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

Chemical composition % of the ladle analysis of grade CNS 303

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%)
Max 0.15 Max 1.00 Max 2.00 Max 0.20 Max 0.15 17.00-19.00 8.00-10.00
CNS standard stainless steel austenite size
Mechanical properties of grade CNS 303
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)
889 (≥) 343 (≥) 32 43 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 311
Physical properties of grade CNS 303
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
338 (≥) 662 (≥) 43 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 143
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
951 862 353
CNS 303 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
GH3030 CNS China
Classification and designation for superalloys and high temperature intermetallic materials
GH3039 CNS China
Classification and designation for superalloys and high temperature intermetallic materials
303 CNS China
Stainless Steel Billets and Bars for Forging
A 314 303 CNS China
Stainless Steel Billets and Bars for Forging
A 473 303 CNS China
Stainless Steel Forgings
A 581 Type 303 CNS China
Free-Machining Stainless Steel Wire and Wire Rods
A 582 Type 303 CNS China
Standard Specification for Free-Machining Stainless Steel Bars
A 895 Type 303 CNS China
Free-Machining Stainless Steel Plate, Sheet, and Strip
A 959 Type 303 CNS China
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
A 314 S30300 CNS China
Stainless Steel Billets and Bars for Forging
A 473 S30300 CNS China
Stainless Steel Forgings
A 581 S30300 CNS China
Free-Machining Stainless Steel Wire and Wire Rods
A 582 S30300 CNS China
Standard Specification for Free-Machining Stainless Steel Bars
A 895 S30300 CNS China
Standard Specification for Free-Machining Stainless Steel Bars
F 837 Class A1-50 S30300 CNS China
Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)
F 837 Class A1-55 S30300 CNS China
Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)
F 837 Class A1-70 S30300 CNS China
Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)
F738 Class A1-50 S30300 CNS China
Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs
F738 Class A1-70 S30300 CNS China
Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs
F738 Class A1-80 S30300 CNS China
Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs

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