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Bimetallic Alloy

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BIMETALLIC ALLOY

 

For barrels

JINYI invested in metallurgical research and this allowed us to offer an exclusive range of bimetallic alloys that solve wear problems. The bimetallic alloys are produced in modern sophisticated centrifugal casting facilities.

The advantage of our bimetallic alloys is the high and homogeneous hardness throughout the whole layer thickness which ranges from 1.5 to 2 mm thickness. The lifetime increase of the bimetallic cylinder against a nitrided cylinder may exceed 12 times or more. The price-quality-lifetime ratio is therefore very beneficial for the bimetallic cylinder. We have three different alloy solutions listed in the table below. We qualified the quality of the different alloys according abrasion and or corrosion resistance to enable a quick selection.

 

JYK series bimetallic alloys for barrels.
TYPE ALLOY COMPONENTS HARDNESS (HRC) ABRASIVE RESISTANCE CORROSION RESISTANCE APPLICATIONS
JYK-1, C Fe, Cr, Ni 56 – 60 x x Recycling & engineering plastics, reinforced additives less than 20%.
JYK-2, B Ni, W, Cr 58 – 62 xx xx Moderate corrosive, reinforced additives less than 35%
JYK-3, A Ni, W, Cr 60 – 64 xxx xx High abrasive and moderate corrosive plastics
Suitability: (x good) to (xxx excellent).

TYPE

COMPOSITION (WEIGHT %)

Cr

C

Fe

B

Si

W *

Mn

Ni

Others

JYK-1, C

8

1.2

Bal

4.3

4

/

0.65

10.8

< 1.0

JYK-2, B

8

1.4

5

4

3.3

16.5

0.5

Bal

< 1.0

JYK-3, A

8

1.4

5

4

3.3

40*

0.5

Bal

< 1.0
* Highest composition of tungsten carbide can go up to 45%, which enables the barrels have 5 times wear-resistance capability than normal bimetallic barrels and up to 60% glass fibre filling in general & engineering plastics materials.
For screws
JINYI offers a full range of single and twin screws. Based on our extensive experience we offer different materials types and treatments to fight wear. The materials range from nitriding steels, stainless steels, tool steels up to steels produced by powder technology (PM).
JYS series bimetallic alloys for screws.
TYPE ALLOY COMPONENTS HARDNESS (HRC) ABRASIVE RESISTANCE CORROSION RESISTANCE APPLICATIONS
JYS-1, B Ni. Cr, Si 52– 56 x x Recycling & engineering plastics.
JYS-2, A Ni, Cr, W 54– 58 xx x Engineering plastics, reinforced additives less than 20%.
JYS-3, D Co, Cr, W 44 – 48 x xx Reinforced additives and corrosive plastics less than 15%.
Suitability: (x good) to (xxx excellent).
Furthermore, we have 3 different screw coating methods.
COATINGTYPE COATING METHOD COATING THICKNESS HARDNESS MAX. LENGTH APPLICATIONS
TiN PVD 0.002 – 0.003mm 2000 – 2200 HV 1900mm Optical products & abrasive plastics processing.
Chrome Plate Electroplating 0.02 – 0.08mm 650 – 720 HV 6000mm Transparent products & corrosive plastics processing.
Tungsten Carbide HVOF 1.0 - 1.5mm 1100 – 1400 HV 2300mm High abrasive plastics processing.

For Base Materials

Here is a list of our regular base materials.

JINYI CODE China Japan USA Germany Hardness Applications
GB JIS AISI/SAE DIN
JYN1 38CrMoAI SACM645 6470E 41CrAlMo7 HV 950-1000 General plastic
JYN2 40Cr SCr440 5140 1.7035 HRC 42-55 Bimetallic base
JYN3 42CrMo SCM440 4140 1.7223 HRC 48-52 Tiebar
JYN4 45# S45C 1045 1.1191 HRC 42-46 Accessories
JYH5 Cr12MoV ~ SKD11 D5 1.2601 HRC 56-58 Engineering plastic
JYH6 4Cr5MoSiV1 SKD61 H13 1.2344 HRC 50-52 Engineering plastic
JYH7 9Cr18MoV SUS440B 440B 1.4112 HRC 56-58 Corrosive plastic
JYG1 Cr12Mo1V1 SKD11 D2 1.2379 HRC 54-60 <30% Glass fibre
JYG2 ★ Confidential HRC 60-65 <50% Glass fibre
JYG3 HRC 58-62 <40% Glass fibre
JYG4 HRC 62-65 >50% Glass fibre
JYG5 HRC 62-65
JYG6 HRC 62-65
JYG7 HRC 50-56 Optical products
JYG8 MRC 56-58 >300℃ temperature

Remark: The material listed above are for our regular use, and are subject to change without notice. The hardness and application depend on the specific requirements. The information in the table is for your reference only.