28Cr/48Ni/5W - Fondinox

ACI/CAST GRADE	CAST ASTM	CAST EN/DIN	CAST UNS	WROUGHT UNS	WROUGHT GRADE
28Cr/48Ni/5W	–	2.4879 GNiCr28W	–	–	–

CHEMICAL COMPOSITION (wt%, TYPICAL VALUES)
C	Cr	Ni	Si	Other
0.42	28.5	48.5	1.3	4.75W

CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Rp_0.2[MPa]	Rm [MPa]	A %	Hardness [HB]	Impact [J]
220	400	3	–	–

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
–	70	55	24	11	4.5	–	73	50	24	11	4

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	8.30	–	–	–	–

WORKING CONDITIONS / FABRICATION
Heat Treatment	Max working T in air [°C]	Machinability [100 = CF8M]	Patternmaker’s Shrinkage [%]
As Cast	1150	–	2.2

CHEMICAL COMPOSITION (wt%, TYPICAL VALUES)
Categoria:	Nickel and Cobalt Base
ACI/CAST GRADE	28Cr/48Ni/5W
CAST ASTM	–
CAST EN/DIN	2.4879 GNiCr28W
CAST UNS	–
WROUGHT UNS	–
WROUGHT GRADE	–
C	0.42
Cr	28.5
Ni	48.5
Si	1.3
Other	4.75W
CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Rp_0.2[MPa]	220
Rm [MPa]	400
A %	3
Hardness [HB]	–
Impact [J]	–
CREEP LIMIT
Creep limit 1% 10.000 hours MPa at °C
600	–
700	70
800	55
900	24
1000	11
1100	4.5
Creep strength for 100.000 hours MPa at °C
600	–
700	73
800	50
900	24
1000	11
1100	4
PHYSICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Microstructure	Austenitic, Carbides
ρ [kg/dm³]	8.30
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 [%]	2.2