Locks and hinges require a balance of strength, wear resistance, corrosion resistance, dimensions and cycle life. Compare 17-4PH, 440C or custom materials according to the load-bearing and friction functions of each component.
Engineering focus: Stainless steel powder for locks and hinges
Review the material, particle-size, process and validation factors that matter for this application.
First split the parts requirements by function.
Material selection depends on contact and impact conditions.
Cycle performance cannot be guaranteed by the grade name alone.
Split parts by function
The load and friction states of lock tongues, lock cores, levers, pins, hinges and connectors are different, and material selection should be decided around specific parts rather than the entire set of products.
Different directions of strength and wear resistance
17-4PH can be used as a balance direction between strength and corrosion resistance, and 440C can be used as a high-hardness and wear-resistant direction; contact stress, impact and corrosive environments will change the choice.
Cycle life requires finished product verification
Sinter density, dimensional tolerance, heat treatment, surface treatment and assembly clearance jointly affect the opening and closing or locking life. Public material introduction cannot replace finished product testing.
Part requirements to evaluate first
- Locks, hinges, levers, connections and small friction parts
- Projects focusing on complex shapes and cycle life
Also consider these manufacturing conditions
- Loading, friction, corrosion and impact conditions
- Tolerances, heat treatment, surface and life testing
Discuss your powder project
Share the process step, operating conditions and part result you want to improve.
- Part name, geometry or drawing
- Load, wear, corrosion, temperature and service-life requirements
- Forming, sintering, heat-treatment and surface-finishing route
- Estimated monthly or annual volume and project stage
Technical references for this page
These references explain materials, processes or test methods. Third-party product data does not represent Tongcheng product specifications.