SUPER DUPLEX 1.4501

1.4501 is austenitic-ferritic, high-alloy, low-carbon chromium-nickel-molybdenum-tungsten (super duplex) steel that can be used for chloride-containing environments when conventional duplex steels are no longer sufficient. PREN (1) values are between 40 and 46 J and have good impact values and wear resistance properties at -40 ° C. For this reason, it is preferred in the petroleum and chemical industry. 1.4501 is resistant to sea water, has high resistance to surface as well as cavitation and crevice corrosion and is suitable for use in sulfuric acid.

Scope of application

The main applications of this stainless steel are in the chemical and petrochemical industry, among others. Other applications include seawater applications, food technology and shipbuilding (chemical tanker construction).

(1) PRE or PREN values are used to compare corrosion resistance between stainless steels. Both of these are referred to as Pitting speed equivalents. This value is

PRE = PREN = [% Cr] + 3.3 [Mo] + 16 [% N].

PREN value of 40 and above is preferred for steels to be used in the chemical and petroleum industry.

Duplex steels are divided into two groups:

Standard-Duplex (z.B. 1.4462): Most common with over 20% chromium, about 5% nickel and about 3% molybdenum.

Super Duplex (z.B. 1.4410 and 1.4501): Suitable for demanding applications, contains higher chromium content, nickel content and molybdenum.

Chemical Composition

C %	Sİ %	Mn %	P %	S %	Cr %	Mo %	Ni %	Cu %	Nb %

Mechanical Properties 20°C

Hardness HB	%0,2 Yield Strength N/mm2	Tensile Strength N/mm2	Elongation %	Modulus of Elasticity kN/mm²

Physical Properties 20°C

Density g/cm³	Specific Heat Capacity J/kg K	Thermal Conductivity W/m K	Electric Resistance Ω mm²/m