PA6 YUEHUA YH800I Resin

Material Introduction: PA6 YUEHUA YH800I (Hunan Yuehua) is a medium‑viscosity, low‑warpage, high‑rigidity injection‑molding PA6 resin with excellent electrical properties and wear resistance. It delivers good mechanical strength and thermal performance, yet it is hygroscopic. Moisture content shall be kept below 0.07%, and sufficient drying is required before processing.

Main Applications

Automotive lightweight parts: Engine intake manifolds, engine hood covers, EV battery supports, charging‑gun housings (resist cracking under‑40℃~120℃ thermal cycles).

Electronic & electrical precision components: Protective / insulating assemblies, circuit‑breaker housings, 5G base‑station antenna radomes, LED heat‑dissipation structures.

Key industrial‑equipment parts: Gears, bearing cages, hydraulic valve blocks, end‑effectors for robotic arms.

Emerging‑technology scenarios: UAV structural parts, smart‑home transmission components, medical sterilizable devices.

Performance Parameters

Performance Category	Test Standard / Condition	Unit	Typical Value	Remarks & Interpretation
Physical Properties
Density	GB 1033‑86	g/cm³	1.156	Injection‑molding PA6 grade
Relative Viscosity	GB/T 1632‑93	‑	2.85±0.03	‑
Monomer Content	Chromatographic internal‑standard method	%	＜0.3	‑
Moisture Content	GB 6509‑86	%	＜0.07	Strict moisture control required
Mechanical Properties
Tensile Strength	GB 1040‑92	MPa	60.7	‑
Elongation at Break	GB 1040‑92	%	48.1	‑
Flexural Strength	GB 9341‑88	MPa	86.6	‑
Flexural Modulus	GB 9341‑88	MPa	2087	‑
Rockwell Hardness	GB 9341‑88	R	72.2	‑
Notched Impact Strength	GB 9342‑88	kJ/m²	20.1	‑
Molding Shrinkage	GB/T 1043‑93	%	0.93‑1.30	‑
Thermal Properties
Melting Point	‑	℃	215‑220	‑
HDT @1.8 MPa	1.8 MPa	℃	71.0	‑
Electrical Properties
Volume Resistivity	GB 1044‑70	Ω·cm	1.5×10¹⁴	‑
Surface Resistivity	GB 1044‑70	Ω	2.4×10¹³	‑
Dielectric Constant	GB 1044‑70	‑	0.65	‑
Dielectric Loss Tangent	GB 1045‑70	‑	5.0×10⁻²	‑

Injection Molding Parameters

Processing Item	Recommended Range / Condition	Notes & Explanations
Drying Treatment	Hot‑air drying at 80‑100 ℃ for at least 4‑6 h; vacuum drying preferred.	Critical operation. Keep moisture ≤0.1% to avoid hydrolysis, bubbles, silver streaks and strength degradation.
Melt Temperature	230‑280 ℃ general range.	Depends on equipment and articles. Do not exceed 300 ℃; avoid long residence at high temperature.
Mold Temperature	60‑80 ℃ for most parts.	Mold temperature affects crystallinity; proper mold temperature ensures good appearance and mechanical performance.
Injection Pressure	60‑100 MPa, adjust per product & mold design.	Adjust according to product structure and wall thickness.
Injection Speed	Medium‑high speed.	Faster speed facilitates cavity filling.
Back Pressure	0.5‑1.0 MPa (5‑10 kgf/cm²).	Proper back‑pressure homogenizes melt and improves venting.
Screw Speed	Medium speed.	Avoid excessive shear heat.
Runner & Gate	Oversized runner and gate are not allowed, yet dimensions shall not be too small.	PA6 solidifies fast; sufficiently large gate ensures smooth filling.
Shutdown Notice	Purge barrel with PE / PP of good thermal stability on pause or shutdown to prevent carbonization of residual PA6; turn off heating system for long‑term shutdown.	‑
Molding Shrinkage	0.93%‑1.30% (typical for YH800I).	Subject to process parameters and product design.

Disclaimer: All above data is for reference only.