PROPRIETARY NAS 455 Stainless steels

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

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Latest Update: 2025-09
Total number of updates: 1
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PROPRIETARY NAS 455 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.15
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
12.00 – 14.00
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
≤ 0.50
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
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

North American Stainless, Product Data Sheets,

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PROPRIETARY NAS 455 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 215 GPa
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Density
7.61 — 8.1 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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PROPRIETARY NAS 455 Heat Treatments

  • Full annealing: Metal should be heated to 843°C (1550°F) - 899°C (1650°F), held for 1/2 hour per 25.4 mm of thickness and furnace cooled to 10°C (50°F) per hour maximum to 593°C (1100°F), then cooled in air, water or oil.
    Tempering: After hardening, tempering in the range of 204°C (400°F) - 760°C (1400°F) for from 1 to 4 hours will allow the steel to meet a wide range of mechanical properties. Tempering in the range of 399°C (750°F) - 579°C (1075°F) is generally not recommended because of reduced corrosion resistance and impact strength.
    Hardening: air cooling or oil quenching from 954°C (1750°F) - 1010°C (1850°F). Oil quenching is preferred for better impact properties.

PROPRIETARY NAS 455 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
620 — 758 MPa
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Elongation, A
15 — 18 %
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Reduction of Area
val1
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%
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Rockwell Hardness (HR)
val1
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Yield Strength, Rp0.2
551 — 586 MPa
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  • -Cross References
  • 8Composition
  • 11Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 1Total Suppliers