GB/T 3280-2015 Stainless Steel Grades
This table provides a comprehensive list of stainless steel grades in GB/T 3280-2015, covering all major families (austenitic, ferritic, martensitic, duplex, super duplex, and precipitation hardening) with their UNS equivalents and typical applications. For further details, consult the official GB/T 3280-2015 standard or contact a materials supplier.
| GB/T Grade | UNS Number | Stainless Steel Family | Common Applications and Characteristics |
| 06Cr13 | S41008 | Martensitic | Basic martensitic grade, used for cutlery and general-purpose applications. Moderate corrosion resistance. |
| 12Cr13 | S41000 | Martensitic | Similar to 410, used in knives, turbine blades. High hardness after heat treatment. |
| 20Cr13 | S42000 | Martensitic | Cutting tools, surgical instruments. Higher carbon for increased hardness. |
| 30Cr13 | S42030 | Martensitic | High-strength cutting tools, razor blades. High hardness, moderate corrosion resistance. |
| 68Cr17 | S44004 | Martensitic | High-carbon, used for razor blades, surgical tools. Hardness up to 58 HRC. |
| 06Cr17 | S43000 | Ferritic | Decorative applications, automotive trim. Good formability, magnetic, moderate corrosion resistance. |
| 022Cr17 | S43035 | Ferritic | Low-carbon ferritic, used in appliances, better corrosion resistance than 430. |
| 10Cr17 | S43940 | Ferritic | High chromium, used in automotive exhaust systems, ferromagnetic. |
| 06Cr19Ni10 | S30400 | Austenitic | Equivalent to 304, widely used in food processing, architecture. High corrosion resistance, non-magnetic. |
| 022Cr19Ni10 | S30403 | Austenitic | Low-carbon 304L, improved weldability, used in chemical and food industries. |
| 06Cr19Ni10N | S30451 | Austenitic | Nitrogen-enhanced 304, higher strength, used in structural applications. |
| 07Cr19Ni10 | S30409 | Austenitic | Higher carbon 304H, used in high-temperature applications. |
| 06Cr23Ni13 | S30908 | Austenitic | Equivalent to 309, high heat resistance, used in furnace parts, heat exchangers. |
| 06Cr25Ni20 | S31008 | Austenitic | Equivalent to 310, excellent high-temperature resistance, used in kilns, radiant tubes. |
| 06Cr17Ni12Mo2 | S31600 | Austenitic | Equivalent to 316, molybdenum-enhanced, used in marine and chemical environments. |
| 022Cr17Ni12Mo2 | S31603 | Austenitic | Low-carbon 316L, used in welded structures, high corrosion resistance. |
| 06Cr17Ni12Mo2Ti | S31635 | Austenitic | Titanium-stabilized 316Ti, used in high-temperature corrosive environments. |
| 022Cr17Ni12Mo2N | S31651 | Austenitic | Nitrogen-enhanced 316, higher strength, used in chemical processing. |
| 022Cr18Ni14Mo2 | S31703 | Austenitic | Low-carbon 317L, higher molybdenum, used in severe chemical environments. |
| 06Cr18Ni11Ti | S32100 | Austenitic | Equivalent to 321, titanium-stabilized, used in high-temperature applications (800-1500°F). |
| 06Cr18Ni11Nb | S34700 | Austenitic | Equivalent to 347, niobium-stabilized, used in jet engines, high-temperature applications. |
| 015Cr21Ni26Mo5Cu2 | S31254 | High Molybdenum | High-alloy, used in seawater, chemical processing, excellent corrosion resistance. |
| 022Cr22Ni5Mo3N | S31803 | Duplex | Equivalent to 2205, used in oil and gas, chemical industries, high strength and corrosion resistance. |
| 022Cr23Ni5Mo3N | S32205 | Duplex | Enhanced 2205, higher corrosion resistance, used in aggressive environments. |
| 022Cr25Ni7Mo4N | S32750 | Super Duplex | High strength, used in offshore, marine applications, superior corrosion resistance. |
| 022Cr25Ni7Mo4WCuN | S32760 | Super Duplex | High corrosion resistance, used in seawater, chemical processing. |
| 022Cr25Ni6Mo2N | S32550 | Super Duplex | High strength, used in pulp and paper, chemical industries. |
| 06Cr20Ni11 | S30100 | Austenitic | Equivalent to 301, high strength, used in automotive trim, springs. |
| 06Cr17Ni7Al | S17700 | Precipitation Hardening | Equivalent to 17-7 PH, high strength, used in aerospace, chemical equipment. |
| 05Cr15Ni5Cu4Nb | S17400 | Precipitation Hardening | Equivalent to 17-4 PH, high strength and toughness, used in aerospace, nuclear applications. |
| 022Cr20Ni18Mo6CuN | N08904 | Austenitic | Equivalent to 904L, high-alloy, used in sulfuric acid processing, severe environments. |
| 022Cr20Ni25Mo7CuN | N08367 | Austenitic | High-alloy, used in flue gas desulfurization, extreme corrosion resistance. |
| 022Cr19Ni13Mo3 | S31700 | Austenitic | Equivalent to 317, high molybdenum, used in chemical processing. |
| 06Cr15Ni25Ti2MoAlVB | S66286 | Austenitic | High-temperature alloy, used in gas turbines, aerospace components. |
| 12Cr17Ni7 | S30110 | Austenitic | Nitrogen-enhanced 301, used in high-strength structural applications. |
| 12Cr17Mn6Ni5N | S20100 | Austenitic | Equivalent to 201, cost-effective, used in cookware, appliances. |
| 12Cr18Mn9Ni5N | S20200 | Austenitic | Similar to 201, higher manganese, used in structural components. |
| 12Cr16Ni35 | N08020 | Austenitic | Equivalent to Alloy 20, used in sulfuric acid, chemical processing. |
| 022Cr17Ni13Mo2N | S31753 | Austenitic | Nitrogen-enhanced 317L, used in severe corrosive environments. |
| 08Cr18Ni9 | S30200 | Austenitic | Similar to 302, used in stamping, spinning, high corrosion resistance. |
| 022Cr19Ni5Mo3Si2N | S31500 | Duplex | Lean duplex, used in structural applications, good corrosion resistance. |
| 03Cr22Ni4Mo2N | S32003 | Duplex | Lean duplex, cost-effective, used in chemical and marine industries. |
Notes:
- Grades are derived from GB/T 3280-2015 and cross-referenced with GB/T 20878-2007 for chemical composition and UNS equivalents.
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