Φ8

Φ10

Φ12

Φ14

Φ16

Φ8

Φ20

Φ22

Φ25

Φ30

Φ35

Φ40

Φ45

Φ50

Φ60

Model

HRC

Microstructure

Low Chromium

>45

P+C

Medium Chromium

>49

P+C

High Chromium

>54

M+C

Type

Chemical composition

C

Si

Mn

Cr

Mo

Cu

P

S

Low chromium cast the cylpebs

2.6-3.5

0.2-1.5

0.3-1.5

0.4-1.5

0-0.8

0-0.8

≤0.15

≤0.15

Medium chromium cast in the cylpebs

2.3-3.3

0.2-1.5

0.5-2.2

3.8-8.5

0.4-1.3

0.2-1.0

≤0.12

≤0.12

High chromium cast the cylpebs

2.2-3.2

0.4-1.6

0.4-3.5

10-16

0.3-1.5

0.2-1.0

≤1.0

≤1.0