Ti-stabilised austenitic stainless. Immune to sensitisation at 425-900 C service temperatures. Standard for exhaust systems and high-temperature piping.
X6CrNiTi18-10 (EN 1.4541 / AISI 321) per EN 10088. Ti addition (min 5×C%, max 0.70%) stabilises the steel against sensitisation by combining with carbon to form TiC. Standard for exhaust manifolds, catalytic converter housings and high-temperature chemical equipment.
| Standard Body | Designation | Country / Region | Note |
|---|---|---|---|
| EN | X6CrNiTi18-10 | European Union | |
| DIN | 1.4541 | Germany | |
| AISI/SAE | 321 | USA | |
| ASTM | A240 / A276 Type 321 | USA | |
| BS EN | 321S31 | UK | |
| JIS | SUS321 | Japan | |
| GOST | 08X18H10T (08Kh18N10T) | Russia / CIS | |
| UNI | X6CrNiTi18-10 | Italy | |
| NF | Z6CNT18-10 | France | |
| SS | 2337 | Sweden | |
| PN | 0H18N10T | Poland | |
| CSN | 17246 | Czech Republic | |
| UNS | S32100 | USA (UNS) | |
| GB | 06Cr18Ni11Ti | China | |
| JUS | C.4580Ti | Yugoslavia / Serbia | Ti-stabilised austenitic stainless steel |
| ISO | X6CrNiTi18-10 | International |
| # | Standard Body | Designation | Country / Region | Note |
|---|---|---|---|---|
| 1 | EN | X6CrNiTi18-10 | European Union | — |
| 2 | DIN | 1.4541 | Germany | — |
| 3 | AISI/SAE | 321 | USA | — |
| 4 | ASTM | A240 / A276 Type 321 | USA | — |
| 5 | BS EN | 321S31 | UK | — |
| 6 | JIS | SUS321 | Japan | — |
| 7 | GOST | 08X18H10T (08Kh18N10T) | Russia / CIS | — |
| 8 | UNI | X6CrNiTi18-10 | Italy | — |
| 9 | NF | Z6CNT18-10 | France | — |
| 10 | SS | 2337 | Sweden | — |
| 11 | PN | 0H18N10T | Poland | — |
| 12 | CSN | 17246 | Czech Republic | — |
| 13 | UNS | S32100 | USA (UNS) | — |
| 14 | GB | 06Cr18Ni11Ti | China | — |
| 15 | JUS | C.4580Ti | Yugoslavia / Serbia | Ti-stabilised austenitic stainless steel |
| 16 | ISO | X6CrNiTi18-10 | International | — |
| Element | Symbol | Min % | Max % | Typical % |
|---|---|---|---|---|
| Carbon | C | — | 0.0800 | 0.0500 |
| Silicon | Si | — | 1.0000 | 0.5000 |
| Manganese | Mn | — | 2.0000 | 1.2000 |
| Chromium | Cr | 17.0000 | 19.0000 | 17.5000 |
| Nickel | Ni | 9.0000 | 12.0000 | 10.5000 |
| Titanium | Ti | 0.2500 | 0.7000 | 0.4000 |
| Nitrogen | N | — | 0.1100 | 0.0500 |
| Condition | Code | Rm min MPa | Rm max MPa |
Re min MPa | Re max MPa |
A₅ min % |
Z % |
KV J |
HB min | HB max | HRC min | HRC max | E GPa |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solution Annealed | +AT | 515 | 710 | 205 | 315 | 40.0 | — | — | — | 217 | — | — | 193.0 |
| Coolant | High-pressure flood coolant — mandatory |
| Chip Formation | Long stringy chips; work-hardening severe |
| Tool Material | TiAlN coated carbide; sharp positive rake |
| Surface Finish | Ra 0.4-1.6 um |