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SAE-AISI T15 Steel vs. ASTM Grade HI Steel

Both SAE-AISI T15 steel and ASTM grade HI 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 SAE-AISI T15 steel and the bottom bar is ASTM grade HI steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 830 to 2240
550

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Melting Completion (Liquidus), °C 1690
1400
Melting Onset (Solidus), °C 1640
1350
Specific Heat Capacity, J/kg-K 430
490
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 43
23
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 16
4.1
Embodied Energy, MJ/kg 250
59
Embodied Water, L/kg 140
200

Common Calculations

PREN (Pitting Resistance) 27
29
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 26 to 71
20
Strength to Weight: Bending, points 22 to 43
19
Thermal Diffusivity, mm2/s 5.6
3.9
Thermal Shock Resistance, points 26 to 70
12

Alloy Composition

Carbon (C), % 1.5 to 1.6
0.2 to 0.5
Chromium (Cr), % 3.8 to 5.0
26 to 30
Cobalt (Co), % 4.8 to 5.3
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 67.5 to 73.5
46.9 to 59.8
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 0 to 1.0
0 to 0.5
Nickel (Ni), % 0 to 0.3
14 to 18
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 0.4
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 11.8 to 13
0
Vanadium (V), % 4.5 to 5.3
0