ASME SA-351 Grade CK20 Cast steels

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

Data updates

Latest Update: 2024-02
Total number of updates: 4
Update History
2024-01 2023-11 2023-10

This material has 253 properties — only a subset is shown here.

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ASME SA-351 Grade CK20 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.04 – 0.20
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
23.0 – 27.0
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
≤ 1.50
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

ASME Boiler and Pressure Vessel Code An International Code Section II - Part A Ferrous Material Specifications, American Society of Mechanical Engineers, 2025

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ASME SA-351 Grade CK20 Physical Properties


Temperature

PROPERTY / VALUE
Modulus of Elasticity
195 GPa
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Thermal Conductivity
val1
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W/(m∙°C)
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Coefficient of Thermal Expansion (CTE)
val1
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10-6/°C
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This material has 253 properties — only a subset is shown here.

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ASME SA-351 Grade CK20 Heat Treatments


  • Heated at 1150°C (2100°F), followed by quenching in water or rapid cooling by other means.

ASME SA-351 Grade CK20 Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
≥ 450 MPa
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Elongation, A
val1
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%
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Yield Strength, Rp0.2
val1
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MPa
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ASME SA-351 Grade CK20 International Equivalent Materials


Showing 13 of 13 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ACI
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
STANDARD
NMX
COUNTRY / PRODUCER
Mexico
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
GB
COUNTRY / PRODUCER
China
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
STANDARD
JIS
COUNTRY / PRODUCER
Japan
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
ABS
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
KS
COUNTRY / PRODUCER
Korea
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
UNS
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit

Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.

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See all 13 equivalent grades with detailed mapping by standard, producer and equivalence category.

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  • 13Cross References

  • 8Composition
  • 38Mechanical Properties
  • 80Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

  • 1Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • 104Creep

  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology

  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation

  • 8Total Suppliers