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SAE-AISI P4 Steel vs. SAE-AISI H43 Steel

Both SAE-AISI P4 steel and SAE-AISI H43 steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P4 steel and the bottom bar is SAE-AISI H43 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
77
Tensile Strength: Ultimate (UTS), MPa 390 to 1980
710 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1460
1530
Melting Onset (Solidus), °C 1420
1480
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 41
30
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 4.4
14
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.8
8.2
Embodied Energy, MJ/kg 23
120
Embodied Water, L/kg 68
100

Common Calculations

PREN (Pitting Resistance) 7.0
31
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 14 to 70
25 to 75
Strength to Weight: Bending, points 15 to 45
22 to 46
Thermal Diffusivity, mm2/s 11
8.3
Thermal Shock Resistance, points 13 to 64
21 to 62

Alloy Composition

Carbon (C), % 0 to 0.12
0.5 to 0.65
Chromium (Cr), % 4.0 to 5.3
3.8 to 4.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 92.3 to 95.3
83.2 to 85.9
Manganese (Mn), % 0.2 to 0.6
0.15 to 0.4
Molybdenum (Mo), % 0.4 to 1.0
7.8 to 8.5
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.1 to 0.4
0.2 to 0.45
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
1.8 to 2.2

Comparable Variants