injection mould machine screw barrel with nitrided and bimetallic treatment
Basic Info
Model No.: screw barrel accessories
Product Description

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 | / |

Alloy Type | EJS01 Alloy | EJS02 Alloy | EJS03 Alloy | EJS04 Alloy | |
Wear resistance | Very good | Good | Very good | Excellent | |
Corrosion resistance | Good | Very good | Very good | Very good | |
Alloy components | Fe+Ni+Cr+B | Ni+Cr+Co+B | Ni+Cr+Co+V+B | Ni+Cr+Wc+Co+B | |
Hardness (HRC) | 58~64 | 50~58 | 55~60 | 56~62 | |
Temperature area (°C) | less than 400 | less 450 | less than 450 | less than 600 | |
Coefficient thermal | RT-250°C | 11.0 x 10-6 | 11.0 x 10-6 | 11.5 x 10-6 | 11 x 10-6 |
Expansion (/°C) | RT-400°C | 11.4 x 10-6 | 11.4 x 10-6 | 12.4 x 10-6 | 12 x 10-6 |




2) Service makes us outstanding. Our sales people are trained on the products every day. They are always ready to answer your questions and offer the best solutions in fluent English at any time. 3) Provide an easier working way. With 6 years export experience, we E.J.S offer before-sales, prouction update, after-sales one stop service, which makes an easier way to work with us. We welcome you to visit our factory at any time!


Product Categories : Screw Barrel Accessories
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