PROPRIETARY Uddeholm Fermo Tool steels
Material group:
Ferrous Alloys / Tool steels
Country / Standard:
PROPRIETARY
Data updates
Latest Update: 2016-04
Total number of updates: 1
Update History
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PROPRIETARY Uddeholm Fermo Chemical Composition
CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.4800
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
1.5000
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.9000
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3
Böhler-Uddeholm AG, Product Data Sheets,
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PROPRIETARY Uddeholm Fermo Physical Properties
Temperature
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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PROPRIETARY Uddeholm Fermo Heat Treatments
- Stress relieving: 550-650°C (1020-1200°F) or 25°C (50°F) below the tempering temperature used during the prehardening. Holding time: 2 h. Cooling in furnace to 500°C (930°F), then freely in air; Hardening: it is primarily intended for flame hardening. If ordinary heat treatment is required, the following directions can be followed: austenitizing temperature: 840-880°C (1540-1620°F), normally 860°C (1580°F), holding time: 20-30 minutes, the tool should be protected against decarburization during hardening, quenching medium: oil (temper the tool as soon as its temperature reaches 50-70°C (120-160°F)), maximum surface hardness after hardening will be approx. 57 HRC, the steel hardens through up to a material thickness of ~50 mm; Tempering: The tempering temperature according to the hardness. Temper twice. Lowest tempering temperature 180°C (360°F). Holding time at temperature minimum 2 hours.
PROPRIETARY Uddeholm Fermo Mechanical Properties
Temperature
Tensile Strength
600 — 800
MPa
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Brinell Hardness (HB)
250 — 290
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Elongation, A
10 — 15
%
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Reduction of Area
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Yield Strength, Rp0.2
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- -Cross References
- 4Composition
- 10Mechanical Properties
- 3Physical Properties
- 2Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- -Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- 1Total Suppliers