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ASTM Grade HD Steel vs. SAE-AISI M44 Steel

Both ASTM grade HD steel and SAE-AISI M44 steel are iron alloys. They have 70% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HD steel and the bottom bar is SAE-AISI M44 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 590
870 to 2290

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Melting Completion (Liquidus), °C 1410
1590
Melting Onset (Solidus), °C 1370
1540
Specific Heat Capacity, J/kg-K 490
440
Thermal Conductivity, W/m-K 16
14
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 17
43
Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 3.1
9.9
Embodied Energy, MJ/kg 45
150
Embodied Water, L/kg 180
170

Common Calculations

PREN (Pitting Resistance) 29
35
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
23
Strength to Weight: Axial, points 21
28 to 75
Strength to Weight: Bending, points 20
24 to 46
Thermal Diffusivity, mm2/s 4.3
3.7
Thermal Shock Resistance, points 19
27 to 70

Alloy Composition

Carbon (C), % 0 to 0.5
1.1 to 1.2
Chromium (Cr), % 26 to 30
4.0 to 4.8
Cobalt (Co), % 0
11 to 12.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 58.4 to 70
65.3 to 70.6
Manganese (Mn), % 0 to 1.5
0.2 to 0.4
Molybdenum (Mo), % 0 to 0.5
6.0 to 7.0
Nickel (Ni), % 4.0 to 7.0
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0.3 to 0.55
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
5.0 to 5.8
Vanadium (V), % 0
1.9 to 2.2