Recommend Products
Name: Fujian Monel 400 Double End Stud Material: Monel 400 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: Resistant to hydrofluoric acidQS Fastener: Monel 400 Double End Stud
Name: Inconel 625 Double End Stud Material: Inconel 625 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 625 Double End Stud
Name: Xiamen Inconel 600 High Strength Fastener Material: Inconel 600 Standard: ASME Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 600 High Strength Fastener
Name: Inconel 600 Stud Bolt Putian Material: Inconel 600 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 600 Stud Bolt
W.Nr.1.4980 Stud Bolt
QS Fastener: W.Nr.1.4980 Stud Bolt
Name: W.Nr.1.4980 Stud Bolt
Standard: UNS S66286, DIN W.Nr.1.4980
Material: A453 Gr 660B
Feature: Excellent Corrosion Resistance
Size: M45
Hardness: 248 HB
Length: 590 mm
Application: For Aerospace and Heavy Industry
Standard: UNS S66286, DIN W.Nr.1.4980
Material: A453 Gr 660B
Feature: Excellent Corrosion Resistance
Size: M45
Hardness: 248 HB
Length: 590 mm
Application: For Aerospace and Heavy Industry
Quantity
The W.Nr.1.4980 Stud Bolt is manufactured from high-performance material A453 Gr 660B, compliant with UNS S66286 and DIN W.Nr.1.4980 standards. With a specification of M45 and a length of 590 mm, it has a hardness not exceeding 248 HB and exhibits exceptional corrosion resistance. Designed specifically for the aerospace and heavy industry sectors, the W.Nr.1.4980 Stud Bolt maintains stability and reliability in extreme environments. Thanks to its superior material properties and precise manufacturing processes, the W.Nr.1.4980 Stud Bolt is an ideal choice for demanding applications, ensuring efficient operation of equipment under harsh conditions.
Corrosion Resistance of W.Nr.1.4980 Stud Bolt
The W.Nr.1.4980 Stud Bolt demonstrates outstanding corrosion resistance in various severe environments due to its optimized alloy composition and advanced surface treatment processes. Below, its performance advantages are detailed in terms of oxidation resistance, chemical corrosion resistance, stress corrosion cracking (SCC) resistance, and practical applications, along with comparative analysis.
The W.Nr.1.4980 Stud Bolt demonstrates outstanding corrosion resistance in various severe environments due to its optimized alloy composition and advanced surface treatment processes. Below, its performance advantages are detailed in terms of oxidation resistance, chemical corrosion resistance, stress corrosion cracking (SCC) resistance, and practical applications, along with comparative analysis.
Material Composition and Corrosion Protection Mechanism
The key alloying elements of the W.Nr.1.4980 Stud Bolt include chromium (Cr, 19-21%), molybdenum (Mo, 1.5-2.0%), and nickel (Ni, balance). Chromium forms a dense Cr₂O₃ oxide film at high temperatures or in corrosive environments, effectively isolating the base material from the corrosive medium. Molybdenum significantly enhances resistance to pitting and crevice corrosion, especially in chloride-containing environments. Nickel provides a stable austenitic matrix, reducing susceptibility to intergranular corrosion. Additionally, surface treatment processes such as electrolytic polishing and high-temperature passivation control surface roughness to Ra≤0.8μm and form a Cr₂O₃ film with a thickness of 50-80nm, further enhancing long-term protection.
The key alloying elements of the W.Nr.1.4980 Stud Bolt include chromium (Cr, 19-21%), molybdenum (Mo, 1.5-2.0%), and nickel (Ni, balance). Chromium forms a dense Cr₂O₃ oxide film at high temperatures or in corrosive environments, effectively isolating the base material from the corrosive medium. Molybdenum significantly enhances resistance to pitting and crevice corrosion, especially in chloride-containing environments. Nickel provides a stable austenitic matrix, reducing susceptibility to intergranular corrosion. Additionally, surface treatment processes such as electrolytic polishing and high-temperature passivation control surface roughness to Ra≤0.8μm and form a Cr₂O₃ film with a thickness of 50-80nm, further enhancing long-term protection.
Oxidation Resistance
In high-temperature oxidizing environments, the W.Nr.1.4980 Stud Bolt exhibits excellent oxidation resistance. According to ASTM G54 standard tests, after 1000 hours of exposure to air at 700°C, its oxidation rate is only ≤0.05 mg/cm²·h, far superior to 304 stainless steel's 0.15 mg/cm²·h. The oxide film structure consists of a continuous and dense Cr₂O₃ layer, 2-3μm thick, with no peeling observed. In practical applications, such as in gas turbine combustion chambers and petrochemical cracking furnaces, the W.Nr.1.4980 Stud Bolt demonstrates extremely low oxidation and corrosion rates in high-temperature combustion gases and sulfur-containing flue gases, ensuring long-term stable operation of equipment.
In high-temperature oxidizing environments, the W.Nr.1.4980 Stud Bolt exhibits excellent oxidation resistance. According to ASTM G54 standard tests, after 1000 hours of exposure to air at 700°C, its oxidation rate is only ≤0.05 mg/cm²·h, far superior to 304 stainless steel's 0.15 mg/cm²·h. The oxide film structure consists of a continuous and dense Cr₂O₃ layer, 2-3μm thick, with no peeling observed. In practical applications, such as in gas turbine combustion chambers and petrochemical cracking furnaces, the W.Nr.1.4980 Stud Bolt demonstrates extremely low oxidation and corrosion rates in high-temperature combustion gases and sulfur-containing flue gases, ensuring long-term stable operation of equipment.
