PROPRIETARY Uddeholm Caldie Tool steels

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

Data updates

Latest Update: 2018-07
Total number of updates: 2
Update History
2016-04

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PROPRIETARY Uddeholm Caldie Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.7
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
5.0
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

Böhler-Uddeholm AG, Product Data Sheets,

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PROPRIETARY Uddeholm Caldie Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 213 GPa
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Density
val1
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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 47 properties — only a subset is shown here.

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PROPRIETARY Uddeholm Caldie Heat Treatments

  • Soft annealing: Protect the steel and heat through to 820°C (1510°F) wait for equalization of the temperature (equalization time related to the size of the tool). Then cool in the furnace at 10°C (20°F) per hour to 650°C (1200°F), then freely in air to room temperature;
    Stress relieving: After rough machining the residual stresses should be relieved by tempering at 650°C (1200°F), holding time 2 hr. Cool slowly in the furnace to 500°C (930°F), then freely in air to room temperature;
    Hardening: Preheating temperature: 600-650°C (1110–1200°F) and 850-900°C (1560-1650°F). In case of bigger dimensions (> 150 mm cross section) a third preheating step at 930°C (1700°F) is recommended. Austenitizing temperature: 1000-1050°C (1830-1920°F), normally 1020°C (1870°F), in case of bigger dimensions (>150 mm cross section) 1000°C (1830°F). Holding time: 30 min. after the tool is heated through. (Protect the part against decarburization and oxidation.);
    Quenching media: Vacuum (high speed gas with sufficient overpressure minimum 2 bar). Martempering bath or fluidized bed at approx. 200-550°C (390-1020°F), forced air/gas. Temper the tool as soon as its temperature reaches 50-70°C (120-160°F);
    Tempering: Choose the tempering temperature according to the hardness required by reference to the tempering graph below. Temper at least twice with intermediate cooling to room temperature. For high dimensional stability a minimum temperature of 540°C (1000°F) and three tempers is strongly recommended. If lowering the tempering temperature, it should not be below 520°C (970°F). When tempering twice the minimum holding time at temperature is 2 hours. When tempering three times the minimum holding time is 1 hour.
  • Austenitizing temperature 1025°C (1880°F). Holding time 30 mintues.

PROPRIETARY Uddeholm Caldie Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
2500 MPa
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Brinell Hardness (HB)
≤ 215
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Compression Yield Strength
val1
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MPa
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Elongation, A
3 %
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Rockwell Hardness (HR)
val1
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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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Reduction of Area
val1
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%
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  • -Cross References
  • 6Composition
  • 21Mechanical Properties
  • 12Physical Properties
  • 2Heat Treatment
  • -Metallography
  • -Machinability
  • 1Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 5Total Suppliers