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Chemical Composition

Chemical composition for Stainless Steel Profile Wire & Bar

Austenite series (Series 2, Series 3)
Grade Chemical composition Unit :%  
JIS AISI DIN C Si Mn P S Ni Cr Mo Others Characteristics and Application
SUS 201 201 0.15 max 1.00 max 5.50 – 7.50 0.060 max 0.030 max 3.50 – 5.50 16.00 – 18.00 N 0.25 max Alternative grade of SUS301
SUS 302 302 1.4319 0.15 max 1.00 max 2.00 max 0.045 max 0.030 max 8.00 – 10.00 17.00 – 19.00 Alternative grade of SUS302
SUS 303 303 1.4305 0.15 max 1.00 max 2.00 max 0.20 max 0.15 min 8.00 – 10.00 17.00 – 19.00 (<0.60) Automatic machined parts such as screw, bolt
SUS 303Se 303Se 0.15 max 1.00 max 2.00 max 0.20 max 0.060 max 8.00 – 10.00 17.00 – 19.00 Se 0.15 min Screw
SUS 303Cu 0.15 max 1.00 max 3.00 max 0.20 max 0.15 min 8.00 – 10.00 17.00 – 19.00 Cu 1.50 – 3.50 Improved free cutting and cold heading quality, Shafts Usage 
SUS 304 304 1.4301 0.08 max 1.00 max 2.00 max 0.045 max 0.030 max 8.00 – 10.00 18.00 – 20.00 General corrosion resistance, food processing , equipment parts
SUS 304L 304L 1.4306 0.030 max 1.00 max 2.00 max 0.045 max 0.030 max 9.00 – 13.00 18.00 – 20.00 To avoid intergranular corrosion (e.g. welding by SUS304)
SUS 304N1 304N 0.08 max 1.00 max 2.50 max 0.045 max 0.030 max 7.00 – 10.50 18.00 – 20.00 N 0.10 – 0.25 Structural parts for higher strength
SUS 304J3 0.08 max 1.00 max 2.00 max 0.045 max 0.030 max 8.00 – 10.50 17.00 – 19.00 Cu 1.00 – 3.00 Natural properties between 304 and XM-7,Bolts and Nuts Uasge
SUS 305 305 0.12 max 1.00 max 2.00 max 0.045 max 0.030 max 10.50 – 13.00 17.00 – 19.00 Low work hardening. Cold heading quality
SUS 309S 309S 1.4833 0.08 max 1.00 max 2.00 max 0.045 max 0.030 max 12.00 – 15.00 22.00 – 24.00 Superior corrosion and oxidation resistance to 304, Parts for chemical plant., heat treatment, furnace
SUS 310S 310S 1.4845 0.08 max 1.50 max 2.00 max 0.045 max 0.030 max 19.00 – 22.00 24.00 – 26.00 Superior corrosion and heat resistance to SUS309S. Parts for thermal exchanger in furnace.
