GB 20MnK Type 25U Structural and constructional steels
Material group:
Ferrous Alloys / Structural and constructional steels
Country/Standard:
China / GB
Data updates
Latest Update: 2017-12
Total number of updates: 1
Update History
This material has 24 properties — only a subset is shown here.
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GB 20MnK Type 25U Chemical Composition
CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
≥ 0.0150
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
C
VALUE
0.1500 – 0.2600
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
≤ 0.3000
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
val1
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UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
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
GB/T 4697: 2017 / Hot-rolled steel section for mine timbering
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GB 20MnK Type 25U Physical Properties
Temperature
Modulus of Elasticity
190 — 210
GPa
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Density
7.67 — 7.86
kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 24 properties — only a subset is shown here.
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GB 20MnK Type 25U Mechanical Properties
Temperature
Yield Strength, Rp0.2
390
MPa
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Tensile Strength
570
MPa
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Elongation, A
20
%
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7 Cross References
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10 Composition
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3 Mechanical Properties
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3 Physical Properties
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- Heat Treatment
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- Metallography
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- Machinability
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- Stress-Strain
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1 Formability
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- Fatigue
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- Fracture
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- Creep
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- Joints
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- Coatings
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- Dimensions
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- Tribology
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- Corrosion
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- Ageing
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- Weatherability
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- Irradiation
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- Total Suppliers