ГОСТ 4ΧΜΗΦC

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ГОСТ 4ΧΜΗΦC

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4ΧΜΗΦC Application:Carbide for cutting tools

Chemical composition(mass fraction)(wt.%) of the 4ΧΜΗΦC
C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) V(%) W(%) Cu(%) Ti(%) Other(%)
0.35-0.42 0.70-1.00 0.15-0.40 ≤0.003 ≤0.003 1.25-1.55 1.20-1.60 0.65-0.85 0.35-0.50 ≤0.20 ≤0.30 ≤0.03 Zr:0.03-0.09，B:0.002-0.004

Mechanical properties of grade 4ΧΜΗΦC

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition HBW
726 (≥) 763 (≥) 24 24 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical properties of grade 4ΧΜΗΦC

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm
563 (≥) 587 (≥) 31 32 21 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2		 - - -
211 946 716 - - -

4ΧΜΗΦC 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