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
Quanzhou Hex Bolt
QS Fastener: Quanzhou Hex Bolt
Name: Quanzhou Hex Bolt
Standard: DIN 933
Material: D2-80
Size: M6-1
Lenght: 20mm
Surface: Natural color
Standard: DIN 933
Material: D2-80
Size: M6-1
Lenght: 20mm
Surface: Natural color
Quantity
The Quanzhou Hex Bolt M6-1 x 20mm is a precision-engineered fastener manufactured to DIN 933 specifications from D2-80 duplex stainless steel. This nitrogen-strengthened Cr-Mn-Ni-Mo alloy delivers a minimum tensile strength of 800 MPa, combining the high strength of ferritic steel with the corrosion resistance and toughness of austenitic grades. The fully threaded 20mm shank comes in a natural finish—no coating required to withstand aggressive salt-spray or chemical atmospheres.
Material Composition & Performance
D2-80 features an ultra-low carbon content (C ≤0.04%), suppressing M23C6 carbide precipitation and ensuring ≥35 J impact toughness at -40°C. The high-chromium content (Cr 19-24%) establishes a dense Cr₂O₃ passive film, delivering a Pitting Resistance Equivalent Number (PREN) of Cr + 3.3 Mo + 16 N ≥26—passing ASTM A923-C intergranular corrosion tests. Molybdenum (Mo 0.1-1.0%) and nitrogen (N 0.05-0.20%) further enhance resistance to pitting and chloride attack, with critical pitting potential 180 mV higher than 304 stainless steel in 6% FeCl₃ solution.
D2-80 features an ultra-low carbon content (C ≤0.04%), suppressing M23C6 carbide precipitation and ensuring ≥35 J impact toughness at -40°C. The high-chromium content (Cr 19-24%) establishes a dense Cr₂O₃ passive film, delivering a Pitting Resistance Equivalent Number (PREN) of Cr + 3.3 Mo + 16 N ≥26—passing ASTM A923-C intergranular corrosion tests. Molybdenum (Mo 0.1-1.0%) and nitrogen (N 0.05-0.20%) further enhance resistance to pitting and chloride attack, with critical pitting potential 180 mV higher than 304 stainless steel in 6% FeCl₃ solution.
The low-copper formulation (Cu ≤0.3%) prevents galvanic corrosion in new-energy battery and electrolytic copper foil applications, while remaining compliant with environmental regulations. Nickel content (Ni 1.5-5.5%) stabilizes a 40-60% austenite fraction, delivering an optimal balance of strength and ductility. VIM+ESR duplex melting ensures oxygen content below 25 ppm and inclusion ratings A/B/C/D (fine) ≤1.0.
Application Scenarios
This Quanzhou Hex Bolt is purpose-built for demanding environments where standard A2-70 or A4-80 fasteners fall short:
- Offshore wind farms – salt-spray resistance eliminates maintenance
- Ship deck construction – anti-galling performance prevents thread seizure
- Chemical processing equipment – withstands dilute sulfuric acid and chloride media
- New-energy battery systems – low-copper design prevents galvanic issues
- High-end mechanical assemblies – 800 MPa tensile strength enables weight reduction
This Quanzhou Hex Bolt is purpose-built for demanding environments where standard A2-70 or A4-80 fasteners fall short:
- Offshore wind farms – salt-spray resistance eliminates maintenance
- Ship deck construction – anti-galling performance prevents thread seizure
- Chemical processing equipment – withstands dilute sulfuric acid and chloride media
- New-energy battery systems – low-copper design prevents galvanic issues
- High-end mechanical assemblies – 800 MPa tensile strength enables weight reduction
Quanzhou Fastener Industry Context
Quanzhou, Fujian Province, has emerged as a significant manufacturing hub for the fastener industry. The city hosts numerous fastener manufacturers and suppliers, Manufacturing operating from facilities in Nan'an and surrounding areas. The Quanzhou Hex Bolt exemplifies the region's capability to produce high-performance, corrosion-resistant fastening solutions meeting global standards.
Quanzhou, Fujian Province, has emerged as a significant manufacturing hub for the fastener industry. The city hosts numerous fastener manufacturers and suppliers, Manufacturing operating from facilities in Nan'an and surrounding areas. The Quanzhou Hex Bolt exemplifies the region's capability to produce high-performance, corrosion-resistant fastening solutions meeting global standards.
Why Choose Quanzhou Hex Bolt?
The"high-chromium, medium-manganese, low-nickel, nitrogen-reinforced, low-copper"design equips each M6-1 x 20mm Hex Bolt with 800 MPa tensile strength, PREN ≥26 pitting resistance, and full environmental compliance—an ideal replacement for traditional stainless steel fasteners in critical applications. Install once, maintenance-free for life.
The"high-chromium, medium-manganese, low-nickel, nitrogen-reinforced, low-copper"design equips each M6-1 x 20mm Hex Bolt with 800 MPa tensile strength, PREN ≥26 pitting resistance, and full environmental compliance—an ideal replacement for traditional stainless steel fasteners in critical applications. Install once, maintenance-free for life.
Send Message
