Annealed H12 Tool Steel
Tool Steels
Property Overview
Density7.9g/cm³
Elastic Modulus190GPa
Tensile Strength690MPa
Yield Strength330MPa
Brinell Hardness210HB
Maximum Service TemperatureUnknown
Chemical Composition
C
0.3 to 0.4%
CR
4.8 to 5.5%
NI
0 to 0.3%
MO
1.3 to 1.8%
MN
0.2 to 0.5%
SI
0.8 to 1.2%
P
0 to 0.030%
S
0 to 0.030%
CU
0 to 0.25%
V
0 to 0.5%
W
1.0 to 1.7%
FE
87.8 to 91.7%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
21 %
Fatigue Strength
230 MPa
Poisson's Ratio
0.29
Shear Modulus
75 GPa
Shear Strength
440 MPa
Tensile Strength: Ultimate (UTS)
690 MPa
Tensile Strength: Yield (Proof)
330 MPa
Hardness
Brinell Hardness
210
Rockwell B Hardness
95
Physical
Density
7.9 g/cm 3
Thermal
Latent Heat of Fusion
270 J/g
Melting Completion (Liquidus)
1480 °C
Melting Onset (Solidus)
1440 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
36 W/m-K
Thermal Diffusivity
9.8 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
22 points
Electrical
Electrical Conductivity: Equal Volume
8.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
9.5 % IACS
Calculated
PREN (Pitting Resistance)
12
Resilience: Ultimate (Unit Rupture Work)
120 MJ/m 3
Resilience: Unit (Modulus of Resilience)
290 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
24 points
Strength to Weight: Bending
22 points
Environmental
Base Metal Price
9.0 % relative
Embodied Carbon
2.9 kg CO 2 /kg material
Embodied Energy
41 MJ/kg
Embodied Energy
41 MJ/kg 18 x 10 3 BTU/lb
Embodied Water
76 L/kg
Embodied Water
76 L/kg 9.0 gal/lb
Registered Designations & Aliases
Annealed H12 Tool Steel
Standards
ASTM A681 ASTM A681: Standard Specification for Tool Steels Alloy
SAE J437 SAE J437: Selection and Heat Treatment of Tool and Die Steels
SAE J437 SAE J437: Selection and Heat Treatment of Tool and Die Steels 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