Typical Alloy Layer Name of Bimetallic Barrel & Bimetallic Screw

May 12,2016

A. For a Bimetallic Barrel:

Manufactory

Alloy name for
wear resistance

Alloy name for
corrosion resistance

 Alloy name for wear resis-
tance & corrosion resistance

 XALOY Co., Ltd in U.S.A

 X-102

X-309

X-800

 Shanghai Omega Machinery Co., Ltd

Omega 101

Omega 201

Omega 301

 Japan Steel Works Co. Ltd. in Japan

－

N alloy 60 S

N alloy 2000

 Kobe Steel Co. Ltd. in Japan

C-105

C-700

C-300

 Hitach Metals Co. Ltd in Japan

H-10

H-303

H-70

 BERNEX Co., Ltd in Switzerland

A 110

C 242

AC 333 / ACW800

 REILOY Co., in Germany

R112 / R121

R115

R121 / R215 / R216

 EUROVITI Co., in Italy

E 100

E 300（Co Base）

E 800


B. For a Bimetallic Screw:

The bimetallic screw with armoured flights consist of a weldable and nitriable base material with an alloy applied to the flight. Between the armouring layer and the base material, there is perfect material bonding. This armouring layer is a special alloy AX system. 

Alloy Name of bimetallic screw
Made by Shanghai Alpha

Hardness（HRC）

Properties

Abration resistant

Corrosion resistant

AX 1

38～42

★

★★★★

AX 2

45～50

★★

★★★★

AX 3

52～56

★★★

★★★★

AX 4

58～60

★★★★

★★★★

AX 4-A

HV 900

★★★★★

★★★★

Armouring thickness between 1.0 and 1.5 mm

or example of our AX4-A alloy layer, its thickness is from 1.0mm to 1.5mm and its hardness is round HV900. This alloy layer has a minimum contact wear ratio when it is running inside a bimetallic barrel. It is similar in composition of NiWC25 made by Stellite Company in USA and batter than Colmonoy alloy because of WC inside, as shows below:

C

Mn

Si

B

Cr

Fe

Ni

Co

W

HV

0.5～1.5

≤0.1

3.0～5.5

2.0～5.0

13.5～17.5

≤12.0

Balance

3.0～7.0

20.0～25.0

900

Remarks：Name X-102 & X-309 above separately refer to old alloy model X-101 and X-305 made by XALOY.


Chief Engineer Office
Shanghai Omega Machinery Co., Ltd

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