Material 1.4460

Duplex Superduplex

1.4460 is an austenitic ferritic stainless steel. It belongs to the group of superduplex steels. Its two phased microstructure combines the positive characteristics and ferritic stainless steels. These characteristics result in a high corrosion-resistance and high strength values. Often parts for valves and pumps are being produced out of 1.4460.The PREN-value of 1.4460 is ranged between 30,09 and 37,80 %. The PREN-value indicates the corrosion-resistance of a stainless steel. Starting at 32 % a steel is considered resistant against sea water. The PREN-value can be reached with the formula: %Cr + 3,3xMO + 16x%N

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1.4460

Standards

HDIN / EN US-Standard AFNOR UNI JIS request
X3CrNiMoN27-5-2 X4CrNiMoN2752 AISI 329 UNS S32900 SUS329J1 SUS329J1FB SUS329J1TB SUS329J1TB SUS329J1TP request

Material Category: Duplex Superduplex

Chemical Composition

C % Si % Mn % P % S % Cr % Mo % N % Ni %
max 0,05 max 1,00 max 2,00 max 0,035 max 0,015 25,00 - 28,00 1,30 - 2,00 0,050 - 0,200 4,50 - 6,50

 

Mechanical Properties

lösungsgeglüht 0,2% Dehngrenze (Rp0,2) /
bei Temperatur		 Zugfestigkeit (Rm) Bruchdehnung (A5, 65) Härte [HB 30] Kerbschlagarbeit
KV (ISO-V/Charpy-V)		 Probenlage
<= 160 mm >= 450 N/mm² 620 - 880 N/mm² >= 20 % <= 260 HB 30 >= 85 Joule längs
  >= 295 N/mm² / ~ 250 ° C          
  >= 310 N/mm² / ~ 200 ° C          
  >= 335 N/mm² / ~ 150 ° C          
  >= 360 N/mm² / ~ 100 ° C          

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