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Standard Low Pressure Die Casting
Single/double-stage pressure control with pressure parameters adjustable on demand, mature and stable process, flexibly adapting to small-to-medium batch customization.
Get QuoteCustom Low Pressure Die Casting Services
We provide you with high-density, high-quality low pressure die casting solutions, supporting mass production of full-category structural parts to meet diverse production needs.
- Stable forming to ensure product density.
- Multi-material compatibility for various performance requirements.
- Flexible adaptation, supporting multi-specification mass production.
- Full-process control to ensure stable quality.
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Trusted by Engineers and Purchasing Leaders at the World's Most Successful Companies
15+Years in LPDC
200,000+LPDC Castings Delivered
98.8%On-Time Delivery Rate
≤1.2%overall defect rate
Trusted bynumerous companies
JS Precision provides metal casting services. With 15+ years of experience, we ensure a 98.8% on-time delivery rate and maintain a defect rate of ≤1.2% to achieve reliable manufacturing.
Low Pressure Die CastingWith JS Precision
Core Technological Advantages
Leveraging stable low-pressure technology, we ensure castings with dense, uniform internal structures and consistent dimensional accuracy for complex parts through precision mold design.
Full-Process Adaptability
Compatible with aluminum-magnesium alloys and other materials, supporting full-process services from prototype verification to small-batch mass production, meeting performance and precision requirements of different scenarios.
Customized Scenario Solutions
We deliver customized low-pressure casting solutions for specialized sectors, ensuring optimal performance-scenario alignment for multi-specification structural components.
What is Low Pressure Die Casting?
Precision Low Pressure Casting Process
Low pressure die casting injects molten metal into molds using controlled gas pressure (typically 0.06–0.15 MPa), ensuring upward filling through a riser tube for minimal turbulence. This method reduces gas entrapment and oxidation, yielding dense, high-integrity components with superior mechanical properties.
Key Advantages and Applications
The process delivers exceptional dimensional accuracy and surface finish for complex thin-walled parts, achieving over 90% material yield by eliminating risers. Ideal for aluminum and magnesium alloys, it is widely adopted in automotive and aerospace sectors for critical components like engine parts and structural housings.
Custom Low Pressure Casting Process Solutions
We have developed three low pressure die casting processes for customized needs, which can accurately match your small-batch, high-precision production requirements.
Differential Pressure Low Pressure Die Casting
By maintaining a precise pressure difference between the sealed crucible and mold chamber, this method achieves exceptional density (over 99.8%) and is suited for high-performance automotive and aerospace components.
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Pressure-Regulated Low Pressure Die Casting
Automated multi-stage pressure control ensures precise management of filling and solidification, enhancing stability for complex custom parts while balancing cost and quality.
Get QuoteLow Pressure Die Casting Core Technology Parameters
Our engineered low pressure casting services are defined by a rigorous set of core parameters, ensuring component integrity for critical applications. These specifications form the foundation of our tailored solutions, fully compliant with international automotive and aerospace quality protocols.
Low Pressure Die Casting General Core Parameters
Dimensional Accuracy
CT4-CT8
Surface Finish
Ra3.2-Ra12.5μm
Minimum Wall Thickness
≥ 2mm
Filling Pressure
0.02-0.15MPa
Filling Speed
0.05-0.5m/s
Casting Density
≥99.5%
Weight Range
0.5-50kg
Batch Capacity
100-20,000 pcs/month
Low Pressure Die Casting Materials
| Casting Material | Melting Temperature(°C) | Tensile Strength(MPa) | Hardness (HB) | Adapted Low Pressure Process | Application Scenario |
|---|---|---|---|---|---|
| Aluminum Alloy A356/A357 | 720-740 | 280 | 80-100 | Full Process | Automotive Wheels, Engine Cylinder Heads, New Energy Accessories |
| Aluminum Alloy 6061/6063 | 700-720 | 310 | 90-110 | Pressure-Regulated/Differential Pressure | Rail Transit Structural Parts, Aerospace Lightweight Parts |
| Aluminum Alloy 7075 | 730-750 | 500 | 150-180 | Differential Pressure Casting | Aerospace Core Components, High-End Hydraulic Accessories |
| Magnesium Alloy AZ31/AZ91 | 650-680 | 200 | 60-80 | Pressure-Regulated/Differential Pressure | New Energy Vehicle Housings, 3C Lightweight Structural Parts |
| Aluminum-Copper Alloy ZL205A | 740-760 | 350 | 110-130 | Differential Pressure Casting | Aeroengine Accessories, High-End Mold Cores |
Three key low-pressure die casting process parameters
Standard LPDC Service
- Filling Pressure
- 0.03-0.09MPa
- Pressure Control
- Automated Open-Loop
- Casting Density
- ≥99.5%
- Dimensional Accuracy
- CT7-CT8
- Prototype Lead Time
- 2-4 Days
Differential Pressure LPDC
- Filling Pressure
- 0.06-0.14MPa
- Pressure Control
- Intelligent Closed-Loop
- Casting Density
- ≥99.85%
- Dimensional Accuracy
- CT5-CT6
- Prototype Lead Time
- 8-12 Days
Pressure-Regulated LPDC
- Filling Pressure
- 0.04-0.11MPa
- Pressure Control
- Multi-Stage Programmable
- Casting Density
- ≥99.7%
- Dimensional Accuracy
- CT6-CT7
- Prototype Lead Time
- 5-8 Days
How to Execute the Low Pressure Die Casting Processes
Our engineered low pressure die casting service follows a rigorous, six-stage protocol to transform your design into high-integrity aluminum or magnesium components.
