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ASTM Grade HN Steel vs. SAE-AISI P5 Steel

Both ASTM grade HN steel and SAE-AISI P5 steel are iron alloys. They have 54% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HN steel and the bottom bar is SAE-AISI P5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 500
370 to 1980

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 13
45
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 26
2.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.6
1.5
Embodied Energy, MJ/kg 66
20
Embodied Water, L/kg 180
56

Common Calculations

PREN (Pitting Resistance) 22
2.3
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
13 to 70
Strength to Weight: Bending, points 18
15 to 45
Thermal Diffusivity, mm2/s 3.5
12
Thermal Shock Resistance, points 11
12 to 65

Alloy Composition

Carbon (C), % 0.2 to 0.5
0 to 0.1
Chromium (Cr), % 19 to 23
2.0 to 2.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 44.9 to 57.8
95.7 to 97.8
Manganese (Mn), % 0 to 2.0
0.2 to 0.6
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 23 to 27
0 to 0.35
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.030