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Duplex Stainless Steel 2205 Fastener
QS Fastener: Duplex Stainless Steel 2205 Fastener
Name: Duplex Stainless Steel 2205 Fastener
Material: Duplex Stainless Steel 2205
Standard: UNS S32205
Size: M8 to M100
Hardness: 290 HB
Length: 20 to 1000 mm
Application: For Petroleum chemical industry and marine engineering
Feature: High strength: The yield strength is approximately twice that of ordinary 304 or 316 austenitic stainless steel.
Material: Duplex Stainless Steel 2205
Standard: UNS S32205
Size: M8 to M100
Hardness: 290 HB
Length: 20 to 1000 mm
Application: For Petroleum chemical industry and marine engineering
Feature: High strength: The yield strength is approximately twice that of ordinary 304 or 316 austenitic stainless steel.
Quantity
This product is manufactured from Duplex Stainless Steel 2205 (UNS S32205), with a size range covering M8 to M100 and customizable lengths from 20 to 1000 mm, fully meeting the connection requirements under various working conditions. The duplex structure endows the product with excellent comprehensive performance: the yield strength is approximately twice that of conventional 304 / 316 austenitic stainless steel, combined with outstanding resistance to stress corrosion cracking and good toughness. The product maintains a stable hardness of 290 HB, making it suitable for high-corrosion and high-load environments such as the petrochemical industry and marine engineering—a reliable and durable high-performance fastening solution for demanding applications.
What is Duplex Stainless Steel 2205?
Duplex Stainless Steel 2205 is a type of duplex stainless steel that combines the advantages of both austenitic and ferritic stainless steels. Known for its high strength and excellent corrosion resistance, especially in environments containing chlorides, it is one of the most commonly used duplex steel grades on the market. When processed into Duplex Stainless Steel 2205 Fastener, these characteristics make it an ideal choice for marine engineering, chemical equipment, and high-end structural connection applications.
Duplex Stainless Steel 2205 is a type of duplex stainless steel that combines the advantages of both austenitic and ferritic stainless steels. Known for its high strength and excellent corrosion resistance, especially in environments containing chlorides, it is one of the most commonly used duplex steel grades on the market. When processed into Duplex Stainless Steel 2205 Fastener, these characteristics make it an ideal choice for marine engineering, chemical equipment, and high-end structural connection applications.
Does 2205 stainless steel rust?
Duplex Stainless Steel 2205 does not rust in the vast majority of conventional environments, but under specific harsh conditions (such as high-concentration chloride environments or improper heat treatment), corrosion may still occur. For Duplex Stainless Steel 2205 Fastener, its performance is directly related to the long-term reliability of the entire connection structure.
Duplex Stainless Steel 2205 does not rust in the vast majority of conventional environments, but under specific harsh conditions (such as high-concentration chloride environments or improper heat treatment), corrosion may still occur. For Duplex Stainless Steel 2205 Fastener, its performance is directly related to the long-term reliability of the entire connection structure.
It is a high-performance duplex stainless steel. Thanks to its unique chemical composition and metallurgical structure, its corrosion resistance far exceeds that of ordinary 304 and 316L stainless steels. Using a fastening solution with Duplex Stainless Steel 2205 Fastener can effectively reduce maintenance costs under harsh operating conditions.
👍 Why is it"rust-resistant"?
The corrosion resistance of Duplex Stainless Steel 2205 is mainly attributed to its balanced chemical composition (approximately 22% chromium, 5-6% nickel, 3% molybdenum, and nitrogen) and its duplex structure consisting of about 50% austenite and 50% ferrite. These characteristics are fully reflected in Duplex Stainless Steel 2205 Fastener:
- Uniform Corrosion Resistance: Its performance in most acidic and alkaline solutions is superior to that of 316L.
