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ASTM A387 Grade 91 Class 2 vs. SAE-AISI H26 Steel

Both ASTM A387 grade 91 class 2 and SAE-AISI H26 steel are iron alloys. They have 81% 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 A387 grade 91 class 2 and the bottom bar is SAE-AISI H26 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
80
Tensile Strength: Ultimate (UTS), MPa 670
720 to 2100

Thermal Properties

Latent Heat of Fusion, J/g 270
240
Melting Completion (Liquidus), °C 1460
1810
Melting Onset (Solidus), °C 1420
1760
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 26
22
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
45
Density, g/cm3 7.8
9.3
Embodied Carbon, kg CO2/kg material 2.6
8.1
Embodied Energy, MJ/kg 37
120
Embodied Water, L/kg 88
90

Common Calculations

PREN (Pitting Resistance) 13
34
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 24
22 to 63
Strength to Weight: Bending, points 22
19 to 39
Thermal Diffusivity, mm2/s 6.9
5.6
Thermal Shock Resistance, points 19
22 to 63

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Carbon (C), % 0.080 to 0.12
0.45 to 0.55
Chromium (Cr), % 8.0 to 9.5
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 87.3 to 90.3
73.3 to 77.5
Manganese (Mn), % 0.3 to 0.6
0.15 to 0.4
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
0 to 0.3
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0.2 to 0.5
0.15 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 0
17.3 to 19
Vanadium (V), % 0.18 to 0.25
0.75 to 1.3
Zirconium (Zr), % 0 to 0.010
0