PROPRIETARY Böhler-Uddeholm P20 Modified Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels

Country / Standard: PROPRIETARY

Data updates

Latest Update: 2018-04

Total number of updates: 2

Update History

2017-07

This material has 21 properties — only a subset is shown here.

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PROPRIETARY Böhler-Uddeholm P20 Modified Physical Properties

Temperature

0 - 30°C 100 - 300°C

PROPERTY / VALUE

Modulus of Elasticity

190 — 250 GPa

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Density

val1 kg/dm³

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Thermal Conductivity

29 W/(m∙°C)

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Heat Capacity

val1 J/(kg∙°C)

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Poisson Coefficient

val1

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This material has 21 properties — only a subset is shown here.

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PROPRIETARY Böhler-Uddeholm P20 Modified Heat Treatments

It is intended for use in the hardened and tempered condition, i.e. the delivered condition. When, however, the steel is to be heat treated to a higher hardness or case hardened, the following instructions may be helpful.
Soft annealing: Protect the steel and heat through to 720°C. Then cool in the furnace at 10°C per hour to 600°C, then freely in air.
Stress relieving: After rough machining the tool should be heated through to 550°C, holding time 2 hr. Cool slowly to room temperature.
Hardening: The steel should be soft annealed before hardening. Preheating temperature: 500-600°C. Austenitizing temperature: 880°C.The steel should be heated through to the austenitizing temperature and held at temperature for 30 minutes. Protect the tool against decarburization and oxidation during the hardening process.
Quenching media: High speed gas/circulating atmosphere. (Only suitable for small dimensions); Oil (Warm oil 65-80°C); Martempering bath 300°C, max. 4 minutes, then air cool. Note: Temper immediately when tool reaches 50–70°C.

PROPRIETARY Böhler-Uddeholm P20 Modified Mechanical Properties

Temperature

0 - 30°C 100 - 300°C

PROPERTY / VALUE

Tensile Strength

1020 MPa

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Brinell Hardness (HB)

300

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Yield Strength, Rp0.2

val1 MPa

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Compression Yield Strength

val1 MPa

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-Cross References

-Composition
7Mechanical Properties
11Physical Properties
2Heat Treatment
-Metallography
-Machinability

-Stress-Strain
-Formability
-Fatigue
-Fracture
-Creep

-Joints
-Coatings
-Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

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