Selecting the right material for custom door hardware products requires more than choosing stainless steel by name. Installation environment, corrosion exposure, usage frequency, manufacturing method, surface finish, performance standards, and budget should all be considered before sampling and mass production.
Indoor residential hardware and exterior commercial hardware may require different material strategies. Humidity, coastal exposure, cleaning chemicals, and traffic level can all influence material selection.
For many architectural applications, sus304 door hardware provides a practical balance of corrosion resistance, manufacturability, appearance, and cost. sus316 door hardware is often considered when stronger corrosion resistance is required.
HANGFAT offers both SUS304 and SUS316 across selected lever-handle ranges.
Material selection should be connected to measurable performance rather than appearance alone.
EN 1670 classifies corrosion resistance for building hardware through neutral salt spray testing. Grade 5 represents the highest corrosion-resistance classification and requires 480 hours of testing.
HANGFAT's Stainless Steel U Form EN Standard Lever Handle uses SUS304 and can reach 480 hours of salt spray testing in applicable configurations. The same product can also achieve 200,000-cycle durability under BS EN 1906.
The selected material must also suit forming, machining, welding, polishing, and surface treatment.
A typical door hardware manufacturing process includes material inspection, cutting or forming, machining, welding, polishing, finishing, assembly, and testing. HANGFAT uses laser cutting and laser welding on selected stainless steel handle products.
For OEM and ODM projects, material should therefore be confirmed before the design is frozen. Changing the grade later may affect welding parameters, polishing results, testing, production cost, and lead time.
The base material and finish should be evaluated together. Satin and polished stainless steel emphasize the metal itself, while PVD and other coated finishes introduce additional appearance and process-control requirements.
For bulk supply, buyers should approve the material grade, finish sample, color, texture, and acceptable appearance variation before mass production.
Before approving a custom product, confirm:
Indoor or outdoor use
SUS304 or SUS316
Required corrosion grade
Surface finish
Door and Lock application
Durability requirement
Expected order volume
Destination market
Required test documentation
This project sourcing checklist reduces the risk of choosing a material that meets the visual requirement but fails the actual application.
A direct custom door hardware manufacturer can evaluate how material changes affect forming, welding, polishing, assembly, testing, and production cost. This provides more useful technical feedback than selecting material only from a catalog.
HANGFAT was established in 1994, integrates product development with manufacturing, provides OEM and ODM services, and reports production capacity of approximately 800,000 pairs or sets per month.
For custom projects, material selection should ultimately balance environment, function, manufacturability, quality control, and export compliance. Choosing the correct grade at the development stage helps create door hardware that can pass required testing and remain consistent when the project moves from sample approval into repeatable bulk production.
