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ASTM A369 Grade FP12 vs. SAE-AISI H14 Steel

Both ASTM A369 grade FP12 and SAE-AISI H14 steel are iron alloys. They have 90% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP12 and the bottom bar is SAE-AISI H14 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 470
710 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1470
1530
Melting Onset (Solidus), °C 1430
1490
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 45
35
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
9.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
10

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
15
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 1.6
2.7
Embodied Energy, MJ/kg 21
39
Embodied Water, L/kg 52
73

Common Calculations

PREN (Pitting Resistance) 2.8
13
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
24 to 69
Strength to Weight: Bending, points 17
22 to 44
Thermal Diffusivity, mm2/s 12
9.3
Thermal Shock Resistance, points 14
24 to 68

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.35 to 0.45
Chromium (Cr), % 0.8 to 1.3
4.8 to 5.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 96.8 to 98.4
86.5 to 89.9
Manganese (Mn), % 0.3 to 0.61
0.2 to 0.5
Molybdenum (Mo), % 0.44 to 0.65
0
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.5
0.8 to 1.2
Sulfur (S), % 0 to 0.025
0 to 0.030
Tungsten (W), % 0
4.0 to 5.3