PROPRIETARY 430DDQ Stainless steels

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

Data updates

Latest Update: 2025-07
Total number of updates: 1
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This material has 51 properties — only a subset is shown here.

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PROPRIETARY 430DDQ Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
≤ 0.30
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
C
VALUE
≤ 0.08
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
16.0 – 18.0
UNIT
%
CAS NUMBER
7440-47-3
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

Columbus Stainless (Pty) Ltd, Product Data Sheets,

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PROPRIETARY 430DDQ Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 215 GPa
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Electrical Resistivity
0.6 Ω∙mm²/m
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Density
val1
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kg/dm³
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Electrical Conductivity
val1
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S/m
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Heat Capacity
val1
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J/(kg∙°C)
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Melting Temperature
val1
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°C
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Poisson Coefficient
val1
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Torsional Modulus
val1
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GPa
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This material has 51 properties — only a subset is shown here.

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PROPRIETARY 430DDQ Heat Treatments

  • Annealing is achieved by heating to between 750°C and 850°C for 90 minutes per 25 mm thickness (3.5 min/mm) followed by air quenching. Controlled atmospheres are recommended in order to avoid excessive oxidation of the surface.
    Stress relieving: after welding is not normally required. If it is necessary, temperatures between 200 - 300°C are recommended for 60 minutes per 25 mm of thickness (2.5 min/mm)

PROPRIETARY 430DDQ Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
450 — 630 MPa
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Brinell Hardness (HB)
val1
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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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  • 2Cross References
  • 8Composition
  • 22Mechanical Properties
  • 16Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • 1Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 1Total Suppliers