45 WCrV 7 (Germany / SEW) Material Properties

Other designations:
Material group: Ferrous Alloys / Tool steels
Country/Standard: Germany / SEW

Data updates

Latest Update: 2019-05
Total number of updates: 1
Update History:

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Brinell Hardness (HB) ≤ 225 view details
Rockwell Hardness (HR) 51 — 57 view details
Brinell Hardness (HB) ≤ 225 view details
Rockwell Hardness (HR) 51 — 57 view details

Physical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 210 GPa view details
Density 7.72 — 8 kg/dm³ view details
Poisson Coefficient 0.27 — 0.3 view details
Modulus of Elasticity 190 — 210 GPa view details
Density 7.72 — 8 kg/dm³ view details
Poisson Coefficient 0.27 — 0.3 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
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
CRITERIA
W
VALUE
val1
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UNIT
%
CAS NUMBER
7440-33-7

SEW 200: 1969 / Alloyed cold work tool steels

Heat Treatments

  • <b>Soft annealing</b>: Slowly heated at 710-750°C, held for several hours, slowly cooled, preferably in the furnace. <br />The soft annealing is most appropriate for machining and cold working and provides the most favorable initial structure for tool hardening.<br /><br /><b>Hardening</b>: Preheated at 500-600°C and then heated faster at 890-920°C, quenched in oil. <br />Temperature of oil should be approx. 50°C. When quenching in aqueous salt solutions, the temperature of the quenching agent may rise to 100°C. <br />Hardening immediately after forging without cooling and annealing is inappropriate because of the risk of cracking.<br /><br /><b>Stress relief annealing</b>: Slowly heated at 600-650°C, held for 1-2 hours, slowly cooled in the furnace.