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SAE-AISI 1070 Steel vs. ASTM Grade HD Steel

Both SAE-AISI 1070 steel and ASTM grade HD steel are iron alloys. They have 65% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1070 steel and the bottom bar is ASTM grade HD steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 10 to 13
9.1
Fatigue Strength, MPa 270 to 350
140
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 72
80
Tensile Strength: Ultimate (UTS), MPa 640 to 760
590
Tensile Strength: Yield (Proof), MPa 420 to 560
270

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 50
16
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 12
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
17
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
3.1
Embodied Energy, MJ/kg 19
45
Embodied Water, L/kg 46
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59 to 86
44
Resilience: Unit (Modulus of Resilience), kJ/m3 470 to 850
180
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 23 to 27
21
Strength to Weight: Bending, points 21 to 24
20
Thermal Diffusivity, mm2/s 14
4.3
Thermal Shock Resistance, points 21 to 25
19

Alloy Composition

Carbon (C), % 0.65 to 0.75
0 to 0.5
Chromium (Cr), % 0
26 to 30
Iron (Fe), % 98.3 to 98.8
58.4 to 70
Manganese (Mn), % 0.6 to 0.9
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
4.0 to 7.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 2.0
Sulfur (S), % 0 to 0.050
0 to 0.040