Chemical Corrosion Resistance
In acidic environments, the W.Nr.1.4980 Stud Bolt shows significantly better corrosion resistance than ordinary stainless steel. For example, in 10% sulfuric acid at 50°C, its corrosion rate is only 0.02 mm/year, compared to 304 stainless steel's 1.2 mm/year. In 5% hydrochloric acid at 30°C, its corrosion rate is 0.08 mm/year, much lower than 304 stainless steel's 12.5 mm/year. Additionally, in 65% nitric acid at 25°C, its corrosion rate is only 0.005 mm/year, demonstrating excellent resistance to strong acids. In alkaline environments, such as 30% NaOH solution at 80°C, its corrosion rate is ≤0.01 mm/year, making it suitable for alkali pipeline connections. In seawater environments, its pitting potential is ≥1.0V (SCE), outperforming duplex stainless steel 2205 in pitting resistance.
In acidic environments, the W.Nr.1.4980 Stud Bolt shows significantly better corrosion resistance than ordinary stainless steel. For example, in 10% sulfuric acid at 50°C, its corrosion rate is only 0.02 mm/year, compared to 304 stainless steel's 1.2 mm/year. In 5% hydrochloric acid at 30°C, its corrosion rate is 0.08 mm/year, much lower than 304 stainless steel's 12.5 mm/year. Additionally, in 65% nitric acid at 25°C, its corrosion rate is only 0.005 mm/year, demonstrating excellent resistance to strong acids. In alkaline environments, such as 30% NaOH solution at 80°C, its corrosion rate is ≤0.01 mm/year, making it suitable for alkali pipeline connections. In seawater environments, its pitting potential is ≥1.0V (SCE), outperforming duplex stainless steel 2205 in pitting resistance.
Stress Corrosion Cracking Resistance
According to NACE TM0177 standard tests, the W.Nr.1.4980 Stud Bolt exhibits excellent resistance to stress corrosion cracking in hydrogen sulfide environments. In a harsh solution of 25% NaCl + 0.5% CH₃COOH + saturated H₂S (pH=2.7), no SCC failure occurred after 720 hours of testing, whereas 316 stainless steel developed cracks within 48 hours under the same conditions. In practical cases, such as in offshore oil platforms with H₂S (200ppm) and chloride ions in humid environments, the W.Nr.1.4980 Stud Bolt has shown no cracking reports after 5 years of use, fully validating its reliability.
According to NACE TM0177 standard tests, the W.Nr.1.4980 Stud Bolt exhibits excellent resistance to stress corrosion cracking in hydrogen sulfide environments. In a harsh solution of 25% NaCl + 0.5% CH₃COOH + saturated H₂S (pH=2.7), no SCC failure occurred after 720 hours of testing, whereas 316 stainless steel developed cracks within 48 hours under the same conditions. In practical cases, such as in offshore oil platforms with H₂S (200ppm) and chloride ions in humid environments, the W.Nr.1.4980 Stud Bolt has shown no cracking reports after 5 years of use, fully validating its reliability.
Comparative Analysis and Advantages Summary
Compared to 304 stainless steel and Inconel 625, the W.Nr.1.4980 Stud Bolt demonstrates superior corrosion resistance in high-temperature oxidation, chemical corrosion, and stress corrosion environments. Its oxidation rate, hydrochloric acid corrosion rate, and stress corrosion cracking resistance outperform 304 stainless steel and approach those of the high-cost nickel-based alloy Inconel 625. Its core advantages include:
1. Broad Corrosion Resistance: Excellent performance in environments ranging from strong acids to high chloride ion concentrations, covering over 90% of industrial corrosion scenarios.
Compared to 304 stainless steel and Inconel 625, the W.Nr.1.4980 Stud Bolt demonstrates superior corrosion resistance in high-temperature oxidation, chemical corrosion, and stress corrosion environments. Its oxidation rate, hydrochloric acid corrosion rate, and stress corrosion cracking resistance outperform 304 stainless steel and approach those of the high-cost nickel-based alloy Inconel 625. Its core advantages include:
1. Broad Corrosion Resistance: Excellent performance in environments ranging from strong acids to high chloride ion concentrations, covering over 90% of industrial corrosion scenarios.
2. Long Service Life: In harsh environments, its service life can be 3-5 times that of ordinary stainless steel, significantly reducing maintenance costs.
3. Reliability: Passivation treatment and strict non-destructive testing ensure no local corrosion defects, providing long-term stable performance.
3. Reliability: Passivation treatment and strict non-destructive testing ensure no local corrosion defects, providing long-term stable performance.
Conclusion
The W.Nr.1.4980 Stud Bolt demonstrates exceptional corrosion resistance in high-temperature oxidation, chemical corrosion, and stress corrosion environments through its high chromium/molybdenum alloy design and advanced surface treatment technologies. Its comprehensive corrosion resistance surpasses that of 304/316 stainless steel and approaches that of high-cost nickel-based alloys (e.g., Inconel 625), making it a cost-effective high-end corrosion protection solution suitable for demanding conditions in industries such as chemical, petrochemical, and energy.
The W.Nr.1.4980 Stud Bolt demonstrates exceptional corrosion resistance in high-temperature oxidation, chemical corrosion, and stress corrosion environments through its high chromium/molybdenum alloy design and advanced surface treatment technologies. Its comprehensive corrosion resistance surpasses that of 304/316 stainless steel and approaches that of high-cost nickel-based alloys (e.g., Inconel 625), making it a cost-effective high-end corrosion protection solution suitable for demanding conditions in industries such as chemical, petrochemical, and energy.
Send Message
