40CrMnNiMo8-6-4

40CrMnNiMo8-6-4 Tool Die Steels to DIN EN ISO 4957 (1999)

40CrMnNiMo8-6-4 - Specification & Application

  • DIN EN ISO 4957 (1999) - Tool steels (ISO 4957:1999)

Alloyed CrMnNiMo steel

Chemical composition(wt.%) of 40CrMnNiMo8-6-4 grade: to DIN EN ISO 4957 (1999)

Elements Min.（≥） Max.（≤） Similar Remarks
C 0.35 0.45
Si 0.20 0.40
Mn 1.30 1.60
P - 0.035
S - 0.035
Cr 1.80 2.10
Mo 0.15 0.25
V - -
Ni 0.90 1.20

40CrMnNiMo8-6-4 - Detail

Alloyed CrMnNiMo steel

Mechanical properties of grade 40CrMnNiMo8-6-4 DIN EN ISO 4957 (1999)

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)
641 (≥) 943 (≥) 33 31 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical properties of grade 40CrMnNiMo8-6-4 DIN EN ISO 4957 (1999)

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
588 (≥) 446 (≥) 32 41 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 242
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
367 753 539

Equivalent Grade

1 40CrMnNiMo8-6-4 2 40CrMnNiMo8-6-4① 3 40CrMnNiMo8-6-4① 4 EN 40CrMnNiMo8-6-4 5 40CrMnNiMo8-6-4

Equivalent Products

Product shapes we supply:

We can customize the production of 40CrMnNiMo8-6-4 grade, contact us for the best solution.
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