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CNS 303Se Application:CNS standard stainless steel austenite size
Category Type Steel grade Standard Country
Grades Special Alloy CNS 303Se CNS China

Chemical composition % of the ladle analysis of grade CNS 303Se

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Other(%)
Max 0.15 Max 1.00 Max 2.00 Max 0.20 Max 0.060 17.00-19.00 8.00-10.00 Se: Min 0.15
CNS standard stainless steel austenite size
Mechanical properties of grade CNS 303Se
Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
692 (≥) 534 (≥) 13 22 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 434
Physical properties of grade CNS 303Se
Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
214 (≥) 819 (≥) 21 22 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 331
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
813 414 878
CNS 303Se Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
303Se CNS China
Stainless and heat resisting steels
A 314 303Se CNS China
Stainless and heat resisting steels
A 473 303 Se CNS China
Austenitic stainless steel forgings for general use
A 511 MT303Se CNS China
Austenitic stainless steel forgings for general use
A 581 Type 303Se CNS China
Free machining stainless and heat resisting steel wire
A 582 Type 303Se CNS China
Free-machining stainless steel bars
A 895 Type 303Se CNS China
Free-machining stainless steel bars
A 959 Type 303Se CNS China
Specifying harmonized standard grade compositions for wrought stainless steels
F 593 303 Se CNS China
Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs
F 594 303Se CNS China
Standard Specification for Stainless Steel Nuts
F 880 Class A1-50 303Se CNS China
Standard Specification for Stainless Steel Socket Set Screws (Metric)
F 880 Class A1-70 303Se CNS China
Standard Specification for Stainless Steel Socket Set Screws (Metric)
SUS 303Se CNS China
Standard Specification for Stainless Steel Socket Set Screws (Metric)
SUS303Se CNS China
Standard Specification for Stainless Steel Socket Set Screws (Metric)
A 314 S30323 CNS China
Stainless Steel Billets and Bars for Forging
A 473 S30323 CNS China
Stainless Steel Forgings
A 581 S30323 CNS China
Free-Machining Stainless Steel Wire and Wire Rods
A 582 S30323 CNS China
Standard Specification for Free-Machining Stainless Steel Bars
A 895 S30323 CNS China
Free-Machining Stainless Steel Plate, Sheet, and Strip
F738 Class A1-50 S30323 CNS China
Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs

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