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Valve Guides

Valve Guides

Product Details:

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Product Description

VALVE STEM DIA (mm)

INTAKE (m)

EXHAUST (m)

6-7

10-40

25-55

8-9

20-50

35-65

10-12

40-70

55-85

Size Range

SPECIFICATION

FROM

TO

Bore (mm)

4.0

20.0

Outer Diameter (mm)

8.0

30.0

Length (mm)

25.0

200.0

CHEMICAL COMPOSITION

ELEMENT

CAST IRON
GG25

SINTERED
METAL

BRASS
CuZn40Al2
CuZn37Mn3Al2PbSi
DIN 17660
2.0550

Carbon (%)

3.00-3.40

1.50-3.00

56.50-59.00

Silicon (%)

1.80-2.50

0.40 MAX

0.30-1.00

Manganese (%)

0.60-0.80

1.20 MAX

BAL

Sulphur (%)

0.00-0.12

0.60 MAX

1.30-2.30

Phosphorus (%)

Min 0.35

0.80 MAX

1.40-2.60

Chromium (%)

-

-

2.00 MAX

Molybdenum (%)

-

-

-

Nickel (%)

-

-

-

Vanadium (%)

-

-

-

Copper (%)

-

4.00-10.00

56.50-59.00

Magnesium (%)

-

0.50 MAX

-

Tin (%)

-

0.80 MAX

-

Aluminum (%)

-

-

1.30-2.30

Lead (%)

-

-

0.80 MAX

Zinc (%)

-

-

BAL

HARDNESS (BHN)

190-250

120-200

150-170

THERMAL CONDUCTIVITY (W/mK)

38-45

21-48

46-100

COEFFICIENT OF THERMAL CONDUCTIVITY (10-6 K)

9-11

9-13

18-22

 

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