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303 stainless steel cnc machining service

stainless steel cnc machining service,such as Miniature bolts / nuts / set screws

Our factory can provide CNC machining services for 303 stainless steel Precision machinery accessories, 3C electronic fasteners, instrument shaft pins/valve needles, fixture positioning parts, micro gear/bearing accessories, office equipment transmission parts, and other products that require batch cutting processing and are used in conventional environments

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Material:: 303 stainless steel

Surface Finish:: anti-oxidation

Processing Technology:: CNC turning pins, milling pins, etc.

Size:: OEM

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Introduction to the properties of 303 stainless steel

Performance Metrics	numerical range	Practical Instructions
Tensile strength	≥ 520 MPa	meets the stress requirements of small accessories
Yield strength (0.2%)	≥ 205 MPa	good plasticity, not easily brittle fracture
Elongation	≥ 40%	good cold forming performance, can be slightly bent
Brinell hardness (HB)	≤ 187	Moderate hardness, easy to cut/polish

303 staiWhy choose our CNC machining service?nless steel CNC machining advantages

The machinability is much better than that of 304 stainless steel (304 has sticking and low processing efficiency, while 303 has non sticking and smooth chip removal), making it one of the best grades of austenitic stainless steel in terms of machinability;

Selenium based 303 (303Se) has better machinability than sulfur based, suitable for ultra precision and thin-walled machining, and has less smoke/odor during cutting.

Our factory can provide CNC machining services for 303 stainless steel

Precision machinery accessories, 3C electronic fasteners, instrument shaft pins/valve needles, fixture positioning parts, micro gear/bearing accessories, office equipment transmission parts, and other products that require batch cutting processing and are used in conventional environments

Why choose our CNC machining service?

Strictly implement the accuracy of the drawings and strictly control the surface quality

Realizing all dimensional tolerances, form and position tolerances, and surface roughness

Cutting parameters (fine tuned, adjusted according to surface/size requirements):

Conventional precision (Ra0.8~1.6 μ m, tolerance ± 0.01~0.05mm): cutting speed of 120~150m/min, feed rate of 0.08~0.15mm/r, back cutting amount of 0.3~0.5mm;

Ultra high precision (Ra ≤ 0.4 μ m, tolerance ± 0.005~0.01mm): cutting speed of 150~180m/min, feed rate of 0.03~0.08mm/r, back cutting amount of 0.1~0.3mm, matched with diamond coated cutting tools;

Our requirements for the processing process:

① There is no vibration or secondary cutting throughout the precision machining process, and the cutting tools remain sharp (check the cutting edge every 5-10 pieces and replace immediately if damaged);

② Precision machining of holes: When reaming/boring holes, the speed should be ≤ 800r/min, the feed rate should be ≤ 0.1mm/r, and the roundness of the hole should be ensured to be ≤ 0.005mm;

③ Thin walled precision machining: using layered small cutting depth to reduce workpiece deformation caused by cutting force, and if necessary, performing intermediate clamping to release cutting stress.