{"id":338,"date":"2026-01-21T06:13:23","date_gmt":"2026-01-21T06:13:23","guid":{"rendered":"https:\/\/www.jccncmachining.com\/?post_type=material&p=338"},"modified":"2026-02-24T09:10:03","modified_gmt":"2026-02-24T09:10:03","slug":"stainless-steel","status":"publish","type":"material","link":"https:\/\/www.jccncmachining.com\/fr\/materials\/stainless-steel\/","title":{"rendered":"Stainless Steel"},"content":{"rendered":"

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Available Stainless Steel Grades<\/h3>\n\n\n\n\n\n\n\n\n\n\n
Grade<\/th>\nCommon Name<\/th>\nKey Characteristics<\/th>\nTypical Applications<\/th>\n<\/tr>\n<\/thead>\n
SS 303<\/strong><\/td>\nFree-Machining Steel<\/td>\nAdded sulfur makes it the easiest stainless to machine. Lower corrosion resistance than 304.<\/td>\nNuts, bolts, bushings, fittings, shafts not exposed to harsh elements.<\/td>\n<\/tr>\n
SS 304 \/ 304L<\/strong><\/td>\n18\/8 Stainless<\/td>\nThe most common grade. Excellent corrosion resistance, good formability. Harder to machine than 303.<\/td>\nKitchen equipment, industrial piping, architectural panels, automotive trim.<\/td>\n<\/tr>\n
SS 316 \/ 316L<\/strong><\/td>\nMarine Grade<\/td>\nContains Molybdenum for superior resistance to chlorides and acids. Biocompatible.<\/td>\nMedical implants, marine hardware, chemical processing equipment.<\/td>\n<\/tr>\n
17-4 PH<\/strong><\/td>\nPrecipitation Hardening<\/td>\nCan be heat treated to high hardness\/strength. Good corrosion resistance. Magnetic.<\/td>\nAerospace structural parts, turbine blades, molding dies.<\/td>\n<\/tr>\n
SS 420<\/strong><\/td>\nCutlery Grade<\/td>\nMartensitic steel with high hardness. Good wear resistance but lower corrosion resistance.<\/td>\nSurgical instruments, knife blades, shear blades, needle valves.<\/td>\n<\/tr>\n
SS 416<\/strong><\/td>\nFree-Machining Martensitic<\/td>\nEasy to machine, high hardness capable. Lower corrosion resistance.<\/td>\nMotor shafts, pump parts, gears, valve components.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Stainless Steel 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-Torque Milling<\/strong><\/td>\nUsing rigid CNC machines with high torque at low RPM to cut tough stainless steel without chatter.<\/td>\nOur heavy-duty Mazak machines prevent vibration, ensuring smooth finishes even on hard grades like 17-4PH.<\/td>\n<\/tr>\n
Swiss-Style Turning<\/strong><\/td>\nSliding headstock machining for long, slender stainless steel parts like medical pins and shafts.<\/td>\nCapable of holding tolerances of +\/- 0.005mm for high-precision ISO 13485 medical components.<\/td>\n<\/tr>\n
Hard Metal Machining<\/strong><\/td>\nProcessing heat-treated stainless steels (up to HRC 45) using specialized carbide tooling and coatings.<\/td>\nEliminates the need for post-machining grinding in many applications, reducing costs.<\/td>\n<\/tr>\n
Surface Passivation<\/strong><\/td>\nChemical treatment (Nitric or Citric acid) to remove free iron and enhance the natural oxide layer.<\/td>\nIn-house handling ensures parts meet ASTM A967 standards for maximum corrosion resistance.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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

Tooling Selection:<\/strong>
\nStainless steel tends to “work harden” if cut improperly. We use premium coated carbide tools (TiAlN coating) with sharp cutting edges to shear the material cleanly rather than plowing through it.<\/p>\n

Coolant Strategy:<\/strong>
\nDue to low thermal conductivity, heat stays in the cut. We employ high-pressure flood coolant to dissipate heat rapidly, preventing thermal expansion and extending tool life.<\/p>\n

Feed Rates & Speeds:<\/strong>
\nIt is critical to maintain a constant feed rate. Dwelling or rubbing allows the material to harden instantly, destroying the tool. We optimize tool paths to keep the cutter engaged and moving.<\/p>\n

Rigidity:<\/strong>
\nWorkholding must be extremely rigid. Any vibration can lead to poor surface finish and tool failure. We use hydraulic vices and custom fixtures to secure stainless steel parts firmly.<\/p>\n<\/div>\n

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Primary Application Industries<\/h3>\n

Medical Devices (ISO 13485 Certified)<\/strong>
\nKey Parts:<\/em> Surgical scalpels, bone screws, implants, dental instruments.
\nWhy Stainless Steel:<\/em> Grades like 316L and 17-4PH offer biocompatibility, sterilization resistance, and high strength.<\/p>\n

Food & Beverage Processing<\/strong>
\nKey Parts:<\/em> Mixing blades, valves, conveyor components.
\nWhy Stainless Steel:<\/em> The smooth, non-porous surface of 304\/316 prevents bacterial growth and withstands harsh cleaning chemicals.<\/p>\n

Marine & Oil\/Gas<\/strong>
\nKey Parts:<\/em> Undersea valves, fasteners, sensor housings.
\nWhy Stainless Steel:<\/em> 316L provides excellent resistance to chloride (saltwater) corrosion and pitting in harsh environments.<\/p>\n

Aerospace<\/strong>
\nKey Parts:<\/em> Actuators, landing gear components, structural fittings.
\nWhy Stainless Steel:<\/em> Precipitation-hardening grades (17-4PH) deliver high strength-to-weight ratios and heat resistance.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Available Stainless Steel Grades Grade Common Name Key Characteristics Typical Applications SS 303 Free-Machining Steel Added sulfur makes it the easiest stainless to machine. Lower corrosion resistance than 304. Nuts, bolts, bushings, fittings, shafts not exposed to harsh elements. SS 304 \/ 304L 18\/8 Stainless The most common grade. Excellent corrosion resistance, good formability. Harder […]<\/p>\n","protected":false},"featured_media":350,"template":"","meta":[],"material_type":[9],"material_attribute":[],"application_feature":[23,20,22],"machining_process":[25,26,27,28,29],"class_list":["post-338","material","type-material","status-publish","has-post-thumbnail","hentry","material_type-metal","application_feature-corrosion-resistant","application_feature-high-strength","application_feature-high-temp"],"_links":{"self":[{"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/material\/338","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/material"}],"about":[{"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/types\/material"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/media\/350"}],"wp:attachment":[{"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/media?parent=338"}],"wp:term":[{"taxonomy":"material_type","embeddable":true,"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/material_type?post=338"},{"taxonomy":"material_attribute","embeddable":true,"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/material_attribute?post=338"},{"taxonomy":"application_feature","embeddable":true,"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/application_feature?post=338"},{"taxonomy":"machining_process","embeddable":true,"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/machining_process?post=338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}