---
id: "knowledge-material-knowledge-en"
title: "Material Knowledge"
description: "Engineering comparisons of aluminum, copper, titanium, stainless steel, engineering plastics, and composite materials."
source: "/en/knowledge/material-knowledge"
language: "en"
generated: true
---

# Material Knowledge

Engineering comparisons of aluminum, copper, titanium, stainless steel, engineering plastics, and composite materials.

Practical technical resources for product design, drawing review, manufacturing decisions, quality validation, and production launch.

## All articles

### [6061 vs 6063 vs 7075 Aluminum: Function, Stock Form, Machining, Anodizing and Production Stability](/en/resources/6061-6063-7075-aluminum-alloy-selection)

A practical comparison of 6061, 6063, and 7075 aluminum based on part function, temper, plate-bar-tube-extrusion stock forms, CNC machining, anodizing, production risk, and RFQ requirements.

### [Aluminum vs. Copper Cold Plates: Material, Performance and Manufacturing Trade-Offs](/en/resources/aluminum-vs-copper-liquid-cold-plates)

A concise comparison of aluminum and copper cold plates covering thermal performance, weight, cost, machinability, corrosion management and hybrid structures.

### [How to Select Lightweight Materials for Humanoid Robots: 7075 Aluminum, Titanium, PEEK and CFRP](/en/resources/humanoid-robot-lightweight-materials)

Compare 7075 aluminum, titanium, PEEK and CFRP for actuator housings, shafts, functional parts and robot links, including stiffness, interfaces, manufacturing risks and suitable applications.

### [How to Select Materials for Humanoid Robot Skeletons: Aluminum, Titanium, Magnesium, PA66, PA10T, PEEK and Carbon-Fiber Composites](/en/resources/humanoid-robot-skeleton-material-selection)

A table-led guide with engineering decision commentary comparing metals, PA66-GF, PA66-CF, PA10T, PEEK, PPS, continuous CFRP and CFRTP for primary links, secondary frames, functional parts and covers, including fatigue, creep, moisture, fiber orientation, joining, fall impact and production validation.

### [Humanoid Robot Body Shell Selection: Warm-Formed Magnesium, Injection-Molded Engineering Plastics and CFRP](/en/resources/humanoid-robot-body-shell-magnesium-plastic-carbon-fiber)

Compare warm-formed magnesium sheet, injection-molded engineering plastics and CFRP for humanoid robot body shells, including tooling, lightweighting, structural integration, assembly CTQs, finishing, dust control and production scale.

### [How to Select Optical Transceiver Heatsink Materials: Extruded Aluminum, CNC Aluminum, Copper and Copper–Aluminum Hybrids](/en/resources/optical-transceiver-heatsink-material-selection)

A manufacturing-focused comparison of 6063 aluminum extrusions, CNC-machined 6061-class aluminum, high-conductivity copper and copper–aluminum hybrid structures for optical transceiver heatsinks, covering spreading resistance, weight, geometry, cost and production risk.