- Pitting/Crevice Corrosion Resistance: The high content of chromium, molybdenum, and nitrogen gives it a high pitting resistance equivalent number in environments containing chlorides (such as seawater), effectively resisting localized corrosion. This makes Duplex Stainless Steel 2205 Fastener particularly suitable for marine engineering and desalination equipment.
- Stress Corrosion Cracking Resistance: The duplex structure provides strong resistance to"chloride stress corrosion cracking,"which is the most troublesome issue for austenitic stainless steels, ensuring that Duplex Stainless Steel 2205 Fastener maintains excellent stability even when subjected to preload.
The corrosion resistance of Duplex Stainless Steel 2205 is mainly attributed to its balanced chemical composition (approximately 22% chromium, 5-6% nickel, 3% molybdenum, and nitrogen) and its duplex structure consisting of about 50% austenite and 50% ferrite. These characteristics are fully reflected in Duplex Stainless Steel 2205 Fastener:
- Uniform Corrosion Resistance: Its performance in most acidic and alkaline solutions is superior to that of 316L.
- Pitting/Crevice Corrosion Resistance: The high content of chromium, molybdenum, and nitrogen gives it a high pitting resistance equivalent number in environments containing chlorides (such as seawater), effectively resisting localized corrosion. This makes Duplex Stainless Steel 2205 Fastener particularly suitable for marine engineering and desalination equipment.
- Stress Corrosion Cracking Resistance: The duplex structure provides strong resistance to"chloride stress corrosion cracking,"which is the most troublesome issue for austenitic stainless steels, ensuring that Duplex Stainless Steel 2205 Fastener maintains excellent stability even when subjected to preload.
⚠️ What situations can cause it to"rust"?
Despite its superior performance, the following conditions may still damage its surface passive film, leading to rust. For Duplex Stainless Steel 2205 Fastener, the following risk points require special attention:
1. In extremely high-concentration chloride environments: Although it resists seawater corrosion, if it is exposed to high temperatures and high concentrations of chlorides (such as in certain industrial processes or specific salt spray environments) for a prolonged period, pitting corrosion may still occur. In this case, selecting Duplex Stainless Steel 2205 Fastener manufactured by a reputable supplier and verifying its actual composition is key to ensuring corrosion resistance.
Despite its superior performance, the following conditions may still damage its surface passive film, leading to rust. For Duplex Stainless Steel 2205 Fastener, the following risk points require special attention:
1. In extremely high-concentration chloride environments: Although it resists seawater corrosion, if it is exposed to high temperatures and high concentrations of chlorides (such as in certain industrial processes or specific salt spray environments) for a prolonged period, pitting corrosion may still occur. In this case, selecting Duplex Stainless Steel 2205 Fastener manufactured by a reputable supplier and verifying its actual composition is key to ensuring corrosion resistance.
2. Improper heat treatment or welding: This is the most common human factor. If the heat treatment or welding process is improper (such as holding within the range of 850-950°C for too long), harmful"σ phase"(sigma phase) may precipitate. This precipitation creates"chromium-depleted zones"in the surrounding areas, significantly reducing corrosion resistance and leading to preferential corrosion. For Duplex Stainless Steel 2205 Fastener that require welding, the heat input should be strictly controlled, and appropriate post-weld procedures should be adopted.
3. Severe surface contamination or scratching: If the surface is covered by other contaminants (such as iron-containing dust, oil) for a long time, or if it is severely scratched and contaminated by carbon steel tools during installation, damaging the surface passive film, rust may occur under specific environments. When installing Duplex Stainless Steel 2205 Fastener, it is recommended to use dedicated stainless steel tools and avoid direct contact with carbon steel materials.
Duplex Stainless Steel 2205 is a highly corrosion-resistant material and typically does not rust. When processed into Duplex Stainless Steel 2205 Fastener, it not only leverages the material's inherent strength and corrosion resistance advantages but also places higher demands on processing techniques and installation specifications. However, if encountered with non-standard processing or welding, or extreme corrosive environments beyond its design scope, the risk of failure still exists.
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