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 0.20 0.40
Mn 0.55 0.85
Cr 0.65 0.85
Mo - 0.25
V - 0.25
W - -
Ni 1.25 1.75

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)
234 (≥) 327 (≥) 34 41 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

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
168 (≥) 691 (≥) 34 11 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 311
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
619 746 433
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