PROPRIETARY BÖHLER M398 MICROCLEAN Stainless steels

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

Data updates

Latest Update: 2022-09
Total number of updates: 1
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This material has 22 properties — only a subset is shown here.

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PROPRIETARY BÖHLER M398 MICROCLEAN Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
2.7
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
20
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.5
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
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
CRITERIA
W
VALUE
val1
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UNIT
%
CAS NUMBER
7440-33-7

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PROPRIETARY BÖHLER M398 MICROCLEAN Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 231 GPa
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Thermal Conductivity
15.2 W/(m∙°C)
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Density
7.46 — 8.1 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 22 properties — only a subset is shown here.

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PROPRIETARY BÖHLER M398 MICROCLEAN Heat Treatments

  • Stress relieving: 650°C (1202°F), After through-heating, soak for 4 hours in a neutral atmosphere. Furnace cooling down to 300°C (570°F), followed by air. After hardening and tempering, stress relieving has to be performed 50°C (122°F) below last tempering temperature.

    Hardening and tempering: 1120-1180°C (2048-2156°F); For hardening hold at temperature for 20 to 30 min (for hardening temperature 1180°C/2156°F 5-10 min). An optional sub-zero treatment at -80°C/-112°F can be applied after hardening. For highest corrosion resistance, temper once for a minimum of 2h at 200-300°C (392-572°F). For best wear resistance, temper twice for a minimum of 2h at 540-560°C (1004-1040°F) (without sub-zero treatment) or 510-530°C (950-986°F) (with sub-zero treatment). After each heat treatment step, material should be cooled down to approx. 30°C.

PROPRIETARY BÖHLER M398 MICROCLEAN Mechanical Properties

Temperature

PROPERTY / VALUE
Brinell Hardness (HB)
≤ 330
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  • -Cross References
  • 7Composition
  • 1Mechanical Properties
  • 12Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 1Total Suppliers