| Grade (ASTM) |
Grade (ISO 3506) |
Grade (DIN 17440) |
Other Names |
Type | Description | PREN | % Cr | % Mo | % Ni | % N |
|---|---|---|---|---|---|---|---|---|---|---|
| 410 | C1 | 1.4006 | 2302 | Martensitic |
Common Use
Able to be hardened, low corrosion resistance
Availability
Self Drilling Screws ex stock
|
11 | 11.5-13.5 | - | <0.75 | - |
| - | - | - | Hardtec, KDS2000 | Martensitic |
Common Use
Able to be hardened, very good corrosion resistance
Availability
Self Drilling Screws ex stock
|
16 | 13 | 1-2% | - | - |
| 310 | - | 1.4845 | 2336 | Austenitic |
Common Use
High-temperature resistance, furnace parts
Availability
Made to order
|
17 | 16-18 | - | 17 | <0.10 |
| 201 | - | 1.4372 | 2331 | Austenitic |
Common Use
Lower nickel, general-purpose, cookware
Availability
Not in fasteners
| 20 | 16-18 | - | 3.5-5.5 | <0.25 |
| 303 | A1 | 1.4305 | 2346 | Austenitic |
Common Use
General-purpose, more easily machined
Availability
Some machined items ex stock
| 18 | 17-19 | - | 8-10 | - |
| 302 | A2 | 1.4310 | - | Austenitic |
Common Use
Similar to 304, higher tensile strength
Availability
Many 304 screws are 302
| 19 | 17-19 | - | 8-10 | - |
| 302HQ | A2 | 1.4567 | - | Austenitic |
Common Use
Cold-heading grade for fasteners (high ductility, low work hardening)
Availability
Many 304 screws are 302HQ
| 19 | 17-19 | - | 8-10 | <0.25 |
| 305 | A2 | 1.4303 | - | Austenitic |
Common Use
Non-hardening during cold working, excellent cold formability
Availability
Some screws are made of 305
| 19 | 17-19 | - | 10-13 | - |
| 304 | A2 | 1.4301 | A2-50 A2-70 2333 |
Austenitic |
Common Use
General-purpose, food processing
Availability
Available for most fasteners and hardware ex stock
| 19 | 18-20 | - | 8-10 | <0.10 |
| 316 | A4 | 1.4401 | 2347 A4-70 A4-80 |
Austenitic |
Common Use
Coastal environments, chemical processing
Availability
Available for most fasteners and hardware ex stock
| 24 | 16-18 | 2.0-3.0 | 10-14 | <0.10 |
| 316L | A4 | 1.4404 | 2348 | Austenitic |
Common Use
Coastal environments and food processing, a lower carbon version ideal for welding
Availability
Tube Bends and items requiring welding ex stock
| 24 | 16-18 | 2.5-3.0 | 10-14 | <0.10 |
| 316LHiMo | A4 | - | 2350 Bumax 88 Bumax 109 |
Austenitic |
Common Use
Coastal environments, chemical and food processing
Availability
Available for many fastener types ex stock
| 25 | 16-18 | 2.5-3 | 10-14 | <0.10 |
| 321 | - | 1.4541 | 2337 | Austenitic |
Common Use
High-temperature applications
Availability
Made to order
| 19 | 17-19 | <0.75 | 9-12 | <0.10 |
| 904L | - | 1.4539 | 2562 | Super Austenitic |
Common Use
High corrosion resistance, chemicals, suitable for use above indoor pools
Availability
Made to order
| 36 | 19-23 | 4.0-5.0 | 23-28 | <0.10 |
| 254SMO | - | 1.4547 | 6Mo 2378 UNS S31254 |
Super Austenitic |
Common Use
High corrosion resistance, suitable for use above indoor pools
Availability
Nord Lock washers ex stock and other items made to order
| 43 | 19-20 | 6-6.5 | 17-18 | 0.18-0.25 |
| 2202 | D2 | 1.4062 | 2377 | Lean Duplex |
Common Use
General engineering, duplex stainless
Availability
Made to order
| 25 | 21-23 | 0.2-0.6 | 4.5-6.5 | 0.05-0.20 |
| 2205 | D6 | 1.4462 | 2378/UNS S31803 S32205/Bumax DX129 |
Duplex |
Common Use
Oil & gas, chemical
Availability
Made to order
| 35 | 22-23 | 3-3.5 | 4.5-6.5 | 0.14-0.2 |
| 2507 | D8 | 1.4410 | 2328/UNS S32750 SAF 2507/Bumax SDX109 |
Super Duplex |
Common Use
Super duplex, high corrosion resistance, often used in and around salt-water
Availability
Ex stock for many items
| 41 | 24-26 | 3.0-5.0 | 9-12 | 0.24-0.32 |
If the PREN value for a SS is over 40, the SS should be fully resistant to localised corrosion (pitting/crevice corrosion) when immersed in seawater.
For strength classes, please refer to the Tensile Strength Comparison Chart.
For more information on corrosion resistance PREN values, click here.
For advice about stainless steel, contact the Nickel Institute.
The information above is provided as a guide only and Anzor does not accept liability for the application of this information.
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