PROPRIETARY Micro Melt HS-30 Tool steels

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

Data updates

Latest Update: 2025-06
Total number of updates: 1
Update History

This material has 41 properties — only a subset is shown here.

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PROPRIETARY Micro Melt HS-30 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
1.27
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Co
VALUE
8.50
UNIT
%
CAS NUMBER
7440-48-4
CRITERIA
Cr
VALUE
4.20
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Fe
VALUE
val1
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UNIT
%
CAS NUMBER
7439-89-6
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
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
CRITERIA
W
VALUE
val1
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UNIT
%
CAS NUMBER
7440-33-7

Carpenter Technology Corporation, Product Data Sheets,

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PROPRIETARY Micro Melt HS-30 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.72 — 8.221 kg/dm³
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Heat Capacity
418.68 J/(kg∙°C)
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Poisson Coefficient
val1
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Shear Modulus
val1
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GPa
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This material has 41 properties — only a subset is shown here.

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PROPRIETARY Micro Melt HS-30 Heat Treatments

  • Annealing: must be fully annealed after forging and before hardening. For full annealing heat uniformly to 871°C (1600°F), hold at temperature for two hours, cool slowly at 14°C (25°F) per hour maximum in the furnace to below 538°C (1000°F), and air cool to room temperature.
    Hardening: Two furnaces are used for hardening. One furnace is used to preheat the workpiece to 816 - 843°C (1500 - 1550°F), and the second is used to rapidly heat the workpiece from the preheating temperature to the hardening temperature of 1163 - 1204°C (2125 - 2200°F) for atmosphere furnaces or 1149 - 1191°C (2100 - 2175°F) for salt baths.
    Quenching: Quench in oil or a salt bath maintained at 538 - 593°C (1000 - 1100°F). An interrupted quench is recommended when oil quenching is used, particularly for workpieces of large sections or complicated design. The workpiece should be quenched in oil until it has reached approximately 538 - 593°C (1000 - 1100°F) (dull red color), removed from the oil and allowed to air cool to below 66°C (150°F) or until the workpiece can be touched comfortably with a bare hand. When a salt bath is used, the workpiece is quenched into the bath and held long enough to cool to the bath temperature. It is then removed from the bath and allowed to air cool to below 66°C (150°F) or until it can be touched comfortably with a bare hand. Salt bath quenching of large sections generally results in slightly lower hardness than an interrupted oil quench.
    Tempering: Tempering should be performed immediately after quenching and cooling of the workpiece below 66°C (150°F) or as soon as it can be touched comfortably with a bare hand. The tempering temperature may be varied depending on the application and desired hardness. Triple tempering is required. Typical tempering is performed at 552°C (1025°F) for two hours at temperature followed by air cooling to room temperature. This cycle is repeated twice to obtain triple tempering. Tempering below 538°C (1000°F) is not recommended.

PROPRIETARY Micro Melt HS-30 Mechanical Properties

Temperature

PROPERTY / VALUE
Brinell Hardness (HB)
255 — 285
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Rockwell Hardness (HR)
58 — 68
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  • -Cross References
  • 11Composition
  • 17Mechanical Properties
  • 11Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
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