Material selection affects how a metal part is formed, finished and used. Strength, weight, corrosion exposure and appearance need to be considered together with the part’s geometry and manufacturing route.
At JIANSEN, we discuss material requirements alongside drawing-based metal fabrication and hardware orders. The guide below compares common material choices and finishing considerations. The grade, condition, thickness and process availability are reviewed for each project.
Start with the part’s function and operating environment, then consider forming, joining and finishing. The same material family can behave differently depending on its grade, thickness and condition.
| Material | Surface Finish | Key Benefit | Forming Consideration | Corrosion Consideration | Typical Part Types | Sheet Forming | CNC Machining | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Powder Coating | E-Coating | Zinc Plating | Brushing / Polishing | Anodizing | Stainless Passivation | |||||||
| Cold-Rolled Steel | ||||||||||||
| Cold-rolled low-carbon steel | ✓ | ✓ | ✓ | ○ | — | — | Smooth sheet surface | Grade-dependent | Protective finish needed | Brackets, covers | ✓ | ○ |
| Hot-Rolled Steel | ||||||||||||
| Hot-rolled low-carbon steel | ✓ | ✓ | ✓ | ○ | — | — | General fabrication use | Grade and thickness matter | Surface preparation matters | Plates, support parts | ○ | ○ |
| Galvanized Steel | ||||||||||||
| Zinc-coated sheet | ✓ | ✓ | — | ○ | — | — | Zinc-coated surface | Consider coating at bends | Review cut edges and joints | Panels, covers | ✓ | ○ |
| Stainless Steel | ||||||||||||
| 304 stainless steel | ○ | ○ | — | ✓ | — | ✓ | Corrosion resistance | Allow for work hardening | Exposure-dependent | Housings, brackets | ✓ | ○ |
| 316L stainless steel | ○ | ○ | — | ✓ | — | ✓ | Molybdenum-alloyed grade | Allow for work hardening | Assess chloride exposure | Exposed components | ✓ | ○ |
| Aluminum | ||||||||||||
| 5052-H32 aluminum | ✓ | ✓ | — | ✓ | ✓ | — | Low weight | Bend radius matters | Exposure-dependent | Panels, formed parts | ✓ | ○ |
| 6061 aluminum | ✓ | ✓ | — | ✓ | ✓ | — | Low weight | Temper is critical | Exposure-dependent | Brackets, machined parts | ○ | ✓ |
Material properties depend on the applicable grade, product form and condition. Final material and finish requirements belong in the drawing or order specification. Surface finishing for JIANSEN orders is coordinated through external processing partners.
Choose the material and finish around your part’s function, environment and manufacturing requirements.
Discuss Your Material Requirements