SA-278 Class No. 275 (United States / ASME) Material Properties

Material group: Ferrous Alloys / Cast irons
Country/Standard: United States / ASME

Data updates

Latest Update: 2024-01
Total number of updates: 3
Update History:
2023-11 2020-02

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Tensile Strength 275 MPa view details
Tensile Strength 275 MPa view details

Physical Properties

Temperature

0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Density 7.2 kg/dm³ view details
Poisson Coefficient 0.29 view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Thermal Conductivity 60.4 W/(m∙°C) view details
Thermal Conductivity val1
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W/(m∙°C) view details
Thermal Conductivity val1
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W/(m∙°C) view details
Thermal Conductivity val1
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W/(m∙°C) view details
Density 7.2 kg/dm³ view details
Poisson Coefficient 0.29 view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Thermal Conductivity 60.4 W/(m∙°C) view details
Thermal Conductivity val1
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W/(m∙°C) view details
Thermal Conductivity val1
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W/(m∙°C) view details
Thermal Conductivity val1
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W/(m∙°C) view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
CEV
VALUE
≤ 3.8
UNIT
%
CAS NUMBER
CRITERIA
P
VALUE
≤ 0.25
UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
≤ 0.12
UNIT
%
CAS NUMBER
7704-34-9

ASME Boiler and Pressure Vessel Code An International Code Section II - Part A Ferrous Material Specifications / American Society of Mechanical Engineers / 2023

Heat Treatments

  • Castings intended for use above 230°C (450°F) shall be stress relieved by placing them in a suitable furnace at a temperature not exceeding 200°C (400°F) and heating them uniformly to 565 - 650°C (1050 - 1200°F) for a minimum of 2 h and a maximum of 12 h.<br>Castings which are to be used at temperatures below 230°C (450°F), may be heat treated in accordance with above or they shall be cooled in the mold to 250°C (480°F) at an average rate of not more than 50°C/h (90°F/h) for castings up to 25 mm in section. For heavier sections the maximum cooling rate in degrees Celsius per hour shall be 1250 divided by the maximum section thickness.