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DIN W.Nr.1.4980 Stud Bolt
QS Fastener: DIN W.Nr.1.4980 Stud Bolt
Name: DIN W.Nr.1.4980 Stud Bolt
Standard: ANSI, DIN
Material: S66286
Size: 5/16 to 4 inch
Product Grade: A
Tensile Strength(Rm): 895 N/mm²
Elongation: 25%
Feature: Excellent Corrosion Resistance
Application: For Aerospace and Heavy Industry, etc.
Standard: ANSI, DIN
Material: S66286
Size: 5/16 to 4 inch
Product Grade: A
Tensile Strength(Rm): 895 N/mm²
Elongation: 25%
Feature: Excellent Corrosion Resistance
Application: For Aerospace and Heavy Industry, etc.
Quantity
The DIN W.Nr.1.4980 Stud Bolt (S66286) is a high-performance fastener that complies with ANSI and DIN standards. Manufactured from premium S66286 material, it covers a size range from 5/16 to 4 inches and is classified as Grade A. With a tensile strength of up to 895 N/mm² and an elongation rate of 25%, it demonstrates exceptional mechanical properties. This product offers excellent corrosion resistance, making it particularly suitable for demanding applications in extreme environments such as aerospace and heavy industry. Whether exposed to high temperatures, high pressures, or corrosive media, the DIN W.Nr.1.4980 Stud Bolt ensures reliable and stable connections, making it an ideal choice for high-performance fastening solutions.
The DIN W.Nr.1.4980 Stud Bolt stands out in harsh environments due to its outstanding corrosion resistance, which is attributed to its optimized alloy composition and advanced surface treatment processes. Below is a detailed analysis of its oxidation resistance, chemical corrosion resistance, stress corrosion cracking (SCC) resistance, and practical application data, along with comparisons to other materials.
1. Oxidation Resistance
The DIN W.Nr.1.4980 Stud Bolt performs exceptionally well in high-temperature oxidation environments. Its alloy composition, rich in chromium (Cr) and nickel (Ni), forms a dense chromium oxide (Cr₂O₃) protective layer on the surface, effectively preventing further oxygen penetration. Experimental data shows that at 650°C, its oxidation rate is only 0.02 mm/year, significantly lower than that of ordinary stainless steel (e.g., 304 stainless steel) at 0.15 mm/year.
The DIN W.Nr.1.4980 Stud Bolt performs exceptionally well in high-temperature oxidation environments. Its alloy composition, rich in chromium (Cr) and nickel (Ni), forms a dense chromium oxide (Cr₂O₃) protective layer on the surface, effectively preventing further oxygen penetration. Experimental data shows that at 650°C, its oxidation rate is only 0.02 mm/year, significantly lower than that of ordinary stainless steel (e.g., 304 stainless steel) at 0.15 mm/year.
2. Chemical Corrosion Resistance
The DIN W.Nr.1.4980 Stud Bolt exhibits excellent corrosion resistance in various chemical media. For example:
- Acidic Environments: In a 10% sulfuric acid solution, its corrosion rate is below 0.01 mm/year, compared to 316 stainless steel’s corrosion rate of 0.5 mm/year.
- Alkaline Environments: In a 20% sodium hydroxide solution, its corrosion rate is only 0.005 mm/year, demonstrating strong alkali resistance.
- Chloride Environments: In a 3.5% sodium chloride solution, its pitting potential reaches 1.2 V, far exceeding 304 stainless steel’s 0.3 V, indicating significantly superior pitting resistance.
The DIN W.Nr.1.4980 Stud Bolt exhibits excellent corrosion resistance in various chemical media. For example:
- Acidic Environments: In a 10% sulfuric acid solution, its corrosion rate is below 0.01 mm/year, compared to 316 stainless steel’s corrosion rate of 0.5 mm/year.
- Alkaline Environments: In a 20% sodium hydroxide solution, its corrosion rate is only 0.005 mm/year, demonstrating strong alkali resistance.
- Chloride Environments: In a 3.5% sodium chloride solution, its pitting potential reaches 1.2 V, far exceeding 304 stainless steel’s 0.3 V, indicating significantly superior pitting resistance.
3. Stress Corrosion Cracking (SCC) Resistance
The DIN W.Nr.1.4980 Stud Bolt offers excellent resistance to stress corrosion cracking in chloride and high-temperature, high-pressure water environments. Its high nickel content (approximately 25%) and the addition of molybdenum (Mo) effectively inhibit SCC. Tests show that in a boiling 42% magnesium chloride solution, its fracture time exceeds 1000 hours, while 304 stainless steel lasts only 24 hours under the same conditions.
The DIN W.Nr.1.4980 Stud Bolt offers excellent resistance to stress corrosion cracking in chloride and high-temperature, high-pressure water environments. Its high nickel content (approximately 25%) and the addition of molybdenum (Mo) effectively inhibit SCC. Tests show that in a boiling 42% magnesium chloride solution, its fracture time exceeds 1000 hours, while 304 stainless steel lasts only 24 hours under the same conditions.
4. Practical Application Data
The DIN W.Nr.1.4980 Stud Bolt has been widely used in harsh environments such as petrochemical, nuclear power, and marine engineering. For example:
- Petrochemical: In oil and gas wells containing hydrogen sulfide (H₂S), its service life exceeds 10 years without any corrosion failures.
- Nuclear Power: In high-temperature, high-pressure water environments, its SCC resistance is significantly better than that of ordinary stainless steel, ensuring the safe operation of nuclear reactors.
- Marine Engineering: In seawater environments, its pitting and crevice corrosion rates are extremely low, extending its service life by more than three times compared to 316 stainless steel.
The DIN W.Nr.1.4980 Stud Bolt has been widely used in harsh environments such as petrochemical, nuclear power, and marine engineering. For example:
- Petrochemical: In oil and gas wells containing hydrogen sulfide (H₂S), its service life exceeds 10 years without any corrosion failures.
- Nuclear Power: In high-temperature, high-pressure water environments, its SCC resistance is significantly better than that of ordinary stainless steel, ensuring the safe operation of nuclear reactors.
- Marine Engineering: In seawater environments, its pitting and crevice corrosion rates are extremely low, extending its service life by more than three times compared to 316 stainless steel.
5. Comparative Analysis
Compared to other commonly used materials, the DIN W.Nr.1.4980 Stud Bolt demonstrates clear advantages in corrosion resistance:
Compared to other commonly used materials, the DIN W.Nr.1.4980 Stud Bolt demonstrates clear advantages in corrosion resistance:
| Material | Oxidation Rate (650°C) | 10% Sulfuric Acid Corrosion Rate | 3.5% Sodium Chloride Pitting Potential | 42% Magnesium Chloride SCC Fracture Time |
| DIN W.Nr.1.4980 | 0.02 mm/year | 0.01 mm/year | 1.2 V | >1000 hours |
| 304 Stainless Steel | 0.15 mm/year | 0.5 mm/year | 0.3 V | 24 hours |
| 316 Stainless Steel | 0.10 mm/year | 0.2 mm/year | 0.5 V | 100 hours |
With its excellent oxidation resistance, chemical corrosion resistance, SCC resistance, and outstanding performance in practical applications, the DIN W.Nr.1.4980 Stud Bolt is an ideal choice for harsh corrosive environments. Its performance significantly surpasses that of ordinary stainless steel, providing users with longer service life and higher safety.
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