BÖHLER W300 (PROPRIETARY) Material Properties

Material group: Ferrous Alloys / Tool steels
Country/Standard: PROPRIETARY

Data updates

Latest Update: 2021-04
Total number of updates: 1
Update History:

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Brinell Hardness (HB) ≤ 205 view details
Rockwell Hardness (HR) 30 — 56 view details
Brinell Hardness (HB) ≤ 205 view details
Rockwell Hardness (HR) 30 — 56 view details

Physical Properties

Temperature

0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 215 GPa view details
Modulus of Elasticity val1
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GPa view details
Density val1
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kg/dm³ view details
Density val1
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kg/dm³ view details
Poisson Coefficient val1
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view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Thermal Conductivity 26 W/(m∙°C) view details
Thermal Conductivity val1
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W/(m∙°C) view details
Thermal Conductivity val1
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W/(m∙°C) view details
Heat Capacity val1
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J/(kg∙°C) view details
Heat Capacity val1
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J/(kg∙°C) view details
Electrical Resistivity 0.52 Ω∙mm²/m view details
Electrical Resistivity val1
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Ω∙mm²/m view details
Electrical Conductivity val1
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S/m view details
Electrical Conductivity val1
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S/m view details
Modulus of Elasticity 190 — 215 GPa view details
Modulus of Elasticity val1
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GPa view details
Density val1
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kg/dm³ view details
Density val1
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kg/dm³ view details
Poisson Coefficient val1
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view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Thermal Conductivity 26 W/(m∙°C) view details
Thermal Conductivity val1
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W/(m∙°C) view details
Thermal Conductivity val1
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W/(m∙°C) view details
Heat Capacity val1
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J/(kg∙°C) view details
Heat Capacity val1
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J/(kg∙°C) view details
Electrical Resistivity 0.52 Ω∙mm²/m view details
Electrical Resistivity val1
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Ω∙mm²/m view details
Electrical Conductivity val1
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S/m view details
Electrical Conductivity val1
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S/m view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
val1
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UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
val1
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UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3
CRITERIA
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2

Böhler Edelstahl, Product Data Sheets / Available at: www.bohler-edelstahl.com, visited 2015

Heat Treatments

  • <b>Annealing:</b> 750 to 800°C / Controlled slow cooling in furnace (10 to 20°C/h) to approx. 600°C air cooling. <br><b>Stress relieving:</b> 600 to 650°C, slow cooling in furnace. Slow cooling in furnace; intended to relieve stresses set up by extensive machining, or in complex shapes. After through heating, hold in neutral atmosphere for 1 to 2 hours. <br> <b>Hardening:</b> 1000 to 1040°C, oil, salt bath (500 to 550°C), air. Holding time after temperature equalization: 15 to 30 minutes.<br><b>Tempering:</b> Slow heating to tempering temperature immediately after hardening/time in furnace: 1 hour for every 20 mm of work piece thickness, but not less than 2 hours/ air cooling (minimum holding time: 1 hour);<br>1<sup>st</sup> tempering approx. 30°C above maximum secondary hardness<br>2<sup>nd</sup> tempering to desired working hardness<br>3<sup>rd</sup> tempering for stress relieving. 30 - 50°C below highest tempering temperature