Data Sheets

Stainless Steel   |   Ferritic

1.4512 Sheet

Commercial409 EN1.4512

Grade 409 / 1.4512 titanium stabilised ferritic stainless steel is often referred to as 'muffler grade stainless steel' since the major bulk usage of this material is for automotive exhaust systems.

Chemical Composition

EN 10088-2:2005
1.4512 Steel
Chemical Element % Present
Iron (Fe) balance
Sulphur (S) 0.02 max
Phosphorous (P) 0.04 max
Carbon (C) 0.3 max
Titanium (Ti) 0.65 max
Manganese (Mn) 1 max
Silicon (Si) 1 max
Chromium (Cr) 10.5 - 12.5

Supplied Forms

Grade 409 / 1.4512 is a rolled product (sheet, coil and strip) material usually available up to a maximum of 2.5mm thickness. Grade 1.4003 is similar though not a direct equivalent but is available in thicker sheets and plates.

  • Sheet

Generic Physical Properties

Physical Property Value
Density 7.6 g/cm³
Modulus of Elasticity 208 GPa
Thermal Conductivity 25.8 W/m.K
Electrical Resistivity 0.6 x10^-6 Ω .m

Mechanical Properties

EN 10088-2:2005
Sheet - Up to 8mm Thick
Mechanical Property Value
Proof Stress 210 Min MPa
Tensile Strength 380 - 560 MPa
Elongation A50 mm 25 Min %


Weldability of grade 409 is good up to about 2.5mm thick. 

If welding of thicker material is necessary, then grade 1.4003 should be selected.