{"id":520,"date":"2026-02-24T07:31:14","date_gmt":"2026-02-24T07:31:14","guid":{"rendered":"https:\/\/www.jccncmachining.com\/material\/\/"},"modified":"2026-02-24T07:31:14","modified_gmt":"2026-02-24T07:31:14","slug":"stainless-steel-303","status":"publish","type":"material_model","link":"https:\/\/www.jccncmachining.com\/es\/materials\/stainless-steel\/stainless-steel-303\/","title":{"rendered":"Stainless Steel 303"},"content":{"rendered":"

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SS 303 Machining Capabilities<\/h3>\n\n\n\n\n\n\n\n\n
Capability<\/th>\nTechnical Description<\/th>\nJucheng Advantage<\/th>\n<\/tr>\n<\/thead>\n
High-Speed Swiss Turning<\/strong><\/td>\nSS 303 contains sulfur, which acts as a chip breaker. This allows for extremely fast turning speeds compared to 304.<\/td>\nOur Swiss lathes can run 303 parts 24\/7 with minimal tool wear, offering the lowest unit cost for stainless components.<\/td>\n<\/tr>\n
Complex Knurling<\/strong><\/td>\nThe material’s machinability makes it excellent for forming or cutting diamond knurls without flaking.<\/td>\nWe produce tactile knobs and grip surfaces with crisp, defined patterns that are visually perfect.<\/td>\n<\/tr>\n
Precision Threading<\/strong><\/td>\nTapping and single-point threading are smooth and burr-free due to the brittleness of the chips.<\/td>\nIdeal for manufacturing standoffs, inserts, and custom screws with tight thread tolerances (6g\/6H).<\/td>\n<\/tr>\n
Deep Hole Drilling<\/strong><\/td>\nDrilling deep bores is significantly easier in 303 than 304, as chips evacuate easily without jamming.<\/td>\nWe can drill high aspect ratio holes for fluid nozzles and sensor housings efficiently.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Fabrication Guidelines for Stainless 303<\/h3>\n

Corrosion Trade-off:<\/strong>
\nThe added sulfur improves machinability but lowers corrosion resistance compared to 304. Tip:<\/strong> Do not use 303 for marine environments or pressurized gas containment where micro-porosity from sulfur could be an issue.<\/p>\n

Do Not Weld:<\/strong>
\n303 is generally considered non-weldable<\/strong>. The sulfur content causes “hot cracking” during welding. Tip:<\/strong> Design assemblies to be bolted or pressed, not welded.<\/p>\n

Passivation Care:<\/strong>
\nPassivating 303 requires careful chemistry control (often Citric acid based) to avoid etching the sulfur inclusions, which can turn the part black (“frosting”).<\/p>\n<\/div>\n

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Primary Applications<\/h3>\n

Fasteners & Hardware<\/strong>
\nNuts, bolts, screws, and standoffs that require the look and feel of stainless but need to be produced cheaply in high volumes.<\/p>\n

Electrical Components<\/strong>
\nConnectors, terminals, and switchgear housings where non-magnetic properties (annealed) and precision are needed.<\/p>\n

Industrial Bushings<\/strong>
\nMoving parts requiring decent wear resistance and preventing seizing (galling) which is more common in 304\/316.<\/p>\n

Automotive fittings<\/strong>
\nSensor bodies and interior trim parts that are not exposed to road salt.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

SS 303 Machining Capabilities Capability Technical Description Jucheng Advantage High-Speed Swiss Turning SS 303 contains sulfur, which acts as a chip breaker. This allows for extremely fast turning speeds compared to 304. Our Swiss lathes can run 303 parts 24\/7 with minimal tool wear, offering the lowest unit cost for stainless components. Complex Knurling The […]<\/p>\n","protected":false},"featured_media":521,"template":"","meta":[],"class_list":["post-520","material_model","type-material_model","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.jccncmachining.com\/es\/wp-json\/wp\/v2\/material_model\/520","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jccncmachining.com\/es\/wp-json\/wp\/v2\/material_model"}],"about":[{"href":"https:\/\/www.jccncmachining.com\/es\/wp-json\/wp\/v2\/types\/material_model"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jccncmachining.com\/es\/wp-json\/wp\/v2\/media\/521"}],"wp:attachment":[{"href":"https:\/\/www.jccncmachining.com\/es\/wp-json\/wp\/v2\/media?parent=520"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}