1
Feasibility & Process Engineering
We conduct comprehensive DFM analysis, optimizing part design for superior casting integrity and efficient production.
2
Advanced Mold Engineering & Simulation
Utilizing advanced thermal simulation, we optimize mold design for perfect filling and solidification to achieve target mechanical properties.
3
Precision Mold Manufacturing
Mold cavities are precision-machined from premium tool steels using CNC and EDM to achieve critical tolerances and surface finishes.
4
First Article Validation
Initial castings undergo rigorous CMM inspection and NDT validation to ensure dimensional and quality specifications are met.
5
Process Parameter Finalization
We fine-tune key parameters—including temperature (660-760°C) and pressure profiles (0.01-0.14 MPa)—to lock in optimal microstructure and performance.
6
Serial Production & Quality Assurance
Approved molds enter volume production under SPC, guaranteeing consistent output of high-density (≥99.7%) castings with CT5-CT7 accuracy.
Post-Casting CNC Machining
Our integrated machining service delivers complete, precision-finished components. We provide expert-guided CNC solutions to add critical features, achieve tight tolerances, and ensure the final performance of your die-cast parts.
Our dedicated post-casting machining solutions include
Multi-Axis CNC Machining for complex contours and critical bore tolerances.
- High-Speed Precision Milling for superior surface finishes on functional interfaces.
- Wire EDM Services for intricate details and sharp internal features in hardened alloys.
- Comprehensive Metrology with CMM inspection for final quality validation.
Low Pressure Die Casting Materials & Finish
Low pressure die casting utilizes non-ferrous alloys selected for excellent fluidity and dimensional stability. We provide certified materials and expert guidance to meet the mechanical integrity and performance specifications of your project.
Die Casting Alloys
Aluminum Alloys Casting
Engineered for superior strength-to-weight ratios and corrosion resistance, ideal for complex structural components in automotive and aerospace applications.
- A356
- A380
- 6061
- 7075
Low Pressure Die Casting Quality Assurance
At JS Precision, quality drives every step—from the inspection equipment we use to the rigorous standards we uphold. Our ISO 9001, IATF 16949 certifications guarantee consistent excellence for your custom Low Pressure die castings.
Professional Inspection Equipment
3D Coordinate Measuring Machine, Ultrasonic Flaw Detector (UT), X-ray Flaw Detector (RT), Direct Reading Spectrometer, Universal Material Testing Machine, Metallographic Microscope.
Authoritative Quality Standards
ISO 9001, IATF 16949, AS 9100, GB/T 13822, GB/T 6414, GB/T 9444.
Customized Inspection Services
First-article inspection for custom parts / Full-process traceability, ensuring every custom casting meets precise requirements.
Looking for high-quality custom Low Pressure die castings? Request your quote today and initiate your custom die casting project.
Custom Low Pressure Die Casting Success Stories
JS Precision delivers custom die casting solutions for clients in aerospace, premium automotive, medical devices, and more. Our success stories demonstrate exceptional precision and reliable quality, from complex thin-walled structures to biocompatible components.
Aerospace
Low-Pressure Casting of Aero-Engine Turbine Casings
Challenge: Complex thin-walled structure requiring ultra-high density and tight dimensional tolerance for high-temperature operation. Solution: Differential pressure low-pressure casting + 5-axis precision machining + mold flow analysis optimization.
±0.015mmDimensional Accuracy
99.85%Casting Density
30%Shorter Delivery Cycle
Premium Automotive
Low-Pressure Casting of Electric Drive Housings
Challenge: Lightweight design for EVs requiring both airtightness and mechanical strength. Solution: Pressure-regulated low-pressure casting + helium mass spectrometry leak testing + aging treatment.
22%Weight Reduction
<1e-7Pa·m³/sLeak Rate
≥350MPaTensile Strength
Medical Devices
Low-Pressure Casting of CT Scanner Frame Supports
Challenge: Biocompatible material requiring ultra-flatness and compliance with ISO 13485 medical standards. Solution: Standard low-pressure casting + precision grinding + medical-grade passivation.
