PROPRIETARY TSP4 Tool steels
Material group:
Ferrous Alloys / Tool steels
Country / Standard:
PROPRIETARY
Data updates
Latest Update: 2026-03
Total number of updates: 1
Update History
This material has 47 properties — only a subset is shown here.
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PROPRIETARY TSP4 Chemical Composition
CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
1.30
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
4.25
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mo
VALUE
4.75
UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2
CRITERIA
W
VALUE
val1
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UNIT
%
CAS NUMBER
7440-33-7
Arcelor Mittal, Product Data Sheets,
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PROPRIETARY TSP4 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 TSP4 Heat Treatments
- Soft annealing: temperature: 870 - 900°C. Slow cooling in the furnace at 10°C/hour down to 540°C, then air cooling.
Stress relief:
After machining and before heat treatment, it is recommended to perform stress relief at 650°C for a minimum of 2 hours, followed by slow cooling in the furnace to 450°C.
After machining by electrical discharge machining in the treated state, it is recommended to perform stress relief at 20°C below the last tempering temperature for a duration of 2 hours.
Austenitization: recommended temperature: 1160 - 1180°C.
Quenching medium: oil at 80°C, vacuum (pressure > 6 bar, recommended quenching speed: 7°C/s), salt bath 500 - 550°C.
Cold treatment: for parts that must have high dimensional stability and to increase wear resistance without reducing toughness, it is recommended to perform cold treatment at a temperature between -110°C and -190°C for 1 hour per 25 mm of part thickness. This treatment transforms the residual austenite (unstable and relatively soft phase) into martensite (stable and hard). This treatment is optional for standard applications.
Tempering: to ensure a minimal residual austenite rate and greater tool stability, triple tempering is essential. A duration of 2 hours for each tempering cycle is recommended.
PROPRIETARY TSP4 Mechanical Properties
Temperature
Brinell Hardness (HB)
≤ 270
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Rockwell Hardness (HR)
55 — 65
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- 5Cross References
- 5Composition
- 32Mechanical Properties
- 3Physical Properties
- 1Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- -Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- 1Total Suppliers