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C250 Application:Australia Structural steel
Category Type Steel grade Standard Country
Grades Special Alloy C250 AS Australia

Chemical composition % of the ladle analysis of grade C250

C(%) Si(%) P(%) S(%)
0.25 0.4 0.04 0.04
C250
Mechanical properties of grade C250
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)
526 (≥) 984 (≥) 14 13 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 343
Physical properties of grade C250
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
387 (≥) 826 (≥) 41 23 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 213
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
588 483 539
C250 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
Maraging Steel 250 / C250 AS Australia
Structural and constructional steels
K92890 AS Australia
Structural and constructional steels
1.6359 AS Australia
Structural and constructional steels
C250, 250, UNS K92890, 1.6359, Alloy 250 AS Australia
C250 is used for missile and ejector systems, slat tracks and drive shafts.

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