Annealed S4 Tool Steel
Tool Steels
Property Overview
Density7.7g/cm³
Elastic Modulus190GPa
Tensile Strength670MPa
Yield Strength390MPa
Brinell Hardness200HB
Maximum Service TemperatureUnknown
Chemical Composition
C
0.5 to 0.65%
CR
0.1 to 0.5%
MN
0.6 to 1.0%
SI
1.8 to 2.3%
P
0 to 0.030%
S
0 to 0.030%
V
0.15 to 0.35%
FE
95.2 to 96.9%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
22 %
Fatigue Strength
280 MPa
Poisson's Ratio
0.29
Shear Modulus
72 GPa
Shear Strength
420 MPa
Tensile Strength: Ultimate (UTS)
670 MPa
Tensile Strength: Yield (Proof)
390 MPa
Hardness
Brinell Hardness
200
Physical
Density
7.7 g/cm 3
Thermal
Latent Heat of Fusion
280 J/g
Melting Completion (Liquidus)
1430 °C
Melting Onset (Solidus)
1390 °C
Specific Heat Capacity
480 J/kg-K
Thermal Conductivity
44 W/m-K
Thermal Diffusivity
12 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
20 points
Electrical
Electrical Conductivity: Equal Volume
7.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.7 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
130 MJ/m 3
Resilience: Unit (Modulus of Resilience)
420 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
24 points
Strength to Weight: Bending
22 points
Environmental
Base Metal Price
2.2 % relative
Embodied Carbon
2.0 kg CO 2 /kg material
Embodied Energy
29 MJ/kg
Embodied Energy
29 MJ/kg 12 x 10 3 BTU/lb
Embodied Water
48 L/kg
Embodied Water
48 L/kg 5.8 gal/lb
Registered Designations & Aliases
Annealed S4 Tool Steel
Standards
ASTM A681 ASTM A681: Standard Specification for Tool Steels Alloy
ASTM A681 ASTM A681: Standard Specification for Tool Steels Alloy Tool Steels: Properties and Performance, Rafael A. Mesquita (editor), 2016