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ASTM Grade HD Steel vs. N08366 Stainless Steel

Both ASTM grade HD steel and N08366 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HD steel and the bottom bar is N08366 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 9.1
34
Fatigue Strength, MPa 140
190
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
80
Tensile Strength: Ultimate (UTS), MPa 590
590
Tensile Strength: Yield (Proof), MPa 270
240

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Maximum Temperature: Corrosion, °C 460
430
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 490
460
Thermal Conductivity, W/m-K 16
13
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 17
33
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 3.1
6.2
Embodied Energy, MJ/kg 45
84
Embodied Water, L/kg 180
200

Common Calculations

PREN (Pitting Resistance) 29
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
160
Resilience: Unit (Modulus of Resilience), kJ/m3 180
150
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 21
20
Strength to Weight: Bending, points 20
19
Thermal Diffusivity, mm2/s 4.3
3.4
Thermal Shock Resistance, points 19
13

Alloy Composition

Carbon (C), % 0 to 0.5
0 to 0.035
Chromium (Cr), % 26 to 30
20 to 22
Iron (Fe), % 58.4 to 70
42.4 to 50.5
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
6.0 to 7.0
Nickel (Ni), % 4.0 to 7.0
23.5 to 25.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030