Material 1.4438

Stainless steel

1.4438 is an austenitic stainless steel. The high content of molybdenum is responsible for its resistance to reducing acids as well as chloride containing mediums. This grade can often be found in the chmical plant industry.

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1.4438

Standards

HDIN / EN US-Standard AFNOR UNI JIS request
X2CrNiMo18-15-4 X2CrNiMo1864 AISI 317L UNS S31703 X2CrNiMo1815 SUS317L SUS317LFB SUS317LTB SUS317LTP SUSF317L SUSY317L request

Material Category: Stainless steel

Chemical Composition

C % Si % Mn % P % S % Cr % Mo % N % Ni %
max 0,03 max 1,00 max 2,00 max 0,045 max 0,015 17,50 - 19,50 3,00 - 4,00 max 0,100 13,00 - 16,00

 

Mechanical Properties

lösungsgeglüht 0,2% Dehngrenze (Rp0,2) /
bei Temperatur		 1% Dehngrenze (Rp1,0) Zugfestigkeit (Rm) Bruchdehnung (A5, 65) Einschnürung (Z) Härte [HB 30] Kerbschlagarbeit
KV (ISO-V/Charpy-V)		 Probenlage
<= 160 mm       >= 40 %     >= 100 Joule längs
160 - 250 mm       >= 30 %     >= 60 Joule quer
<= 250 mm >= 200 N/mm² >= 235 N/mm² 580 - 700 N/mm²   >= 60 % <= 215 HB 30   längs
  >= 108 N/mm² / ~ 550 ° C              
  >= 110 N/mm² / ~ 500 ° C              
  >= 112 N/mm² / ~ 450 ° C              
  >= 115 N/mm² / ~ 400 ° C              
  >= 120 N/mm² / ~ 350 ° C              
  >= 127 N/mm² / ~ 300 ° C              
  >= 137 N/mm² / ~ 250 ° C              
  >= 147 N/mm² / ~ 200 ° C              
  >= 157 N/mm² / ~ 150 ° C              
  >= 172 N/mm² / ~ 100 ° C              

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