PROPRIETARY Star-Max Tool Steel Tool steels

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

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PROPRIETARY Star-Max Tool Steel Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.8100
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
≤ 4.0000
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Fe
VALUE
Balance
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
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 Star-Max Tool Steel Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.72 — 8 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 20 properties — only a subset is shown here.

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PROPRIETARY Star-Max Tool Steel Heat Treatments

  • Normalizing is not recommended; Annealing: Pack in a suitable container with clean cast iron borings, heat uniformly to 843/871°C, then cool slowly in the furnace to 649°C at a rate of 11/22°C per hour. Average Brinell hardness 207/248. To relieve machining stresses for greater accuracy in hardening, first rough machine, then anneal below 677/704°C and cool slowly. Finish machine the material after cooling. Hardening: preheat to 760/816°C, then transfer to a superheating furnace with the temperature maintained at 1177/1204°C. When neutral salt baths are used for hardening, the temperature should be dropped 14°C as compared to other furnace temperatures. Quench in oil and be sure that tools are cooled below 93°C before tempering. Tempering: For best results with most tools, a range of 538/649°C is suggested. For cutting tools, double or triple temper at 538/566°C where max. wear resistance is desired.

PROPRIETARY Star-Max Tool Steel Mechanical Properties

Temperature

PROPERTY / VALUE
Rockwell Hardness (HR)
≥ 58
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  • -Cross References
  • 8Composition
  • 7Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 1Total Suppliers