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خونه > اخبار >

اخبار شرکت در مورد Stainless Steel Grade Comparison Table for Fasteners

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Ms. Amylin
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+86--18658229310
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Stainless Steel Grade Comparison Table for Fasteners

2026-01-16
This table lists the most commonly used stainless steel grades for fasteners (screws, nuts, bolts, washers), with corresponding standards from major regions (ASTM/UNS, EN, GB/T, JIS) and key performance characteristics for reference in product selection and international trade.

Grade Type ASTM/UNS Designation EN Designation GB/T Designation JIS Designation Key Properties Typical Fastener Applications
Austenitic 304 / S30400 X5CrNi18-10 06Cr19Ni10 SUS304 Excellent corrosion resistance; good formability; non-magnetic; suitable for mild corrosive environments Drywall screws, machine screws, nuts for construction, kitchen hardware
Austenitic 304L / S30403 X2CrNi18-9 022Cr19Ni10 SUS304L Low-carbon version of 304; better intergranular corrosion resistance; ideal for welding applications Welded bolt assemblies, marine auxiliary fasteners
Austenitic 316 / S31600 X5CrNiMo17-12-2 06Cr17Ni12Mo2 SUS316 Superior corrosion resistance (especially to chloride); good heat resistance Marine fasteners, chemical equipment bolts, coastal construction screws
Austenitic 316L / S31603 X2CrNiMo17-12-2 022Cr17Ni12Mo2 SUS316L Low-carbon 316; enhanced weldability and intergranular corrosion resistance High-corrosion environment fasteners, pharmaceutical machinery parts
Martensitic 410 / S41000 X10Cr13 12Cr13 SUS410 High strength and hardness (after heat treatment); moderate corrosion resistance; magnetic High-strength bolts, valve fasteners, mechanical equipment screws
Martensitic 420 / S42000 X20Cr13 20Cr13 SUS420J1 Higher carbon content than 410; better hardness and wear resistance Cutting tool fasteners, high-pressure equipment bolts
Ferritic 430 / S43000 X6Cr17 06Cr17 SUS430 Good oxidation resistance; low cost; magnetic; limited formability Decorative fasteners, oven hardware, non-critical structural screws
Duplex 2205 / S32205 X2CrNiMoN22-5-3 022Cr22Ni5Mo3N SUS2205 High strength + excellent corrosion resistance; twice the strength of 316 Offshore oil platform fasteners, desalination equipment bolts

Key Notes for Fastener Applications


  1. Corrosion Resistance Priority

    For coastal, marine or chemical environments, 316/316L and duplex 2205 are preferred over 304, as they resist chloride-induced pitting corrosion.

  2. Strength Requirements

    Martensitic grades (410/420) are ideal for high-torque fasteners, but they require heat treatment to achieve optimal hardness (HRC 40-50). Austenitic grades offer moderate strength but better ductility.

  3. Welding Compatibility

    Low-carbon grades (304L/316L) are recommended for welded fastener assemblies, as they avoid intergranular corrosion caused by carbide precipitation during welding.

  4. Standard Equivalence

    The grades listed above are commercially equivalent across regions, but minor chemical composition variations may exist. Always confirm compliance with target market standards (e.g., EN 10088 for EU, ASTM A240 for North America).
بنر
جزئیات اخبار
خونه > اخبار >

اخبار شرکت در مورد-Stainless Steel Grade Comparison Table for Fasteners

حوادث

اخبار

پرونده ها

Stainless Steel Grade Comparison Table for Fasteners

2026-01-16
This table lists the most commonly used stainless steel grades for fasteners (screws, nuts, bolts, washers), with corresponding standards from major regions (ASTM/UNS, EN, GB/T, JIS) and key performance characteristics for reference in product selection and international trade.

Grade Type ASTM/UNS Designation EN Designation GB/T Designation JIS Designation Key Properties Typical Fastener Applications
Austenitic 304 / S30400 X5CrNi18-10 06Cr19Ni10 SUS304 Excellent corrosion resistance; good formability; non-magnetic; suitable for mild corrosive environments Drywall screws, machine screws, nuts for construction, kitchen hardware
Austenitic 304L / S30403 X2CrNi18-9 022Cr19Ni10 SUS304L Low-carbon version of 304; better intergranular corrosion resistance; ideal for welding applications Welded bolt assemblies, marine auxiliary fasteners
Austenitic 316 / S31600 X5CrNiMo17-12-2 06Cr17Ni12Mo2 SUS316 Superior corrosion resistance (especially to chloride); good heat resistance Marine fasteners, chemical equipment bolts, coastal construction screws
Austenitic 316L / S31603 X2CrNiMo17-12-2 022Cr17Ni12Mo2 SUS316L Low-carbon 316; enhanced weldability and intergranular corrosion resistance High-corrosion environment fasteners, pharmaceutical machinery parts
Martensitic 410 / S41000 X10Cr13 12Cr13 SUS410 High strength and hardness (after heat treatment); moderate corrosion resistance; magnetic High-strength bolts, valve fasteners, mechanical equipment screws
Martensitic 420 / S42000 X20Cr13 20Cr13 SUS420J1 Higher carbon content than 410; better hardness and wear resistance Cutting tool fasteners, high-pressure equipment bolts
Ferritic 430 / S43000 X6Cr17 06Cr17 SUS430 Good oxidation resistance; low cost; magnetic; limited formability Decorative fasteners, oven hardware, non-critical structural screws
Duplex 2205 / S32205 X2CrNiMoN22-5-3 022Cr22Ni5Mo3N SUS2205 High strength + excellent corrosion resistance; twice the strength of 316 Offshore oil platform fasteners, desalination equipment bolts

Key Notes for Fastener Applications


  1. Corrosion Resistance Priority

    For coastal, marine or chemical environments, 316/316L and duplex 2205 are preferred over 304, as they resist chloride-induced pitting corrosion.

  2. Strength Requirements

    Martensitic grades (410/420) are ideal for high-torque fasteners, but they require heat treatment to achieve optimal hardness (HRC 40-50). Austenitic grades offer moderate strength but better ductility.

  3. Welding Compatibility

    Low-carbon grades (304L/316L) are recommended for welded fastener assemblies, as they avoid intergranular corrosion caused by carbide precipitation during welding.

  4. Standard Equivalence

    The grades listed above are commercially equivalent across regions, but minor chemical composition variations may exist. Always confirm compliance with target market standards (e.g., EN 10088 for EU, ASTM A240 for North America).
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