PROPRIETARY 254 SMO Stainless steels

Material group: Ferrous Alloys / Stainless steels
Country / Standard: PROPRIETARY

Data updates

Latest Update: 2023-07
Total number of updates: 3
Update History
2019-07 2016-11

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PROPRIETARY 254 SMO Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.020
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
20
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
0.7
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
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

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PROPRIETARY 254 SMO Physical Properties


Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 215 GPa
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Thermal Conductivity
val1
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W/(m∙°C)
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Density
val1
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kg/dm³
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Heat Capacity
val1
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J/(kg∙°C)
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Poisson Coefficient
val1
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This material has 461 properties — only a subset is shown here.

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PROPRIETARY 254 SMO Heat Treatments


  • Solution annealing at 1150-1200°C (2100-2190°F), quenching in water. Thinwalled tubes min. 1130°C (2060°F), quenching in air/water.
  • The tubes are delivered in heat treated condition. If additional heat treatment is needed due to further processing the following is recommended.

    Solution annealing at 1150-1200°C (2100-2190°F), quenching in water. Thin-walled tubes min. 1130°C (2060°F), quenching in air/water.

PROPRIETARY 254 SMO Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
550 — 850 MPa
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Elongation, A
≥ 35 %
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Yield Strength, Rp0.2
≥ 260 MPa
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Rockwell Hardness (HR)
val1
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Yield Strength, Rp1
val1
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MPa
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PROPRIETARY 254 SMO International Equivalent Materials


Showing 15 of 181 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
UNS
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
UNS
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official

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

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  • 181Cross References

  • 37Composition
  • 43Mechanical Properties
  • 63Physical Properties
  • 3Heat Treatment
  • -Metallography
  • -Machinability

  • 5Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep

  • 21Joints
  • -Coatings
  • -Dimensions
  • -Tribology

  • 1Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation

  • 107Total Suppliers