G21Mn5 (Germany / SEW) Material Properties

Other designations:
Material group: Ferrous Alloys / Cast steels
Country/Standard: Germany / SEW

Data updates

Latest Update: 2021-10
Total number of updates: 3
Update History:
2018-12 2017-01

Mechanical Properties

Temperature

≤ 0°C
0 - 30°C
PROPERTY / VALUE
Yield Strength, Rp0.2 300 MPa view details
Tensile Strength 480 — 620 MPa view details
Elongation, A 20 % view details
Impact Energy val1
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J view details
Impact Energy val1
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J view details
Yield Strength, Rp0.2 43.5 ksi view details
Tensile Strength 69.6 — 89.9 ksi view details
Elongation, A 20 % view details
Impact Energy val1
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ft·lb view details
Impact Energy val1
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ft·lb view details

Physical Properties

Temperature

≤ 0°C
0 - 30°C
PROPERTY / VALUE
Density 7.85 kg/dm³ view details
Coefficient of Thermal Expansion (CTE) 9 — 11.8 10-6/°C view details
Thermal Conductivity 45 W/(m∙°C) view details
Density 0.284 lb/in³ view details
Coefficient of Thermal Expansion (CTE) 5 — 6.56 10-6/°F view details
Thermal Conductivity 26 BTU/(h∙ft∙°F) view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.17 – 0.23
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
≤ 0.30
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
1.10 – 1.30
UNIT
%
CAS NUMBER
7439-96-5
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

SEW 685: 2019 / Cryogenic steel casting/steel castings having high impact strength at low temperatures - Technical delivery conditions

Heat Treatments

  • (+N): Austenitized or solutionized at 900-940°C, cooled in air, water or polymer.<br>(+QT): Austenitized or solutionized at 900-940°C, cooled in air, water or polymer. Annealed at 620-660°C