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Type

Model

Hardness

(HRC)

Wear resistant

Corrosion resistant

Thickness

Application

Glass Fiber

PTA weld

J1 38CrMoAlA

Ni-base alloy

45-58

Excellent

Special excellent

1.5~3mm

Under 10%

J2 SKD61

Ni-base alloy

45-58

Special excellent

Excellent

1.5~3mm

Under 15%

Nitriding

J3 Nitrided

HV more than 800

Good

Good

0.25mm

/

Main Base materials

1.38CrMoAlA  (Nitriding Steel)

2. SKD-61   (Special Tool Steel)

3. 42CrMo (Ultrahigh Strength Steel)

4. DC53 (Cold Work Die Steel) 

5. W6Mo5Cr4V2 (High-Speed Tool Steel)

6. HPT

Main Alloy Materials

1. Ni-based alloy/Deloro alloy

2. Tungsten carbide/Wolfram carbide

3. NiCo-based alloy

4. Fe-based alloy

5. Co-based alloy  

Processing Technics

1. Heat treatment

2. Quenching

3. Nitriding treatment

4. Bimetallic alloy welding

5. Bimetallic alloy centrifugal casting

6. Hard-chrome electroplating

Technical parameters

Nitriding layer depth

0.5-0.8mm

Nitrided hardness

HRC56-58

Nitrided brittleness

Less than grade 1

Surface roughness

Ra 0.4

Linearity of screw

0.015mm

Hard-chrome plating hardness

≥HRC57

Chrome-plating layer depth

0.03-0.09mm

Bimetallic layer depth

3 mm

Bimetallic layer hardness

HRC58-62

Above are main technical information, a suitable screw and barrel will be made according to your requirement.