We have a wide range of Certified Reference Materials of stainless steels suitable for use as calibration standards, type standards, Positive Material Identification (PMI) and proficiency testing materials. These CRM's are available as thin disks for XRF, thick discs for OE and chips for ICP-OES , ICP-MS and AA. 
We currently offer the following grades but if you don't see what you are looking for, let us know and we can develop it through our rapid certification program.
| A286 | AISI 410 | Alloy AM355 | NMS-100 |
| Aermet 100 | AISI 415 | Alloy C-250 | PH13-8Mo |
| AISI 15-5PH | AISI 416 | Alloy C-300 | Zeron 100 |
| AISI 17-4 PH | AISI 420 | Alloy C-350 | |
| AISI 17-7 PH | AISI 420FS | Custom 450 | |
| AISI 301 | AISI 422 | Custom 455 | |
| AISI 302 | AISI 430 | Custom 465 | |
| AISI 302 HQ | AISI 430FS | Ferralium 255 | |
| AISI 303 | AISI 431 | Greek Ascoloy | |
| AISI 303Se | AISI 440C | Haynes 556 | |
| AISI 304 | AISI 440F Se | Invar-36 | |
| AISI 304L | AISI 446 | Kovar | |
| AISI 309 | Alloy 16-6-2-2 | M-152 | |
| AISI 310 | Alloy 2101 | Maraging 300 | |
| AISI 316 | Alloy 2205 | Nitronic 40 | |
| AISI 316H | Alloy 2304 | Nitronic 50 | |
| AISI 316L | Alloy 2507 | Nitronic 60 | |
| AISI 317L | Alloy 253MA | NMS 140 | |
| AISI 321 | Alloy 254SMO | NMS J38 | |
| AISI 347 | Alloy 255 | NMS MDC |