FOR SHAPED-ROUND SHANK / BOSS / INLAY CORE PINS
Inlay Core Pins
T Tolerance
M Material
Shaft diameter (D or P)
Type
Group
Page
Tip part (A, V)
Length (L, F)
SKH51 equivalent SKD61 equivalent
+ 0.01 0 + 0.02 0 + 0.02 0 + 0.01 0 + 0.02 0 + 0.02 0
0 –0.005
CPV–2 □
± 0.005
Shaft Diameter (D) Selection
Precision
–
Large-diameter Straight Core Pins – Shaft diameter (D) selection/Shaft diameter (P) designation– GCMN GCMK GCMX GCMBN GCMBK GCMBX P.419
Round Core Pins for boss –Shaft diameter (D) selection/Shaft diameter (P) designation– BC □ S– □□ BC □ BS– □□ P.423
Product Name Part Number Page
Round Shank Core PinsShape B Shape C Shape D CPD– □□ CPP– □□ CPH– □□ CPV– □□ P.421
0 –0.005
＊＊
CPH–2 □
CPP–2 □
± 0.01
Standard
F
–0.01 –0.02
L
CPD–2 □
± 0.015
–
0 –0.005
CPVB–2 □
± 0.005
Shaft Diameter (P) Designation
Precision
–
0 –0.005
＊＊
CPHB–2 □
CPPB–2 □
± 0.01
Round Core Pins for boss–Gas vent hole type– GV–BC □ S– □□ GV–BC □ BS– □□
Straight Core Sleeves –S dimension designation type– CS □ K □ 4T CS □ K □ CS □ KB □ 4T CS □ KB □
–S dimension selection type– CS □□ 4T CS □□ CS □ B □ 4T CS □ B □
Standard
–0.01 –0.02
CPDB–2 □
± 0.015
–
P.425
P.427
P.429
＊＊ Web–only products E Tolerance of dimensions F and A vary depending on the shape.
■ Information on Web–only products
The following products will only be available online. These are being sold as usual, so go to the website mentioned below. https://jp.misumi-ec.com/vona2/mold/
■ Material Characteristics of Core Pins (Round, Round Shank, Inlay) and Core Sleeve E Use this data for reference only as it is dependent on specific heat treatment and usage conditions.
NAK80 Precipitation type Prehardened steel
SKD61 Thermal die steel
SKH51 High speed tool steel
M Material
58–60
48–52
37–43
H Hardness HRC
Abrasion resistance
5
3.5
2
Ability to be mirror–finished
4
4
5
Machining characteristics
Shape A
Shape B
Shape C
Shape D
Shape E
Toughness
3
5
1
Corrosion resistance
3
3
3
Density
[g/cm 3 ]
8.2
7.75
7.8
Inlay Core Pins –Shaft diameter (D) selection type– CP □ –2A CP □ –2B CP □ –2C CP □ –2D CP □ –2E
Inlay Core Pins –Shaft diameter (P) designation type– CP □ B–2A CP □ B–2B CP □ B–2C CP □ B–2D CP □ B–2E
Modulus of longitudinal elasticity [kg/mm 2 ]
22300
21000
20500
Physical characteristics
Coefficient of thermal expansion [×10 –6 /K(°C)]
10.1
10.8
12.5
[cal/cm ・ sec ・ °C]
Thermal conductivity coefficient
0.0509
0.061
0.1
Tensile strength
[kgf/mm 2 ]
235
135
128
Mechanical characteristics
[kgf ・ m/cm 2 ]
Charpy impact values
2
6
2.2
Machining characteristics Poor 1 ⇐⇒ 5 Excellent Conversion formula
1kgf/mm 2 = 9.81N/mm 2 1cal/cm ・ sec ・ °C = 418.6W/m ・ K 1kgf ・ m/cm 2 = 9.81J/cm 2
Inlay Bushings–Head type– IRHB
–Straight type– IRB
Core Pins for shaft holes CPS □□ CPSB □□
418
417
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