PROPRIETARY WM S-5 Tool steels

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

Data updates

Latest Update: 2018-06
Total number of updates: 1
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This material has 29 properties — only a subset is shown here.

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PROPRIETARY WM S-5 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.55
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Mn
VALUE
0.90
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
0.25
UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

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PROPRIETARY WM S-5 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 29 properties — only a subset is shown here.

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PROPRIETARY WM S-5 Heat Treatments

  • Forging:Heating for forging must be done slowly and uniformly. Heat through at 1800-1950°F (982-1066 °C), but avoid prolonged soaking, and reheat as often as necessary, stopping work when the temperature drops below 1600°F (871°C). After forging cool slowly in lime, mica, dry ashes or furnace. Should always be annealed after forging.
    Annealing:Heat slowly to 1425-1475°F (774-802°C), hold until the entire mass is heated through, and cool slowly in the furnace (40°F (4°C) or hour) to about 1000°F (538°C), after which the cooling rate may be increased. Suitable precautions must be taken to prevent excessive carburization or decarburization.
    Strain relieving:When desirable to relieve the strains of machining, heat slowly to 1050-1250°F (566-676°C), allow to equalize, cool in still air.
    Preheat for hardening:Preheating is generally not necessary, but if employed should be carried out in the range of 1200-1250°F (645-677°C).
    Hardening:It is prone to decarburize under improper conditions of heating, and it is important that furnace atmospheres be controlled closely during the hardening operation. A properly maintained lead pot or salt bath will give good results. Care should be exercised so that the tools are thoroughly heated, but soaking at the hardening temperature should be held to a minimum. In most instances, parts should be quenched as soon as they have uniformly reached the hardening temperature. A range of 1600-1650°F (871-899°C) is usually used for oil quenched tools, while parts to be water quenched are usually hardened from 1550-1600°F (843-871°C).
    Quenching:Depending upon section size and desired hardness, this grade of steel may be quenched in water or oil. In either case, the tools should be allowed to cool to 125-150°F (52-66°C), or where they can be held in the bare hands, then tempered without undue delay.
    Tempering:It is generally tempered in the range of 300-900°F (149-482°C), depending on the hardness desired. Tempering time should be a minimum of 1 hour per inch of cross section. The following may be used as a guide to the hardness that may be expected after oil and water quenching.

PROPRIETARY WM S-5 Mechanical Properties

Temperature

PROPERTY / VALUE
Rockwell Hardness (HR)
49 — 62
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  • -Cross References
  • 4Composition
  • 16Mechanical Properties
  • 7Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 1Total Suppliers