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ASTM Grade HP Steel vs. SAE-AISI H26 Steel

Both ASTM grade HP steel and SAE-AISI H26 steel are iron alloys. They have 41% of their average alloy composition in common. There are 22 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 grade HP steel and the bottom bar is SAE-AISI H26 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
80
Tensile Strength: Ultimate (UTS), MPa 490
720 to 2100

Thermal Properties

Latent Heat of Fusion, J/g 320
240
Melting Completion (Liquidus), °C 1370
1810
Melting Onset (Solidus), °C 1330
1760
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 12
22
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 34
45
Density, g/cm3 7.9
9.3
Embodied Carbon, kg CO2/kg material 5.8
8.1
Embodied Energy, MJ/kg 82
120
Embodied Water, L/kg 220
90

Common Calculations

PREN (Pitting Resistance) 27
34
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 17
22 to 63
Strength to Weight: Bending, points 17
19 to 39
Thermal Diffusivity, mm2/s 3.2
5.6
Thermal Shock Resistance, points 11
22 to 63

Alloy Composition

Carbon (C), % 0.35 to 0.75
0.45 to 0.55
Chromium (Cr), % 24 to 28
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 29.2 to 42.7
73.3 to 77.5
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 33 to 37
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.5
0.15 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
17.3 to 19
Vanadium (V), % 0
0.75 to 1.3