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CNS 303Se Application:China Taiwan Stainless steel
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 0.20 0.06 17.0-19.0 8.00-10.00 Se Max 0.25
CNS 303Se
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)
694 (≥) 675 (≥) 13 12 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 443
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
776 (≥) 159 (≥) 14 13 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 144
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
397 931 762
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
HNV5 CNS China
Steel for intake valves
S63005 CNS China
Steel for intake valves
Z1CNS17-15 CNS China
Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Z11CNS17-07Az CNS China
Stainless steels for general purposes. Plates, wide strips and strips
Z15CNS25-20 CNS China
Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Z17CNS20-12 CNS China
Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Z80CNS20-02 CNS China
Valve steels and alloys for internal combustion engines
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)

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