X2CrTi12 is a titanium-stabilized low-carbon ferritic stainless steel containing about 11–12% chromium. This datasheet presents the material within the Werkstoff-Nummer (DIN / EN) designation system.
With nominally 11% chromium and about 1% titanium, 1.4512 offers good resistance to oxidation and flue gases at elevated temperature at low cost. The titanium stabilization ties up carbon and nitrogen, minimising sensitisation and improving formability. Being ferritic and essentially nickel-free, it is magnetic, cannot be hardened by heat treatment, and is largely insensitive to chloride stress-corrosion cracking. It can operate for extended periods at 500–600 °C and provides useful oxidation resistance in exhaust systems. It is not resistant to many salts, acids or bases the way austenitic grades are.
Typical applications include automotive exhaust systems and mufflers, small structures, machine components, and other parts requiring elevated-temperature oxidation resistance at low cost.
Typical values, annealed condition, per EN reference data.
| Property | Value | Unit |
|---|---|---|
| Density | 7.7 | g/cm³ |
| Melting range | 1480–1530 | °C |
| Elastic modulus | 220 | GPa |
| Coefficient of thermal expansion (20–100 °C) | 10.5 | µm/m·°C |
| Thermal conductivity (20 °C) | 25.0 | W/m·K |
| Specific heat (20 °C) | 460 | J/kg·K |
| Structure | Ferritic | — |
Specified per EN 10088-2 (W.Nr. 1.4512, X2CrTi12).
| Element | Symbol | Min % | Max % | Role in Alloy |
|---|---|---|---|---|
| Iron | Fe | Balance | — | Base element |
| Chromium | Cr | 10.5 | 12.5 | Corrosion / oxidation resistance |
| Titanium | Ti | 6×(C+N) | 0.65 | Stabiliser; ties up C and N |
| Manganese | Mn | — | 1.00 | Deoxidiser |
| Silicon | Si | — | 1.00 | Deoxidiser |
| Carbon | C | — | 0.030 | Low (stabilised, weldability) |
| Nitrogen | N | — | 0.030 | Low (stabilised) |
| Phosphorus | P | — | 0.040 | Residual impurity |
| Sulphur | S | — | 0.015 | Residual impurity |
Nominal: 11Cr titanium-stabilized low-carbon ferritic stainless steel.
Annealed (+A) condition, per EN 10088-2 for W.Nr. 1.4512.
| Condition | Property | Value |
|---|---|---|
| Annealed | Tensile strength (Rm) | 380–560 MPa |
| Annealed | 0.2% proof strength (Rp0.2) | ≥210 MPa |
| Annealed | Elongation (A5) | ≥25 % |
| Annealed | Hardness | ≤180 HB |
| — | Elastic modulus | 220 GPa |
Values per EN 10088-2; confirm against the inspection certificate (EN 10204).
| Environment | Performance | Notes |
|---|---|---|
| Atmospheric / general | Good | Far superior to carbon and low-alloy steels |
| Flue gas / exhaust | Very Good | Resists thickness loss; muffler-grade |
| Oxidation | Good | Useful to ~600 °C continuous |
| Chloride stress-corrosion cracking | Very Good | Ferritic — largely immune |
| Strong acids / salts | Limited | Below austenitic grades |
Corrosion resistance is well above carbon steel and adequate for exhaust and mildly corrosive service; not resistant to many salts, acids or bases.
A ferritic grade; cannot be hardened by heat treatment. Properties are set by annealing.
Anneal Heat to approximately 790–900 °C and cool in air. Post-weld annealing improves weld ductility. Avoid prolonged exposure that promotes grain growth or 475 °C embrittlement.
Weldable, but sensitive to grain-growth embrittlement at high heat input; weld with low heat input (below about 1 kJ/mm). Titanium stabilization limits sensitisation.
| Welding Process | Applicability | Filler / Consumable |
|---|---|---|
| GTAW / TIG | Acceptable | Matching ferritic or austenitic (more ductile) |
| GMAW / MIG | Acceptable | Matching or austenitic filler |
| Resistance / seam | Good | — |
Avoid hydrogen- or nitrogen-bearing shielding gas (titanium addition); keep heat input low.
Machining Guidelines
| Parameter | Recommendation |
|---|---|
| Machinability | Good; similar to other ferritic grades |
| Work hardening | Low rate — good formability |
| Coolant | Ample flood coolant |
Forming Processes
| Process | Notes |
|---|---|
| Cold forming | Good — roll forming, bending, mild pressing |
| Hot forming | ~1100–800 °C; anneal afterward |
| Industry | Typical Components | Key Requirements |
|---|---|---|
| Automotive | Exhaust systems, mufflers | Oxidation resistance + low cost |
| Mechanical engineering | Small structures, machine components | Formability + corrosion resistance |
| Construction | Mildly corrosive structural parts | Cost-effective stainless |
| Appliances | Household components | Corrosion resistance |
| Product Form | DIN / EN Standard | Notes |
|---|---|---|
| Plate, sheet and strip | EN 10088-2 · W.Nr. 1.4512 | X2CrTi12 |
| Bar, rod and sections | EN 10088-3 · W.Nr. 1.4512 | — |
| Welded tube | EN 10296-2 · W.Nr. 1.4512 | — |
| Technical delivery | SEW 400 | — |
Titanium-stabilized low-carbon ferritic stainless steel. W.Nr. 1.4512 (X2CrTi12).
| EN Symbol | Cr % | Ti / Nb | C % | Best Used For |
|---|---|---|---|---|
| X2CrTi12 | 10.5–12.5 | Ti | ≤0.03 | Muffler-grade ferritic; automotive exhaust |
| X2CrNi12 | 10.5–12.5 | — | ≤0.03 | Utility ferritic; structural |
| X6Cr17 | 16–18 | — | ≤0.08 | General ferritic; trim, appliances |
| X3CrTi17 | 16–18 | Ti | ≤0.05 | 17Cr-Ti stabilized ferritic (430Ti) |
| X2CrTiNb18 | 17.5–18.5 | Ti + Nb | ≤0.03 | 18Cr stabilized ferritic (441) |




