Ferralium® 255 – 3SC is a super duplex stainless steel supplied in cast form. As a 25% Cr alloy, with significant additions of Cu, it offers excellent corrosion resistance in a wide variety of corrosive chemicals including sulphuric, nitric and phosphoric acid. When submerged in seawater and other bodies of liquid containing chloride, it also provides outstanding resistance to pitting and crevice corrosion, with a critical pitting temperature exceeding 50°C.
Excellent ductility and impact strength at both ambient and sub-zero temperatures combine with a high resistance to abrasion, erosion and cavitation erosion.
|0.2% Proof Stress||450 N/mm2||65.3 ksi|
|Tensile Strength||700 N/mm2||101.5 ksi|
|Elongation, 5.65√S0 and 4D||25%|
|Reduction of Area|
|Hardness (Brinell)||270 max|
|Impact Strength (Room Temp)||70J||51.6 ft.lb|
|Magnetic Permeability (20°C)||33|
|Young’s Modulus (kN/mm2)||199|
|Specific Electrical Resistance, 20°C (µΩ-m)||0.8|
|Mean coefficient of thermal expansion, 20-100°C (m/m/degC)||11.1 x 10-6|
|Specific Heat, 20°C (J/kg.K)||475|
|Thermal conductivity, 20°C (W/m.K)||14.2|
|Fracture Toughness, KQ (MPa/m2)||98|