0.015mmFlatness
100%ISO 10993 Compliant
≤7 DaysSample Custom Delivery Cycle
New Energy
Low-Pressure Casting of Fuel Cell End Plates
Challenge: Hydrogen fuel cell systems requiring high airtightness and hydrogen embrittlement resistance. Solution: Differential pressure low-pressure casting + helium leak testing + surface coating.
5e-8Pa·m³/sLeak Rate
100%Hydrogen Embrittlement Resistant
25%Faster Production Cycle
Precision Instruments
Low-Pressure Casting of Astronomical Telescope Mounts
Challenge: High-precision optical components requiring high dimensional stability and surface finish. Solution: Pressure-regulated low-pressure casting + artificial aging + precision polishing.
0.6μmSurface Roughness
99.2%Dimensional Stability
20%Improved Surface Finish
Why Choose JS Precision's Low Pressure Die Casting Services?
We deliver precision-engineered low pressure die casting solutions that ensure superior component integrity, streamlined production cycles, and expert customization for complex project requirements.
/01
Guaranteed Precision & Quality
Our advanced quality assurance integrates 3D CMM inspection and ultrasonic testing throughout the manufacturing process. This rigorous approach, backed by IATF 16949 certification, guarantees high-density, defect-free castings with exceptional dimensional stability.
/02
Rapid Project Execution
We prioritize efficient lead times through agile production planning and mold flow analysis. This optimized process accelerates prototyping and shortens development cycles, ensuring reliable delivery for both urgent and volume orders.
/03
Expert Customization Support
Leverage our extensive engineering experience for complex custom projects. We specialize in optimizing designs for thin-walled geometries and special alloys, providing comprehensive support from initial design to final production.
ADVANTAGES
Key Advantages of Low-Pressure Die Casting
JS Precision's low pressure die casting process offers multiple core technical advantages, providing reliable support for precision custom scenarios:
Dense & Defect-Free Castings
Stable low pressure filling + pressure-holding solidification, casting density 99.5%, no internal defects such as porosity.
Al-Mg Alloy Special Adaptation
Precise flow control, solving oxidation and porosity issues of light alloys, excellent mechanical properties.
Precision Forming of Thin-Walled Parts
Filling speed 0.05-0.5m/s, suitable for 2mm thin-walled parts, uniform wall thickness without cold shuts.
High Molten Metal Utilization
No/minimal riser design, molten metal utilization 90%, effectively reducing raw material costs.
High Batch Production Consistency
Automated temperature and pressure control, consistent dimensions and performance, yield rate 98%.
Low Pressure Die Casting Applications
Low pressure die casting is ideal for producing high-integrity, near-net-shape components with excellent mechanical properties. This service is engineered for production runs requiring superior dimensional accuracy, material density, and complex thin-walled geometries.
Automotive
Engine brackets, structural nodes, steering knuckles, and sophisticated suspension components.
Aerospace
Lightweight seat frames, avionics housings, engine accessory mounts, and interior structural panels.
Industrial Equipment
Robust pump housings, durable valve bodies, hydraulic manifolds, and heavy-duty machinery components.
Energy & Electrification
Inverter housings, motor end plates, battery tray components, and power distribution units.
Consumer Durables
High-strength frames for power tools, structural parts for appliances, and premium architectural hardware.
Low Pressure Die Casting Latest News
Stay informed with the latest updates and announcements from JS Precision. Learn about our most recent projects.
Low Pressure Die Casting FAQs
Yes, it is ideal. Our flexible production model supports small batches starting from 10 units, and with agile mold change technology, we can efficiently respond to multi-variety custom needs.
Dimensional accuracy reaches CT4-CT6, tolerance ±0.005mm, and casting density ≥99.5%, meeting requirements of precision scenarios such as aerospace and medical.
We support aluminum-magnesium alloys, titanium alloys, high-temperature alloys, etc., and can provide material selection and process optimization solutions based on needs.
Yes. Filling speed can be precisely adjusted (0.05-0.5m/s), enabling forming of thin-walled complex parts with minimum wall thickness ≥2mm, ensuring uniform wall thickness without defects.
Standard custom projects are delivered in 7-10 business days, with 48-hour rapid prototyping for urgent needs. Lead times can be further shortened with DFM optimization.
We support anodizing, hard anodizing, sandblasting, polishing, electrophoresis, etc., meeting appearance and performance requirements of different scenarios.
We use a fully automated temperature and pressure control system, combined with full-process quality control such as 3D coordinate inspection, to ensure consistency of dimensions and performance.
Yes. Our engineering team offers full-link DFM support from structural optimization to process implementation, improving product manufacturability.
Absolutely. Our processes meet medical-grade biocompatibility and aerospace-grade strength requirements, and we have provided supporting solutions for multiple high-end projects.
The standard minimum wall thickness is ≥2mm. For specific precision scenarios, it can be optimized to 1.8mm while ensuring uniform wall thickness.
