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ASTM Grade HI Steel vs. SAE-AISI H26 Steel

Both ASTM grade HI steel and SAE-AISI H26 steel are iron alloys. They have 59% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HI 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 0.27
0.29
Shear Modulus, GPa 79
80
Tensile Strength: Ultimate (UTS), MPa 550
720 to 2100

Thermal Properties

Latent Heat of Fusion, J/g 310
240
Melting Completion (Liquidus), °C 1400
1810
Melting Onset (Solidus), °C 1350
1760
Specific Heat Capacity, J/kg-K 490
410
Thermal Conductivity, W/m-K 15
22
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Base Metal Price, % relative 23
45
Density, g/cm3 7.8
9.3
Embodied Carbon, kg CO2/kg material 4.1
8.1
Embodied Energy, MJ/kg 59
120
Embodied Water, L/kg 200
90

Common Calculations

PREN (Pitting Resistance) 29
34
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 20
22 to 63
Strength to Weight: Bending, points 19
19 to 39
Thermal Diffusivity, mm2/s 3.9
5.6
Thermal Shock Resistance, points 12
22 to 63

Alloy Composition

Carbon (C), % 0.2 to 0.5
0.45 to 0.55
Chromium (Cr), % 26 to 30
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 46.9 to 59.8
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), % 14 to 18
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
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