PVC Materials Injection Molding

Base Materials: SACM645,SCM440
Treatment: Nitrided/Bimetallic/Chrome-Plating
Hardness: HRC65-HRC70

Product Description:

Soft PVC	Screw Material	Barrel Material	Heat Treatment / Surface Process	Estimated Service Life
Standard Soft-PVC	38CrMoAlA	38CrMoAlA	Gas Nitriding	Screw: 2–4 years Barrel: 2–4 years
Soft PVC (continuous production)	Corrosion-resistant bimetallic screw	Nitrided barrel	Nickel-based alloy spray welding	Screw: 3–4 years
PVC + CaCO₃ filler	Bimetallic screw	Bimetallic barrel	PTA hardfacing	Screw: 2–4 years Barrel: 2–5 years
Medical-grade Soft PVC	Stainless steel screw (SKD61 / 316-based alloy)	Corrosion-resistant barrel	Hard chrome / alloy coating	Screw: 3+ years
High-output Soft PVC production	SACM645 + nickel alloy	Bimetallic barrel	Nickel/chromium alloy coating	Screw: 3–4 years
Recycled Soft PVC	High-corrosion-resistant bimetallic screw	High-alloy bimetallic barrel	Tungsten carbide + nickel alloy	Screw: 2–4 years

Rigid PVC Material Type	Recommended Screw Material	Recommended Barrel Material	Heat Treatment / Surface Process	Estimated Service Life (Reference)
Standard UPVC	38CrMoAlA	38CrMoAlA	Gas nitriding	Screw: 1.5–3 years Barrel: 2–4 years
UPVC with CaCO₃ filler	Bimetallic screw	Bimetallic barrel	Nickel-based alloy hardfacing	Screw: 2–4 years Barrel: 3–5 years
High-output UPVC production	SACM645 bimetallic screw	Bimetallic barrel	PTA alloy welding	Screw: 2–4 years
Recycled UPVC	High-corrosion-resistant bimetallic screw	High-alloy bimetallic barrel	Tungsten carbide + nickel alloy	Screw: 2–4 years
PVC electrical compounds	Nickel-alloy screw	Corrosion-resistant barrel	Chromium/nickel alloy coating	Screw: 3–4 years
Heavy CaCO₃-filled UPVC	HIP wear-resistant powder steel screw	High-wear bimetallic barrel	Tungsten carbide coating	Screw: 3–4 years