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Base Materials:

1) 38CrMoAlA(SACM 645)

2) 42CrMo(AISI 4140)

3) Cr12MoV(SKD11)

4) 4Cr5MoSiV1(SKD61)

5) 9Cr18MoV

6) 40Cr

7) DC53 (JIS G4404)

Bimetallic Alloy Materials:

1) Fe-based alloy

2) Ni-based alloy

3) Co-based alloy

4) NiCo-based alloy

5) Wolfram carbide

Bimetallic alloy level:

Alloy powder including 40% Wolfram Carbon

Alloy powder including 25% Wolfram Carbon

Alloy powder including 9.5% Wolfram Carbon

Processing Technology: 

Heat treatment

High-frequency quenching 

Nitriding treatment

Hard-chrome electroplating 

Bimetallic alloy welding

Technical Parameter:

Quenching and Tempering Hardness:HB300-320

Nitrided layer depth:0.50-0.80mm

Nitrided hardness: 950-1100HV 

Nitrided brittleness: Less than 2 level

Surface roughness: Ra 0.4μm

Linearity of screw: 0.015mm/m

Hard-chrome plating hardness after nitriding: ≥950HV

Chrome-plating layer depth: 0.025~0.10mm 

Bimetallic layer depth: 3-5 mm

Bimetallic hardness: HRC60-70

Terms and Conditions:

Payment: T/T, D/P, D/A, L/C, WESTERN UNION, Cash

Means of transport: Ocean, Air, Express

Packing: Wooden Case (Export standard)

Production time:About 20-30 days after we receive the advanced payment 

Compared to other supplier, 

JINMAO advantages:

1. Advanced Nitriding Technology

2. Hard Metal Cold/Thermal Spraying Technology

3. Anti-corrosion and Wearresisting Duplex Metal 

Spraying Technology

4. Advanced PTA/HVOF process Technology

5. High output, good plasticizing effect,energy saving

6. Wear resistant&Corrosion resistant, longer using life of screw barrel              

7. Fast production&Rapid delivery  

8. Best customer service!