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HF

ACI/CAST
GRADE
CAST ASTM CAST EN/DIN CAST UNS WROUGHT
UNS
WROUGHT
GRADE
HF A297 - - - AISI 302
CHEMICAL COMPOSITION (wt%, TYPICAL VALUES)
C Cr Ni Si Other
0.30 20.5 10.0 1.8 -
CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Rp0.2[MPa] Rm [MPa] A % Hardness [HB] Impact [J]
240 485 25 - -
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
- 40 19 9 2 - 40 25 12 5 - -
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]
Austeniter, Carbides 7.75 19 14.4 586 1400
WORKING CONDITIONS / FABRICATION
Heat Treatment Max working T in air [°C] Machinability [100 = CF8M] Patternmaker’s Shrinkage [%]
As Cast 870 - 2.4
Categoria: Fe-Cr-Ni
ACI/CAST
GRADE
HF
CAST ASTM A297
CAST EN/DIN -
CAST UNS -
WROUGHT
UNS
-
WROUGHT
GRADE
AISI 302
CHEMICAL COMPOSITION (wt%, TYPICAL VALUES)
C 0.30
Cr 20.5
Ni 10.0
Si 1.8
Other -
CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Rp0.2[MPa] 240
Rm [MPa] 485
A % 25
Hardness [HB] -
Impact [J] -
CREEP LIMIT
Creep limit 1% 10.000 hours MPa at °C
600 -
700 40
800 19
900 9
1000 2
1100 -
Creep strength for 100.000 hours MPa at °C
600 40
700 25
800 12
900 5
1000 -
1100 -
PHYSICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED)
Microstructure Austeniter, Carbides
ρ [kg/dm3] 7.75
α [μm/m∙K] (20 - 100 °C) 19
K [W/m∙K] 14.4
Cp [J/kg∙K] 586
Melting ΔT [°C] 1400
WORKING CONDITIONS / FABRICATION
Heat Treatment As Cast
Max working T in air [°C] 870
Machining -
Patternmaker’s Shrinkage [%] 2.4

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