PROPRIETARY Uddeholm Vidar Superior Tool steels

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

Data updates

Latest Update: 2016-04
Total number of updates: 1
Update History

This material has 53 properties — only a subset is shown here.

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PROPRIETARY Uddeholm Vidar Superior Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.36
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
5.0
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.3
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

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PROPRIETARY Uddeholm Vidar Superior Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
val1
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kg/dm³
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Poisson Coefficient
val1
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This material has 53 properties — only a subset is shown here.

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PROPRIETARY Uddeholm Vidar Superior Heat Treatments

  • Soft annealing:
    Protect the steel and heat through to 850°C (1562°F). Then cool in furnace at 10°C (20°F) per hour to 650°C (1202°F), then freely in air.
    Stress relieving:
    After rough machining the tool should be heated through to 650°C (1202°F), holding time 2 hours. Cool slowly to 500°C (932°F), then freely in air.
    Hardening:
    Preheating temperature: 600–900°C (1112–1652°F). Minimum two preheating steps at 600–650°C (1112–1202°F) and 820–850°C (1508–1562°F). When three preheats are used the second is carried out at 820°C (1508°F) and the third at 900°C (1652°F). Austenitizing temperature: 980–1000°C (1796–1832°F). Soaking time: 30–45 minutes.
    Quenching media: high speed gas/circulating atmosphere, vacuum (high speed gas with sufficient positive pressure). An interrupted quench at 350–450°C (662–842°F) is recommended where distortion control and quench cracking are a concern, martempering bath (salt or fluidized bed) at 500–550°C (932–1022°F) or 180–220°C (356–428°F), warm oil, approx. 80°C (176°F). Temper the tool as soon as its temperature reaches 50–70°C (122–158°F). In order to obtain the optimum properties for the tool, the cooling rate should be fast, but not at a level that gives excessive distortion or cracks.
    Tempering:
    Temper minimum twice with intermediate cooling to room temperature. Holding time at temperature is minimum 2 hours. Tempering in the temperature range 450–550°C (840–1020°F) for the intended final hardness will result in a lower toughness.
    Nitriding and nitrocarburizing:
    Before nitriding, the tool should be hardened and tempered at a temperature at least 50°C (120°F) above the nitriding temperature. Gas nitriding at 510°C (950°F) for 10 h and depth of 0.12 mm or 30 h and depth of 0.21 mm. Plasma nitriding at 480°C (895°F) for 10 h and depth of 0.10 mm or 30 h and depth of 0.19 mm. Nitrocarburizing in gas at 580°C (1075°F) for 2.5 h and depth of 0.13 mm. Nitrocarburizing in salt bath at 580°C (1075°F) for 1 h and depth of 0.07 mm.
  • Austenitizing temperature 1000°C (1832°F). Holding time 30 minutes.

PROPRIETARY Uddeholm Vidar Superior Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
1450 — 1680 MPa
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Brinell Hardness (HB)
180
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Elongation, A
12 — 13 %
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Reduction of Area
val1
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%
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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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  • 4Cross References
  • 6Composition
  • 16Mechanical Properties
  • 17Physical Properties
  • 2Heat Treatment
  • -Metallography
  • -Machinability
  • 3Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • 2Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 3Total Suppliers