SK7 (Japan / JIS) Material Properties

Material group: Ferrous Alloys / Tool steels
Country/Standard: Japan / JIS

Data updates

Latest Update: 2016-02
Total number of updates: 2
Update History:
2016-01

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Brinell Hardness (HB) ≤ 183 view details
Rockwell Hardness (HR) 56 view details
Brinell Hardness (HB) ≤ 183 view details
Rockwell Hardness (HR) 56 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 27.6 E+03 — 30.5 E+03 ksi view details
Density 0.279 — 0.289 lb/in³ view details
Poisson Coefficient 0.27 — 0.3 view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.60 – 0.70
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
≤ 0.30
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
≤ 0.25
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

Carbon tool steels, JIS G 4401 / 2006

Heat Treatments

  • Annealing: 730-760°C, slow cooling. Quenching: 770-830°C, water cooling. Tempering: 150-200°C, air cooling.