L6 Tool Die Steels

L6 - Specification & Application

Low Alloy Tool Steel

Chemical composition(wt.%) of L6 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.65 0.75
Si 0.10 0.50
Mn 0.25 0.80
P - 0.030
S - 0.030
Cr 0.60 1.20
Mo - 0.50
V - -
W - -
Ni+Cu - 0.75
Ni 1.25 2.00

L6 - Detail

Low Alloy Tool Steel

Mechanical properties of grade L6

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)
742 (≥) 514 (≥) 44 14 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical properties of grade L6

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
179 (≥) 362 (≥) 43 14 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 141
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
958 855 372
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