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ASTM Grade HP Steel vs. AISI W5 Steel

Both ASTM grade HP steel and AISI W5 steel are iron alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HP steel and the bottom bar is AISI W5 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 78
72
Tensile Strength: Ultimate (UTS), MPa 490
600 to 2360

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1370
1450
Melting Onset (Solidus), °C 1330
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
45
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 34
2.3
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.8
1.6
Embodied Energy, MJ/kg 82
21
Embodied Water, L/kg 220
48

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
21 to 84
Strength to Weight: Bending, points 17
20 to 50
Thermal Diffusivity, mm2/s 3.2
12
Thermal Shock Resistance, points 11
20 to 78

Alloy Composition

Carbon (C), % 0.35 to 0.75
1.1 to 1.2
Chromium (Cr), % 24 to 28
0.4 to 0.6
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 29.2 to 42.7
96.6 to 98.4
Manganese (Mn), % 0 to 2.0
0.1 to 0.4
Molybdenum (Mo), % 0 to 0.5
0 to 0.1
Nickel (Ni), % 33 to 37
0 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.5
0.1 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
0 to 0.15
Vanadium (V), % 0
0 to 0.1