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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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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