253MA® - Fondinox

ACI/CAST GRADE	CAST ASTM	CAST EN/DIN	CAST UNS	WROUGHT UNS	WROUGHT GRADE
253MA®	–	1.4893 X8CrNiN	–	–	253MA®

CHEMICAL COMPOSITION (wt%, TYPICAL VALUES)
C	Cr	Ni	Si	Other
<0.20	21.0	11.0	1.7	Ce

CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Rp_0.2[MPa]	Rm [MPa]	A %	Hardness [HB]	Impact [J]
260	530	10	–	–

CREEP LIMIT
Creep limit 1% 10.000 hours MPa at °C						Creep strength for 100.000 hours MPa at °C
600	700	800	900	1000	1100	600	700	800	900	1000	1100
–	55	28	16	7	1.5	–	50	26	14	6	–

PHYSICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Microstructure	ρ [kg/dm³]	α [μm/m∙K] (20 – 100 °C)	K [W/m∙K]	Cp [J/kg∙K]	Melting ΔT [°C]
Austenitic, Carbides	7.75	–	–	–	–

WORKING CONDITIONS / FABRICATION
Heat Treatment	Max working T in air [°C]	Machinability [100 = CF8M]	Patternmaker’s Shrinkage [%]
As Cast	1150	–	2.4

CHEMICAL COMPOSITION (wt%, TYPICAL VALUES)
Categoria:	Fe-Cr-Ni
ACI/CAST GRADE	253MA®
CAST ASTM	–
CAST EN/DIN	1.4893 X8CrNiN
CAST UNS	–
WROUGHT UNS	–
WROUGHT GRADE	253MA®
C	<0.20
Cr	21.0
Ni	11.0
Si	1.7
Other	Ce
CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Rp_0.2[MPa]	260
Rm [MPa]	530
A %	10
Hardness [HB]	–
Impact [J]	–
CREEP LIMIT
Creep limit 1% 10.000 hours MPa at °C
600	–
700	55
800	28
900	16
1000	7
1100	1.5
Creep strength for 100.000 hours MPa at °C
600	–
700	50
800	26
900	14
1000	6
1100	–
PHYSICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Microstructure	Austenitic, Carbides
ρ [kg/dm³]	7.75
α [μm/m∙K] (20 – 100 °C)	–
K [W/m∙K]	–
Cp [J/kg∙K]	–
Melting ΔT [°C]	–
WORKING CONDITIONS / FABRICATION
Heat Treatment	As Cast
Max working T in air [°C]	1150
Machining	–
Patternmaker’s Shrinkage [%]	2.4