AFNOR NF 15 MDV 4.05 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: France / AFNOR NF

Data updates

Latest Update: 2022-05
Total number of updates: 2
Update History
2020-03

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AFNOR NF 15 MDV 4.05 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.18
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
≤ 0.30
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
≤ 0.25
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
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
CRITERIA
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2

NF A 36-602: 1988 / Weldable steel forgings for boilers and pressure vessels. Mo, Mn-Mo and Cr-Mo alloy steels. Grades and types

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AFNOR NF 15 MDV 4.05 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 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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Poisson Coefficient
val1
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This material has 124 properties — only a subset is shown here.

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AFNOR NF 15 MDV 4.05 Heat Treatments

  • Austenitized: 875-925°C Tempered: <= 600°C
  • Normalized: 875 - 925°C, air or water cooled. Tempered: 600 - 675°C.
    Stress relief at 600 - 640°C. Duration 2 min/mm up to 60 mm thick + 0.5 min/mm after that.
    Cooling at a rate of 55°C/h to 300°C, then air cooling.

AFNOR NF 15 MDV 4.05 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
510 — 650 MPa
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Elongation, A
≥ 19 %
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Impact Strength
val1
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kJ/m²
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Yield Strength, Rp0.2
val1
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MPa
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Impact Energy
val1
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J
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  • -Cross References
  • 30Composition
  • 44Mechanical Properties
  • 39Physical Properties
  • 3Heat Treatment
  • -Metallography
  • -Machinability
  • 6Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • 1Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 1Total Suppliers