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S33550 Stainless Steel vs. ASTM Grade HD Steel

Both S33550 stainless steel and ASTM grade HD steel are iron alloys. They have 87% 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 S33550 stainless steel and the bottom bar is ASTM grade HD steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
9.1
Fatigue Strength, MPa 270
140
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 79
80
Tensile Strength: Ultimate (UTS), MPa 680
590
Tensile Strength: Yield (Proof), MPa 310
270

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 470
460
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1400
1410
Melting Onset (Solidus), °C 1360
1370
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 24
17
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.3
3.1
Embodied Energy, MJ/kg 61
45
Embodied Water, L/kg 190
180

Common Calculations

PREN (Pitting Resistance) 30
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
44
Resilience: Unit (Modulus of Resilience), kJ/m3 250
180
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 24
21
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 3.9
4.3
Thermal Shock Resistance, points 15
19

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.5
Cerium (Ce), % 0.025 to 0.070
0
Chromium (Cr), % 25 to 28
26 to 30
Iron (Fe), % 48.8 to 58.2
58.4 to 70
Lanthanum (La), % 0.025 to 0.070
0
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 16.5 to 20
4.0 to 7.0
Niobium (Nb), % 0.050 to 0.15
0
Nitrogen (N), % 0.18 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040