L4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of L4

Location » Home » Grades > Tool Die Steels > L4

SAE L4

Profile

This page is mainly introduced the L4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of L4,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Low Alloy Tool Steel

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.90  1.10
Si 0.10  0.40
Mn 0.50  0.70
Cr 1.45  1.55
Mo  
V 0.20  0.30
W  

Mechanical Properties

Tensile strength 356~178 σb/MPa
Yield Strength 867 σ 0.2 ≥/MPa
Elongation 09 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 050~689 -
HRC 30 -

Physical Properties

Thermal expansion 29-68 e-6/K
Thermal conductivity 09-68 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 0836-8151 째C
Density 2177-9272 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

Size Availability

Steel Grade Specification Processing range(mm)
L4 Tool Die Steels Round Bar and Hollow Bar Φ1 to Φ2000
Square and Flat Steel Φ10 to Φ100
Plate and Sheet 0.08-800(Thickness)*10-1500(Width)*Length
Tube or Pipe OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
Coil and Strip Steel THK:0.1mm Width:1500mm
Forged Ring/Cylindrical/Disk

Technical specification/standard for download

Hot keywords:L4
Previous: L3
Next: L5