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DIN Fastener Chinese Factory
QS Fastener: DIN Fastener Chinese Factory
Name: DIN Fastener Chinese Factory
Material: S32205
Size: M5 to M100
Lenght: 30 to 800 mm
Standard: ANSI, DIN
Elongation: 25%
Grade: A
Feature: Good resistance to chloride ion stress corrosion and good resistance to sulfide stress corrosion. At the same time, it has high mechanical strength.
Application: For Paper industry equipment, Food industry processing equipment, Thermal power plant flue gas desulfurization equipment, Offshore oil platforms, Desalination equipment, Oil field pipelines and equipment and other chemical equipment.
Price: USD 49 - 99/ Kg
MOQ: 10kg
Customization: yes
Delivery time: 7-30 Day
Material: S32205
Size: M5 to M100
Lenght: 30 to 800 mm
Standard: ANSI, DIN
Elongation: 25%
Grade: A
Feature: Good resistance to chloride ion stress corrosion and good resistance to sulfide stress corrosion. At the same time, it has high mechanical strength.
Application: For Paper industry equipment, Food industry processing equipment, Thermal power plant flue gas desulfurization equipment, Offshore oil platforms, Desalination equipment, Oil field pipelines and equipment and other chemical equipment.
Price: USD 49 - 99/ Kg
MOQ: 10kg
Customization: yes
Delivery time: 7-30 Day
Quantity
As a senior fastener engineer, I can confirm that the DIN W.Nr.1.4462 (S32205) duplex stainless steel fastener represents a superior solution for applications demanding both exceptional corrosion resistance and high mechanical strength. Manufactured by a specialized Chinese factory with advanced metallurgical control, this DIN fastener delivers consistent quality across a broad size range (M5 to M100, lengths 30–800 mm) and complies fully with ANSI and DIN standards.
The key differentiator lies in its balanced duplex microstructure (~50% austenite / 50% ferrite). This unique phase combination provides grain refinement and dislocation strengthening, yielding a minimum yield strength of 450–700 MPa – more than double that of 304/316 austenitic grades. With tensile strength reaching 620–900 MPa, elongation at 25%, and hardness of 250–300 HV, this fastener excels in high-load cyclic applications where fatigue resistance is critical (fatigue limit ~300 MPa). While its impact toughness (~100 J) is slightly lower than austenitic steels, it remains fully adequate for industrial service conditions.
From a corrosion engineering perspective, this grade offers outstanding resistance to chloride-induced stress corrosion cracking (SCC) and sulfide stress corrosion cracking (SSC) – two primary failure modes in aggressive media. This makes it the preferred choice for paper industry digesters, food processing evaporators, thermal power plant FGD scrubbers, offshore platform risers, seawater desalination reverse-osmosis skids, oilfield downhole tubing, and chemical reactor systems. Its combination of strength and corrosion resistance often allows for size reduction compared to standard austenitic fasteners, leading to weight savings and improved cost-efficiency.
Priced competitively at USD 49–99/kg with a low MOQ of 10 kg, custom manufacturing is available, and lead times range from 7 to 30 days. This Chinese factory leverages strict process control to ensure that every DIN fastener meets Grade A requirements with verified elongation and hardness. For engineers specifying critical bolted connections in sour service or high-chloride environments, this product offers a reliable, proven, and economically attractive alternative to nickel-based superalloys.
FAQ
Q1: What is the difference between S32205 and 2205 duplex stainless steel?
A1: S32205 is the UNS designation for 2205 duplex steel with tighter composition control (higher N and Mo), ensuring better pitting resistance and consistent mechanical properties.
Q1: What is the difference between S32205 and 2205 duplex stainless steel?
A1: S32205 is the UNS designation for 2205 duplex steel with tighter composition control (higher N and Mo), ensuring better pitting resistance and consistent mechanical properties.
Q2: Can this DIN fastener be used in high-temperature seawater applications?
A2: Yes, it performs well up to ~300°C in seawater. Above that, embrittlement may occur. For continuous exposure, stay below 280°C.
A2: Yes, it performs well up to ~300°C in seawater. Above that, embrittlement may occur. For continuous exposure, stay below 280°C.
Q3: Is this fastener suitable for sour gas (H₂S) environments per NACE MR0175?
A3: Yes, S32205 has good SSC resistance and can meet NACE MR0175 requirements when properly solution-annealed and tested.
A3: Yes, S32205 has good SSC resistance and can meet NACE MR0175 requirements when properly solution-annealed and tested.
Q4: Do you provide material test certificates (EN 10204 3.1 or 3.2)?
A4: Yes, we supply full mill test reports and, upon request, third-party inspection certificates.
A4: Yes, we supply full mill test reports and, upon request, third-party inspection certificates.
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