A 958 Grade SC 8620 Class 80/50 (United States / ASTM) Material Properties

Material group: Ferrous Alloys / Cast steels
Country/Standard: United States / ASTM

Data updates

Latest Update: -
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Update History:
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Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Yield Strength, Rp0.2 345 MPa view details
Tensile Strength 550 MPa view details
Elongation, A 22 % view details
Reduction of Area val1
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Yield Strength, Rp0.2 50 ksi view details
Tensile Strength 79.8 ksi view details
Elongation, A 22 % view details
Reduction of Area val1
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Physical Properties

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Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.18 – 0.23
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.40 – 0.60
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.60 – 1.00
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

A958/A958M: 2024 / Standard Specification for Steel Castings, Carbon and Alloy, with Tensile Requirements, Chemical Requirements Similar to Standard Wrought Grades

Heat Treatments

  • Austenitizing at min. 925°C (1700°F); Air cool (normalize) or liquid quench; Tempering at min. 620°C (1150°F); Post-weld heat treatment must be at or below the final tempering temperature; Following quenching the castings must be cooled below 260°C (500°F) prior to tempering.