SUS 316 316 1.4401/1.4436 0.08 max 1.00 max 2.00 max 0.045 max 0.030 max 10.00 – 14.00 16.00 – 18.00 2.00 – 3.00 More corrosion-resisting than 304. Anti-rust purpose . Chemical plant equipment(paper, soap, chemical textile, fertilizer)
SUS 316L 316L 1.4404/1.4435 0.030 max 1.00 max 2.00 max 0.045 max 0.030 max 12.00 – 15.00 16.00 – 18.00 2.00 – 3.00 Extreme low carbon 316. High anti-corrosion
SUS 316F 0.08 max 1.00 max 2.00 max 0.045 max 0.10 min 10.00 -14.00 16.00 – 18.00 2.00 – 3.00 Enhanced free cutting quality by adding sulpur into 316. Watchband Usage
SUS 317 317 1.4449 0.08 max 1.00 max 2.00 max 0.045 max 0.030 max 11.00 – 15.00 18.00 – 20.00 3.00 – 4.00 Environment which requires corrosion resistance (e.g. dyeing machine)
SUS 317L 317L 1.4438 0.030 max 1.00 max 2.00 max 0.045 max 0.030 max 11.00 – 15.00 18.00 – 20.00 3.00 – 4.00 Improved intergranular corrosion resistance of SUS317 (e.g. dyeing machine)
SUS 321 321 1.4541 0.08 max 1.00 max 2.00 max 0.045 max 0.030 max 9.00 – 13.00 17.00 – 19.00 Ti 5*C% min Ti addition. High temperature purpose. Parts which are unable to be heat treated after welding. equipment parts used between 730 900 thermal condition
SUS 347 347 1.4550 0.08 max 1.00 max 2.00 max 0.045 max 0.030 max 9.00 – 13.00 17.00 – 19.00 Nb10*C% min Superior intergranular corrosion resistance
SUS XM7 302HQ 0.08 max 1.00 max 2.00 max 0.045 max 0.030 max 8.50 – 10.50 17.00 – 19.00 Cu 3.00 – 4.00 Cu addition into 304. Enhanced cold heading quality
Ferrite & Martensite series (Series 4)
Grade Chemical composition Unit :%
JIS AISI DIN C Si Mn P S Ni Cr Mo Others Characteristics and Application
SUS430 430 1.4016 012 MAX 0.75 max 1.00 max 0.040 max 0.030 max 16.00 – 18.00 Good    anti-corrosion. Bolt, Nut, Scrubber
SUS430F 430F 1.4104 012 MAX 1.00 max 1.25 max 0.060 max 0.15 min 16.00 – 18.00 (<0.60) Bolt,Nut
SUS434 434 1.4113 012 MAX 1.00 max 1.00 max 0.040 max 0.030 max 16.00 – 18.00 0.75 – 1.25 Improved grade. Better anti-corrosion    than 430. Automobile exterior equipment.
SUS403 403 1.4000 0.15 MAX 0.50 max 1.00 max 0.040 max 0.030 max (<0.60) 11.50 – 13.00 Turbine blade, compressor,    valve parts
SUS410 410 1.4006 0.15 MAX 1.00 max 1.00 max 0.040 max 0.030 max (<0.60) 11.50 – 13.00 High machinability. Fasteners, Pump    shaft
SUS410F2 0.15 MAX 1.00 max 1.00 max 0.040 max 0.030 max (<0.60) 11.50 – 13.00 Pb 0.05 to 0.30 Machinery parts
SUS416 416 1.4005 0.15 MAX 1.00 max 1.25 max 0.060 max 0.15 min (<0.60) 12.00 – 14.00 (<0.60) Better free cutting for automatic    lathe. Screw, bolt , nut usage
SUS420J1 0.16 – 0.25 1.00 max 1.00 max 0.040 max 0.030 max (<0.60) 12.00 – 14.00 Motor shaft, machinery    parts
SUS402J2 1.4031 0.26 – 0.40 1.00 max 1.00 max 0.040 max 0.030 max (<0.60) 12.00 – 14.00 Excellent hardness. Machine shafts,    Electric shafts
SUS420F 0.26 – 0.40 1.00 max 1.25 max 0.060 max 0.15 min (<0.60) 12.00 – 14.00 (<0.60) Improved grade. Better machinability    than 420J2. Valve parts, Shaft, Machining tool parts
SUS420F2 0.26 – 0.40 1.00 max 1.00 max 0.040 max 0.030 max (<0.60) 12.00 – 14.00 Pb 0.05 – 0.30 High strength machinery    parts. 
SUS431 431 1.4057 0.20 max 1.00 max 1.00 max 0.040 max 0.030 max 1.25 – 2.50 15.00 – 17.00 Nozzle, bearing
SUS440C 440C 1.4125 0.95 – 1.20 1.00 max 1.00 max 0.040 max 0.030 max (<0.60) 16.00 – 18.00 (<0.75) Highest hardness among Heat-resistant    stainless steel, for nozzle, bearing
SUS361J1 0.09 max 1.00 max 1.00 max 0.040 max 0.030 max 7.00-8.50 16.00 – 18.00 AI 0.75 – 1.50 Spring