PROPRIETARY BÖHLER W350 Tool steels

Material group: Ferrous Alloys / Tool steels

Country / Standard: PROPRIETARY

Data updates

Latest Update: 2021-06

Total number of updates: 2

Update History

2021-04

This material has 56 properties — only a subset is shown here.

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PROPRIETARY BÖHLER W350 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

0.38

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

5.00

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

0.55

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

Böhler Edelstahl, Product Data Sheets,

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PROPRIETARY BÖHLER W350 Physical Properties

Temperature

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

PROPERTY / VALUE

Modulus of Elasticity

190 — 214.3 GPa

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Thermal Conductivity

28.9 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 56 properties — only a subset is shown here.

Unlock detailed physical values across temperatures and conditions.

PROPRIETARY BÖHLER W350 Heat Treatments

Annealing: 800 to 850°C (1472 to 1562°F).Slow controlled cooling in furnace at a rate of 10 to 20°C/hr (18 to 36°F/hr) down to approx. 600°C (1112°F), further cooling in air.
Stress relieving:600 to 650°C (1112 to 1202°F). Slow cooling in furnace. To relieve stresses caused by extensive machining, or for complex shapes. Soak for 1 - 2 hours after temperature equalisation (in neutral atmosphere).
Hardening: 1020°C (1010°C) [1868°F (1850°F)] Oil, hot quenching (500 - 550°C [932 – 1022°F]), air or vacuum with gas quenching. Holding time after temperature equalization: 15 to 30 minutes.
TemperingSlow heating to tempering temperature immediately after hardening/time in furnace 1 hour for each 20 mm (0.79 inch) of workpiece thickness but at least 2 hours/cooling in air. It is recommended to temper at least twice. A third tempering cycle for the purpose of stress relieving may be advantageous.
1^st tempering approx. 30°C (85°F) above maximum secondary hardness.
2^nd tempering to desired working hardness. The tempering chart shows average tempered hardness values.
3^rd tempering for stress relieving at temperatures between 30 and 50°C (85 - 120°F) below the highest tempering temperature.

PROPRIETARY BÖHLER W350 Mechanical Properties

Temperature

0 - 30°C

PROPERTY / VALUE

Tensile Strength

1386.9 — 1875.8 MPa

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Brinell Hardness (HB)

≤ 205

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Reduction of Area

val1 %

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Rockwell Hardness (HR)

val1

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Yield Strength, Rp0.2

1157.4 — 1557.3 MPa

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1Cross References

6Composition
27Mechanical Properties
19Physical Properties
2Heat Treatment
-Metallography
-Machinability

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

-Joints
-Coatings
-Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

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