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CO-1 Application:Casting tool steels and powder metallurgy tool steel
Category Type Steel grade Standard Country
Grades Special Alloy CO-1 ASTM USA

Chemical composition % of the ladle analysis of grade CO-1

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) V(%) W(%)
0.85-1.00 Max 1.50 1.00-1.30 Max 0.030 Max 0.030 0.40-1.00 Max 0.30 0.40-0.60
Standard:ASTM A597-1999
CO-1
Mechanical properties of grade CO-1
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)
539 (≥) 529 (≥) 23 12 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 343
Physical properties of grade CO-1
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
995 (≥) 943 (≥) 11 32 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 114
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
695 876 752
CO-1 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
Nivco-10 ASTM USA
Special Purpose Alloys ("Superalloys")
Fe-Ni29Co-17 ASTM USA
Nickel and nickel alloys. Iron-nickel alloys with particular dilatability

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