PROPRIETARY LSS L6 Tool steels

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

Data updates

Latest Update: 2025-03
Total number of updates: 1
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This material has 34 properties — only a subset is shown here.

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PROPRIETARY LSS L6 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.7000
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.7000
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.6000
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

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PROPRIETARY LSS L6 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Thermal Conductivity
34.615 W/(m∙°C)
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Density
7.72 — 8 kg/dm³
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Poisson Coefficient
val1
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This material has 34 properties — only a subset is shown here.

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PROPRIETARY LSS L6 Heat Treatments

  • HARDENING:
    - Critical Temperature: Ac1: 719°C (1325°F);
    Preheating: Heat at a rate not exceeding 222°C per hour (400°F per hour) to 621-677°C (1150-1250°F) and equalize.
    - Austenitizing (High Heat): Heat slowly from the preheat. Furnace or Salt: 788-816°C (1450-1500°F). Soak for 30 minutes for the first 25.4 mm of thickness, plus 15 minutes for each additional 25.4 mm.
    - Quenching: Oil to 66-51°C (150-125°F). Sizes under 76.2mm in cross section will achieve moderate hardness by cooling in a blast of air or pressurized gas.
    - Tempering: Temper immediately after quenching. Hold at temperature for 1 hour per 25.4 mm of thickness, 4 hours minimum, then air cool to ambient temperature. To minimize internal stresses in cross sections greater than 152.4 mm and to improve stability in tools that will be EDM’d after heat treatment, a soaking time of 8 to 10 hours at the tempering temperature is strongly recommended.
    - Cryogenic Treatment: It can be done as an extension of the quench from the austenitizing treatment or after tempering.
    ANNEALING:
    Annealing must be performed after hot working and before rehardening. Heat at a rate not exceeding 222°C per hour (400°F per hour) to 760°C (1400°F), and hold at temperature for 1 hour per 25.4mm of maximum thickness; 2 hours minimum. Then cool slowly with the furnace at a rate not exceeding 28°C per hour (50°F per hour) to 538°C (1000°F). Continue cooling to ambient temperature in the furnace or in air. For improved machinability, hold at 760°C (1400°F) for 1 hour per 25.4mm of maximum thickness; 2 hours minimum. Then cool slowly with the furnace cool from 760°C (1400°F) to 677°C (1250°F), hold for 8 hours, then air cool to ambient temperature.

PROPRIETARY LSS L6 Mechanical Properties

Temperature

PROPERTY / VALUE
Brinell Hardness (HB)
≤ 235
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Rockwell Hardness (HR)
62 — 64
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  • -Cross References
  • 10Composition
  • 6Mechanical Properties
  • 15Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 2Total Suppliers