Model

Chemical Composition

C

Si

Mn

Cr

P

S

Low Chromium

2.6-3.5

0.2-1.5

0.3-1.5

0.8-1.8

≤0.1

≤0.06

Medium Chromium

2.3-3.3

0.2-1.5

0.5-2.2

2.5-8.5

≤0.1

≤0.06

High Chromium

2.2-3.2

0.4-1.6

0.4-1.6

10-13

≤0.1

≤0.06

Model

Mechanical properties

Microstructure

HRC

Toughness without notch (J/cm2)

Low Chromium

≥45

>2.0

P+C

Medium Chromium

≥52

>2.5

P+C

High Chromium

≥60

>3.5

M+C

Φ8×8(10)

Φ10×10(12)

Φ12×12(14)

Φ14×14(16)

Φ16×16(18)

Φ18×18(20)

Φ20×20(25)

Φ25×25(30)

Φ25×30

Φ30×30(35)

Specification

Weight/pcs (kg)

Pcs/ton

Φ10×12

0.008

125000

Φ12×14

0.014

71420

Φ14×16

0.023

43470

Φ16×18

0.030

33330

Φ18×20

0.037

27000

Φ20×25

0.061

16390

Φ25×30

0.125

8000

Φ30×35

0.215

4651

Φ35×40

0.310

3225