PROPRIETARY CarTech No. 481 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: PROPRIETARY

Data updates

Latest Update: 2025-03
Total number of updates: 1
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PROPRIETARY CarTech No. 481 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.55
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.25
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

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PROPRIETARY CarTech No. 481 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.67 — 7.86 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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PROPRIETARY CarTech No. 481 Heat Treatments

  • Normalizing: If normalizing is required for the purpose of grain refinement, heat uniformly to 871-899°C (1600-1650°F), then cool in still air.
    Annealing: Should either be packed in a suitable container using a neutral packing compound or placed in a controlled atmosphere furnace. Heat uniformly to 732-760°C (1350-1400°F), then cool very slowly in the furnace at a rate of not more than 11.1°C (20°F) per hour until the furnace is black. The furnace may then be turned off and allowed to cool naturally.
    Hardening: from temperatures between 857-871°C (1575-1600°F). Endothermic atmospheres should be held to dew point limits of between 10-15.6°C (50-60°F). Without preheating, place the tool right in the hot furnace and let it heat naturally until its color uniformly matches the color of the thermocouple in the furnace. Soak an additional 5 minutes per 25.4 mm of thickness, then quench in oil. The temperature of the tool should be brought right down to the temperature of the oil in the quench. May also be water quenched using a hardening range of 830-843°C (1525-1550°F). This will increase hardness and wear resistance to some degree; however, this introduces a danger of cracking in complicated sections. In addition, increased size change and distortion may occur due to the more drastic water quench.
    Stress Relieving: To relieve machining stresses for greater accuracy in hardening, first rough machine, then heat to a temperature of 649-677°C (1200-1250°F), hold at heat for a minimum of 1 hour, then cool slowly. After cooling, the part or parts may be finish machined.

PROPRIETARY CarTech No. 481 Mechanical Properties

Temperature

PROPERTY / VALUE
Brinell Hardness (HB)
≤ 229
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Rockwell Hardness (HR)
31 — 62
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  • -Cross References
  • 6Composition
  • 13Mechanical Properties
  • 8Physical Properties
  • 1Heat Treatment
  • -Metallography
  • 1Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 1Total Suppliers