H10 Special Alloy

Chemical composition%of the ladle analysis of gradeH10

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)Mo(%)V(%)Cu(%)
0.35~0.450.80~1.200.25~0.70≤0.030≤0.0303.00~3.75≤0.752.00~3.000.25~0.75≤0.75
Annealing hardness HBS: 229
Cold pull hardness HBS: 255
Preheat temperature / ℃ : 788
Quenching temperature / ℃ | salt bath furnaces: 1010
Quenching temperature / ℃ | controlled atmosphere furnace: 1024
Holding time/min: 5 to 15
Quenching medium: air cold
Tempering temperature / ℃ : 552
After tempering quartile hardness HRC: 55

Mechanical properties of gradeH10

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)
747(≥) 233(≥) 22 21 43 Solution and Aging,Annealing,Ausaging,Q+T,etc 441

Physical properties of grade H10

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
252(≥) 245(≥) 13 43 34 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
823 821 493

H10 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