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SAE-AISI H12 Steel vs. EN 1.4658 Stainless Steel

Both SAE-AISI H12 steel and EN 1.4658 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H12 steel and the bottom bar is EN 1.4658 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 75
81
Tensile Strength: Ultimate (UTS), MPa 690 to 1850
900

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1480
1450
Melting Onset (Solidus), °C 1440
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 36
16
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
25
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.9
4.5
Embodied Energy, MJ/kg 41
61
Embodied Water, L/kg 76
200

Common Calculations

PREN (Pitting Resistance) 12
49
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 65
32
Strength to Weight: Bending, points 22 to 42
26
Thermal Diffusivity, mm2/s 9.8
4.3
Thermal Shock Resistance, points 22 to 60
24

Alloy Composition

Carbon (C), % 0.3 to 0.4
0 to 0.030
Chromium (Cr), % 4.8 to 5.5
26 to 29
Cobalt (Co), % 0
0.5 to 2.0
Copper (Cu), % 0 to 0.25
0 to 1.0
Iron (Fe), % 87.8 to 91.7
50.9 to 63.7
Manganese (Mn), % 0.2 to 0.5
0 to 1.5
Molybdenum (Mo), % 1.3 to 1.8
4.0 to 5.0
Nickel (Ni), % 0 to 0.3
5.5 to 9.5
Nitrogen (N), % 0
0.3 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.8 to 1.2
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 1.0 to 1.7
0
Vanadium (V), % 0 to 0.5
0