Moda 4589
EN 1.4589, ASTM UNS S42035

General characteristics

Moda 4589 is a 14% chromium product with a small amount of niobium for elevated strength, making it suitable for structural parts exposed to loads that demand higher yield points.

Moda 4589 is a structural medium-chromium martensitic-ferritic stainless steel with enhanced wear resistance. Due to its chromium content and its molybdenum alloying, it can be used in many mildly corrosive environments. Because of its titanium content, Moda 4589 can be welded in all dimensions without becoming susceptible to intergranular corrosion.

Typical applications

  • Conveyor chains
  • Railroad cars


Product forms, available sizes and finishes


Product typeFinishesThicknessWidth
Cold rolled coil and sheet2B0,60-4,00≤ 1250
Hot rolled coil and plateHot rolled white3,50-7,00≤ 1250
Chemical composition


The typical chemical composition for this grade is given in the table below, together with composition limits given for the product according to different standards. The required standard will be fully met as specified on the order.

The chemical composition is given as % by mass.

TypicalModa 45890.0514.01.70.3Ti
ASTM A240/A240MUNS S42035<0.08<113.5-15.51-2.500.20-1.20Si:<1 P:<0.045 S:<0.030 Ti
EN 10088-21.4589<0.08<113.5-15.51-2.500.20-1.20Si:<1 P:<0.040 S:<0.015 Ti
Mechanical properties



StandardGradeRp0.2Rp1.0RmElongationImpact strengthRockwellHBHV
Product type: Cold rolled coil and sheet
Typical (thickness 1 mm)Moda 458947051060087HRB
Product type: Hot rolled coil and sheet
Typical (thickness 4 mm)Moda 458951055065012290

1)Elongation according to EN standard:
A80 for thickness below 3 mm.
A for thickness = 3 mm.
Elongation according to ASTM standard A2” or A50.

Corrosion resistance

Moda 4589 has good corrosion resistance in solutions of many halogen-free organic and inorganic compounds over a wide temperature and concentration range. It can withstand many sufficiently diluted organic and mineral acids depending on the temperature and concentration of the solution. Moda 4589 may suffer from uniform corrosion in strong organic and mineral acids as well as in hot concentrated alkaline solutions.

In aqueous solutions containing halogenides, e.g. chlorides or bromides, pitting and crevice corrosion may occur depending on the halogenide concentration, temperature, pH-value, concentration of oxidizing compounds, and crevice geometry, if applicable. The presence of corrosion-inhibiting or accelerating compounds like e.g. transition metal ions or organic compounds may influence the corrosion behavior of Moda 4589.

Moda 4589 can be used for indoor applications in environments where chloride contamination is low. The best material performance is usually reached with the help of adequate design, correct post-weld treatment, and regular cleaning during use (if applicable).

Due to its titanium content, the risk of sensitization to intergranular corrosion is strongly reduced when compared to non-stabilized ferritic grades.

For more information on corrosion resistance, please refer to the Outokumpu Corrosion Handbook or contact our corrosion experts.

Pitting corrosion resistanceCrevice corrosion resistance

PRE Pitting Resistant Equivalent calculated using the formula: PRE = %Cr + 3.3 x %Mo + 16 x %N
CPT Corrosion Pitting Temperature as measured in the Avesta Cell (ASTM G 150), in a 1M NaCl solution (35,000 ppm or mg/l chloride ions).
CCT Critical Crevice Corrosion Temperature is the critical crevice corrosion temperature which is obtained by laboratory tests according to ASTM G 48 Method F


Physical properties



DensityModulus of elasticityThermal exp. at 100 °CThermal conductivityThermal capacityElectrical resistanceMagnetizable



More detailed information concerning welding procedures can be obtained from the Outokumpu Welding Handbook, available from our sales offices.

Standards & approvals



ASTM A240/A240MUNS S42035
EN 10088-21.4589