PROPRIETARY LSS Chipper Knife Tool steels

Material group: Ferrous Alloys / Tool steels

Country / Standard: PROPRIETARY

Data updates

Latest Update: 2025-03

Total number of updates: 1

Update History

This material has 29 properties — only a subset is shown here.

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PROPRIETARY LSS Chipper Knife Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

0.5000

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

8.0000

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

0.4500

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

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PROPRIETARY LSS Chipper Knife Physical Properties

Temperature

0 - 30°C 100 - 300°C ≥ 300°C

PROPERTY / VALUE

Modulus of Elasticity

190 — 210 GPa

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Thermal Conductivity

26.1 W/(m∙°C)

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Density

val1 kg/dm³

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Poisson Coefficient

val1

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This material has 29 properties — only a subset is shown here.

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PROPRIETARY LSS Chipper Knife Heat Treatments

HARDENING: Preheating: Heat to 649-677°C (1200-1250°F) and equalize.
Austenitizing (High Heat): Heat slowly from the preheat. Furnace or Salt: 1010-1052°C (1850-1925°F). For maximum wear resistance, austenitize at 1052°C (1925°F). For maximum toughness, austenitize at 1010°C (1850°F). For the optimum combination of wear resistance and toughness, austenitize at 1038°C (1900°F).
Quenching: Air, pressurized gas, or interrupted oil to 66-51°C (150-125°F). For oil, quench until black, about 482°C (900°F), then cool in still air to 66-51°C (150-125°F).
Tempering: Temper immediately after quenching. Hold at temperature for 1 hour per 25.4 mm of thickness, 2 hours minimum, then air cool to ambient temperature. Double tempering is recommended for tempering temperatures of 482°C (900°F) and higher.
Cryogenic Treatment: It can be done as an extension of the quench from the austenitizing treatment or it can be done after tempering.
ANNEALING: Annealing must be performed after hot working and before rehardening. Heat at a rate not exceeding 222°C per hour (400°F per hour) to 885°C (1625°F), and hold at temperature for 1 hour per 25.4 mm of maximum thickness; 2 hours minimum. Then cool slowly with the furnace at a rate not exceeding 11°C per hour (20°F per hour) to 649°C (1200°F). Continue cooling to ambient temperature in the furnace or in air.

PROPRIETARY LSS Chipper Knife Mechanical Properties

Temperature

0 - 30°C

PROPERTY / VALUE

Brinell Hardness (HB)

≤ 229

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Rockwell Hardness (HR)

59 — 61

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-Cross References

12Composition
4Mechanical Properties
10Physical Properties
1Heat Treatment
-Metallography
-Machinability

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

-Joints
-Coatings
-Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

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