PROPRIETARY SIHARD S460 Tool steels

Material group: Ferrous Alloys / Tool steels

Country / Standard: PROPRIETARY

Data updates

Latest Update: 2021-10

Total number of updates: 2

Update History

2017-06

This material has 31 properties — only a subset is shown here.

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PROPRIETARY SIHARD S460 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

1.00

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

8.00

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

0.30

UNIT

CAS NUMBER

7439-96-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-98-7

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-21-3

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-62-2

SIJ Metal Ravne, Product Data Sheets,

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PROPRIETARY SIHARD S460 Physical Properties

Temperature

0 - 30°C 30 - 100°C 100 - 300°C ≥ 300°C

PROPERTY / VALUE

Modulus of Elasticity

190 — 210 GPa

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Thermal Conductivity

17.6 W/(m∙°C)

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Density

val1 kg/dm³

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Heat Capacity

val1 J/(kg∙°C)

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Poisson Coefficient

val1

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This material has 31 properties — only a subset is shown here.

Unlock detailed physical values across temperatures and conditions.

PROPRIETARY SIHARD S460 Heat Treatments

Annealing: When used after reforging, spheroidization annealing has to precede hardening. Annealing must be performed after hot working and before rehardening. Heat at a rate not exceeding 50°C/h to reach 820-860°C, and hold at that temperature for 1 for every 25 mm of workpiece thickness, 2 h minimum. Then cool slowly in furnace down to 600°C at a rate not exceeding 20°C/h. Continue cooling to ambient temperature in furnace or in the air. The final hardness should be maximum 250 HB.
Hardening: To minimize distortion and stresses in large or complex tools apply double preheat. Heat at a rate not exceeding 50°C/h to 620-680°C for equalization, and then continue heating to reach 820-840°C. For geometric shape tools, use only the second temperature range as a single preheating treatment. Heat rapidly from the preheat. Furnace or salt bath: 1040-1080°C. Equalize and soak at austenitizing temperature for 30 minutes for pieces up to 25 mm in thickness, plus 15 minutes for each additional 25 mm of thickness. Quenching at 1040 to 1080°C / air, oil or inert gas. To increase hardness by 1-2 HRC and dimensional stability after quenching, the sub-zero treatment may be used. Temper immediately after quenching (when material reaches 90-70°C). At least two tempering treatments are recommended to achieve a uniform tempered microstructure. Heat slowly to reach tempering temperature. Holding time in furnace: 1 h for every 25 mm of workpiece thickness, but 2 h minimum. This is followed by air cooling. Typical tempering temperatures are 150 to 580°C.

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1Cross References

6Composition
-Mechanical Properties
17Physical Properties
3Heat Treatment
1Metallography
-Machinability

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

-Joints
-Coatings
-Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

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