Material 1.4550

Stainless steel

Grade 1.4550 is an austenitic additionally niobium alloyed stainless steel. Niobium is being used for stabilization. As a consequence it is very intergranular corrosion resistant. 1.4550 can often be found in the chemical industry as well as the power plant construction.

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Standards

HDIN / EN	US-Standard	AFNOR	UNI	JIS	request
X6CrNiTi18-Nb18-10	AISI 347 UNS S34700		X6CrNiNb1811 X6CrNiNb1811KG X6CrNiNb1811KW X6CrNiNb1811KT	SUS347 SUS347FB SUS347HFB SUS347HTB SUS347HTF SUS347HTP SUS347TB SUS347TF SUS347TKA SUS347TP SUSF347 SUSY347	request

Material Category: Stainless steel

Chemical Composition

C %	Si %	Mn %	P %	S %	Cr %	Ni %	-
max 0,08	max 1,00	max 2,00	max 0,045	max 0,015	17,00 - 19,00	9,00 - 12,00	Nb 10xC <= 1,00

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	>= 205 N/mm²	>= 240 N/mm²	510 - 740 N/mm²		>= 50 %	<= 230 HB 30		längs
	>= 118 N/mm² / ~ 550 ° C
	>= 119 N/mm² / ~ 500 ° C
	>= 121 N/mm² / ~ 450 ° C
	>= 125 N/mm² / ~ 400 ° C
	>= 130 N/mm² / ~ 350 ° C
	>= 136 N/mm² / ~ 300 ° C
	>= 145 N/mm² / ~ 250 ° C
	>= 155N/mm² / ~ 200 ° C
	>= 165 N/mm² / ~ 150 ° C
	>= 175 N/mm² / ~ 100 ° C

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