Type

Code

HRC

Performance advantage

Alloy composition

Types of resin

Grade C iron-based alloy barrel

Base Material: 50CrV / 40Cr

JK1

HRC 58-62

Wear resistant

C, Mn, Si, B, Ni, Fe, Cr

General resin and general engineering resin.

PP, PA, ABS, POM, PBT, PC with below 35% GF.

JK2

HRC 64-69

Highly wear resistant

C, Mn, Si, B, Ni, Fe, Mo, Cr

General resin and general engineering resin.

PP,PA,LCP,PPS,PPA,POM,PBT,PC with below 40%GF.

Grade B nickel-based alloy barrel

Base Material: 50CrV / S45MnSiV

JK3

（Ni+25% WC）

HRC 55-60

Wear resistant,corrosion resistant

Cr, Si, B, Fe, Ni, C, W

General resin and general engineering resin.

PP,PA,LCP,PPS,PPA,POM,PBT,PC with below 50%GF.

JK5
（Ni+40% WC）

HRC 58-62

Highly wear resistant,

Highly corrosion resistant

Cr, Si, B, Fe, Ni, C, W

General resin and general engineering resin.

PP,PA,LCP,PPS,PPA,POM,PBT,PC,PEEK with below 60%GF,as well as common halogen-free PA9T, PA10T etc.

Grade A Cobalt -based alloy barrel

Base Material: S45MnSiV

JK6

（Co+25% WC）

HRC 58-62

Superior wear resistant,superior corrosion resistant

Cr, Si, B, Co, C, Ni, Mo, W

General resin and general engineering resin.

PP, PA, LCP, PPS, PPA, POM, PBT, PC, PEEK with below 60%GF,as well as halogen-free raw material.

JK7

HRC 60-65

Superior wear resistant,superior corrosion resistant

W, Cr, Ni, Mo, B

Special high glass fiber superior halogen- free raw material.

4T, 6T, HTN, DSM, PSM and kinds of highly corrosive acidic plastic.

Screw Name

Hardness

Abrasion Resistance

Corrosion resistance

Main ingredients

Types of resin

JJS1

HRC50-52

★★★☆☆

★★☆☆☆

C, Si, Mn, Cr, Mo, V

General resin and general engineering resin.

Containing below 30%GF.

JJS1-B

Carbide Alloy

HRC50-52

★★★★☆

★★☆☆☆

C, Si, Mn, Cr, Mo, V, Ni+W

General resin and general engineering resin.

Containing below 40%GF.

JJS2

HRC58-62

★★★☆☆

★★★☆☆

C, Cr, Mo, V

General resin and general engineering resin.

Containing below 35%GF. Suitable for injection molding process of  all-electric high shot speed, high pressure molding and high rotational speed.

JJS2-A

HRC60-62

★★★★☆

★★★☆☆

C, Cr, V, MO, Si

General resin and general engineering resin.

Containing below 40%GF.Suitable for injection molding process of  all-electric high shot speed, high pressure molding and high rotational speed.

JJS2-B Carbide Alloy

HRC58-62

★★★★★

★★★☆☆

C, Cr, Mo, V, Ni+W

General resin and general engineering resin.

PP, PA, LCP, POM, PPA, PBT, PC, PPS, PEI, PEEK with below 50% GF.

JJS2-C

HRC58-62

★★★★☆

★★★☆☆

C, Cr, V, MO, Si, Mn

General resin and general engineering resin.

PP,PA,LCP,POM,PPA,PBT,PC,PPS,PEI,PEEK with below 40%GF.

JJS3

HRC58-62

★★★★☆

★★★☆☆

C, Cr, V, MO, Si, W, Co

Suitable for special engineering resin PA, LCP, PBT, PEI, PEEK, PP, POM, PPS with below 50% GF, added iron powder,ceramic powder and other high temperature resistant resin, as well as plastic with low viscosity.

JJS5  Carbide Alloy

HRC50-55

★★★★★

★★★★☆

C, Cr, V, MO, Ni+W

JJS6

HRC56-58

★★★★☆

★★★★☆

C, Cr, V, MO

Suitable for special engineering resin with superior corrosive flame retardant and halogen free flame retardant formulation, containing reinforced PA, PA46, LCP, POM, PBT, PPS, PA9T and other plastic raw material with below 60%GF.

JJS6-A   Carbide Alloy

HRC56-58

★★★★★

★★★★★

C, Cr, V, MO, Ni+W