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Chemical composition % of the ladle analysis of grade CNS 304

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％)
Max 0.08 Max 1.00 Max 2.00 0.045 0.03 18.0-20.0 8.0-10.5
CNS 304
Mechanical properties of grade CNS 304
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)
788 (≥) 689 (≥) 21 12 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 244
Physical properties of grade CNS 304
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
761 (≥) 492 (≥) 11 31 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 142
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
484 262 144
CNS 304 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
Steel for intake valves
S63005
Steel for intake valves
Z1CNS17-15
Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Z11CNS17-07Az
Stainless steels for general purposes. Plates, wide strips and strips
Z15CNS25-20
Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Z17CNS20-12
Iron and steel. Austenitic and austenic-ferritic stainless steels plates for boilers and pressure vessels
Z80CNS20-02
Valve steels and alloys for internal combustion engines
GH3044
Classification and designation for superalloys and high temperature intermetallic materials
18-8 Type 304
Steel, corrosion resistant (18-8) plate, sheet and strip
304
Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings
304
Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings
304
Steel plate, corrosion resistant, austenitic (UNS S30400, S30403, S31600, S34700, and S34800)
A 167 Type 304
Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip
A 182 F 304
Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
A 213 TP304
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
304 L
Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
304L
Steel, Corrosion-Resistant, Sheet, Strip, and Plate 19Cr - 9.5Ni (304L) Solution Heat Treated
304L
Tubing, steel, corrosion and heat resistant, for aerospace vehicle hydraulic systems assembled by brazing
A 167 Type 304L
Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip
A 182 F 304L
Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

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