Stainless chromium-titanium steel with ferritic structure X2CrTi12, 1.4512, AISI 409 according to EN 10088-2.
| Standards | Steel Grades | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chemical Composition % | |||||||||
| C: | Mn: | Si: | P: | S: | Cr: | Ni: | Ti: | N: | |
| EN | X2CrTi12 - 1.4512 | ||||||||
| <0.03 | <1.0 | <1.0 | <0.040 | <0.015 | 10.5 - 12.5 | - | <0.65 | - | |
| EN | X5CrTi12 | ||||||||
| <0.08 | <1.0 | <1.0 | <0.040 | <0.030 | 10.5 - 12.5 | - | <1.0 | ||
| AFNOR | Z3CT12 | ||||||||
| <0.03 | <0.8 | <0.75 | <0.040 | <0.015 | 10.5 - 12.5 | - | <0.6 | <0.025 | |
| SEW 470 | X7CrTi12 - 1.4720 | ||||||||
| <0.08 | <1.0 | <1.0 | <0.040 | <0.030 | 10.5 - 12.5 | - | <1.0 | - | |
| BS | 409S19 | ||||||||
| <0.08 | <1.0 | <1.0 | <0.040 | <0.030 | 10.5 - 12.5 | <1.0 | <1.0 | - | |
| ISO | X6CrTi12 | ||||||||
| <0.08 | <1.0 | <1.0 | <0.040 | <0.030 | 10.5 - 12.5 | <0.5 | <0.65 | - | |
| UNI | X6CrTi12 | ||||||||
| <0.08 | <1.0 | <1.0 | <0.040 | <0.030 | 10.5 - 12.5 | <0.5 | <0.8 | - | |
| ASTM | AISI 409 - UNS S40900 - TP409 | ||||||||
| <0.08 | <1.0 | <1.0 | <0.045 | <0.030 | 10.5 - 11.7 | <0.5 | <0.75 | - | |
Specification and application
X2CrTi12 steel is a ferritic grade with an average of 11% chromium and 1% of Titanium in the chemical composition. Produced mostly in the form of sheets, strips and bars, it finds its application mainly in the automotive industry or in the machine industry.
Exhaust systems, small structures, car and other vehicles or machines mufflers are the most common components that are made from the above mentioned grade. None Nickel or its small content in the composition is associated with a ferritic structure, resulting in a relatively higher flue gas resistance.
Materials in the X2CrTi12 grade can work freely for extended periods of time at elevated temperatures of 500 - 600 ℃, which can be classified as heat resistant steel (bypassing standards). Unlike austenitic acid resistant steel, 1.4512 is not resistant to numerous salts, acids or bases.
Mechanical properties in annealed condition:
- Tensile strength, Rm: 390 - 560 MPa
- Yield point, Re: > 220 MPa
- Elongation, A > 20%
- Modulus of elasticity, E = 220 GPa
- Heat capacity, cp20℃= 460 J * Kg-1 * K-1
- Heat conductivity, λ = 25 W * m-1 * K-1
- Hardness: < 180 HB
Yield point at individual work temperatures
| Properties specified in the MPa | Approximate properties at temperatures | |||||||
|---|---|---|---|---|---|---|---|---|
| 100℃ | 150℃ | 200℃ | 250℃ | 300℃ | 350℃ | |||
| Yield point | Re | > 200 | > 195 | > 185 | > 180 | > 180 | > 160 | |
Other properties at elevated temperatures
| Properties | Temperatures | ||||
|---|---|---|---|---|---|
| 100℃ | 200℃ | 300℃ | 400℃ | 500℃ | |
| Modulus of elasticity, E (GPa) | 215 | 210 | 205 | 195 | - |
| Linear Expansion Factor α (10-6 * K-1) | 10,5 | 11,0 | 11,5 | 12,0 | 12,0 |
Heat treatment process
- Annealing at 770 - 830℃ with cooling in water or air
- Forging and rolling at 1100 - 800℃
In the above mentioned grades the company provides:
Equivalents and other designations of X2CrTi12:
1.4512, 4512, AISI 409, UNS S40900, UNS S40910, UNS S40920, UNS S40930, SAE 51409, TP409, X2CrTi12, X6CrTi12, X 2 CrTi 12, X 6 CrTi 12, X 6 CrTi 17, X6CrTi12, X6CrTi17, X6CrTi12E, 409S19, 409 S 19, LW12, LW19, X7CrTi12, X 7 CrTi 12, Z3CT12, Z 3 CT 12, F12T, X5CrTi12, X 5 CrTi 12, 00Cr12Ti, 022Cr11Ti, 06Cr11Ti, 0Cr11Ti, F1-25H, F1-45, F1-60, UNS S 40900,