifications ranging from M6 to M100, compliant with ANSI and DIN standards, and classified as Grade A. Its high nickel (23-28%) and molybdenum (4-5%) content endow it with exceptional resistance to pitting and stress corrosion cracking, making it particularly suitable for highly corrosive environments such as petrochemical and marine engineering. With a tensile strength of 490 N/mm² and an elongation rate of up to 35%, it ensures high strength and toughness even under demanding conditions. Whether in sulfuric acid, phosphoric acid, or chloride media, the DIN W.Nr.1.4539 Bolt and Nut delivers reliable performance, making it an ideal choice for industries such as petrochemicals and pharmaceuticals, ensuring the safety and long-term economic efficiency of your equipment.
Thanks to its unique austenitic structure, the DIN W.Nr.1.4539 Bolt and Nut exhibits excellent processing performance, especially for manufacturing complex-shaped fasteners. Below is a detailed analysis of its cold working and welding properties:
1. Cold Working Performance
The austenitic structure is the core characteristic of the DIN W.Nr.1.4539 Bolt and Nut, which remains stable at room temperature, providing the material with outstanding cold working performance. Specific features include:
The austenitic structure is the core characteristic of the DIN W.Nr.1.4539 Bolt and Nut, which remains stable at room temperature, providing the material with outstanding cold working performance. Specific features include:
- High Ductility: The DIN W.Nr.1.4539 Bolt and Nut has an elongation rate of up to 35%, meaning it can withstand significant plastic deformation during cold working without cracking. This high ductility allows it to be formed into complex-shaped fasteners, such as special bolts and nuts, through processes like cold rolling, cold drawing, and cold heading.
- Moderate Work Hardening Rate: The DIN W.Nr.1.4539 Bolt and Nut gradually hardens during cold working, but its work hardening rate is moderate, unlike some high-strength materials that become too hard to process quickly. This characteristic ensures good workability even after multiple forming processes.
- High Dimensional Accuracy: Due to the stability of the austenitic structure, the DIN W.Nr.1.4539 Bolt and Nut maintains precise dimensions during cold working, meeting the requirements for high-precision fasteners. For example, the diameter tolerance of precision bolts can be controlled within ±0.01 mm.
- Excellent Surface Quality: After cold working, the DIN W.Nr.1.4539 Bolt and Nut has a smooth surface, achieving a high surface finish (Ra ≤ 0.8 μm) without additional polishing, which is crucial for fasteners requiring superior surface quality.
2. Welding Performance
The DIN W.Nr.1.4539 Bolt and Nut also exhibits excellent welding performance, suitable for various welding methods, and maintains its properties without post-weld heat treatment. Specific features include:
The DIN W.Nr.1.4539 Bolt and Nut also exhibits excellent welding performance, suitable for various welding methods, and maintains its properties without post-weld heat treatment. Specific features include:
- Compatibility with Multiple Welding Methods: The DIN W.Nr.1.4539 Bolt and Nut can be welded using TIG (Tungsten Inert Gas Welding), MIG (Metal Inert Gas Welding), and manual arc welding. Among these, TIG welding is particularly suitable for precision fasteners due to its low heat input and high weld quality.
- Low Carbon Content Reduces Intergranular Corrosion Risk: The DIN W.Nr.1.4539 Bolt and Nut has an extremely low carbon content (≤0.02%), preventing the formation of excessive carbide precipitation during welding and thus avoiding intergranular corrosion in the heat-affected zone. This ensures the corrosion resistance and mechanical properties of the weld joint.
- No Post-Weld Heat Treatment Required: Due to the stability of the austenitic structure, the DIN W.Nr.1.4539 Bolt and Nut maintains its properties without post-weld heat treatment, simplifying the manufacturing process and reducing costs.
- Excellent Weld Performance: The weld zone of the DIN W.Nr.1.4539 Bolt and Nut exhibits mechanical properties and corrosion resistance similar to the base material. For example, the tensile strength of the weld can reach ≥490 MPa, with an elongation rate of ≥30%, fully meeting the requirements for high-strength fasteners.
3. Practical Application Advantages
The processing performance advantages of the DIN W.Nr.1.4539 Bolt and Nut are particularly evident in the manufacturing of complex-shaped fasteners:
The processing performance advantages of the DIN W.Nr.1.4539 Bolt and Nut are particularly evident in the manufacturing of complex-shaped fasteners:
- Complex Shape Forming: For example, when manufacturing special bolts, the DIN W.Nr.1.4539 Bolt and Nut can be formed into complex head shapes (such as hex heads or internal hex heads) through cold heading in a single process, eliminating the need for multiple operations.
- High Precision Requirements: When manufacturing precision nuts, the DIN W.Nr.1.4539 Bolt and Nut can achieve high-precision thread fits through cold working and welding processes, ensuring fastener reliability and durability.
- Corrosion Resistance: The high nickel (23-28%) and molybdenum (3-4%) content of the DIN W.Nr.1.4539 Bolt and Nut ensures excellent corrosion resistance even after welding and cold working, making it particularly suitable for harsh environments such as petrochemicals and marine engineering.
In summary, the DIN W.Nr.1.4539 Bolt and Nut, with its austenitic structure, offers exceptional cold working and welding performance, making it an ideal material for manufacturing complex-shaped, high-precision, and high-performance fasteners. It is widely used in industries such as petrochemicals, marine engineering, and nuclear power.
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