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S32550 Stainless Steel vs. ASTM Grade HD Steel

Both S32550 stainless steel and ASTM grade HD steel are iron alloys. They have a moderately high 95% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S32550 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, % 21
9.1
Fatigue Strength, MPa 400
140
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 80
80
Tensile Strength: Ultimate (UTS), MPa 860
590
Tensile Strength: Yield (Proof), MPa 620
270

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 450
460
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 20
17
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.8
3.1
Embodied Energy, MJ/kg 53
45
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 40
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
44
Resilience: Unit (Modulus of Resilience), kJ/m3 940
180
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 31
21
Strength to Weight: Bending, points 26
20
Thermal Diffusivity, mm2/s 4.4
4.3
Thermal Shock Resistance, points 23
19

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.5
Chromium (Cr), % 24 to 27
26 to 30
Copper (Cu), % 1.5 to 2.5
0
Iron (Fe), % 57.2 to 67
58.4 to 70
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 2.9 to 3.9
0 to 0.5
Nickel (Ni), % 4.5 to 6.5
4.0 to 7.0
Nitrogen (N), % 0.1 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