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25CrMo4 Application:Fasteners with stainless steel and nickel alloy for high temperature and low temperature (NF-EN 10269(1999))
Category Type Steel grade
Grades Special Alloy 25CrMo4

Chemical composition % of the ladle analysis of grade 25CrMo4

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Mo(%)
0.22-0.29 Max 0.40 0.60-0.90 Max 0.035 Max 0.035 0.90-1.20 0.15-0.30
25CrMo4
Mechanical properties of grade 25CrMo4
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)
628 (≥) 999 (≥) 44 12 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 321
Physical properties of grade 25CrMo4
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
864 (≥) 238 (≥) 21 33 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 341
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
842 684 716
25CrMo4 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
25CrMo4
Steels for quenching and tempering for construction purposes - Technical delivery conditions

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