SAE-AISI A3 (T30103) Air-Hardening Steel
Tool Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength700 to 2150MPa
Yield StrengthUnknown
Brinell HardnessUnknown
Maximum Service TemperatureUnknown
Chemical Composition
C
1.2 to 1.3%
CR
4.8 to 5.5%
NI
0 to 0.3%
MO
0.9 to 1.4%
MN
0.4 to 0.6%
SI
0 to 0.5%
P
0 to 0.030%
S
0 to 0.030%
CU
0 to 0.25%
V
0.8 to 1.4%
FE
88.7 to 92%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Poisson's Ratio
0.29
Shear Modulus
73 GPa
Tensile Strength: Ultimate (UTS)
700 to 2150 MPa
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
260 J/g
Melting Completion (Liquidus)
1450 °C
Melting Onset (Solidus)
1410 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
37 W/m-K
Thermal Diffusivity
10 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
23 to 70 points
Electrical
Electrical Conductivity: Equal Volume
8.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
9.7 % IACS
Calculated
PREN (Pitting Resistance)
8.9
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
25 to 77 points
Strength to Weight: Bending
23 to 48 points
Environmental
Base Metal Price
6.0 % relative
Embodied Carbon
4.4 kg CO 2 /kg material
Embodied Energy
67 MJ/kg
Embodied Energy
67 MJ/kg 29 x 10 3 BTU/lb
Embodied Water
78 L/kg
Embodied Water
78 L/kg 9.3 gal/lb
Registered Designations & Aliases
SAE-AISI A3 (T30103) Air-Hardening SteelT30103
Standards
ASTM A681 ASTM A681: Standard Specification for Tool Steels Alloy
ASTM A681 ASTM A681: Standard Specification for Tool Steels Alloy Tool Steels, 5th ed., George Roberts et al., 1998 Tool Steels: Properties and Performance, Rafael A. Mesquita (editor), 2016