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ASTM Grade HH Steel vs. S32654 Stainless Steel

Both ASTM grade HH steel and S32654 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HH steel and the bottom bar is S32654 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
220
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 11
45
Fatigue Strength, MPa 150
450
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
82
Tensile Strength: Ultimate (UTS), MPa 580
850
Tensile Strength: Yield (Proof), MPa 270
490

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Maximum Temperature: Corrosion, °C 440
440
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1360
1410
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 14
11
Thermal Expansion, µm/m-K 17
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 20
34
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 3.7
6.4
Embodied Energy, MJ/kg 53
87
Embodied Water, L/kg 180
220

Common Calculations

PREN (Pitting Resistance) 27
57
Resilience: Ultimate (Unit Rupture Work), MJ/m3 53
330
Resilience: Unit (Modulus of Resilience), kJ/m3 190
570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
29
Strength to Weight: Bending, points 20
25
Thermal Diffusivity, mm2/s 3.8
2.9
Thermal Shock Resistance, points 12
19

Alloy Composition

Carbon (C), % 0.2 to 0.5
0 to 0.020
Chromium (Cr), % 24 to 28
24 to 25
Copper (Cu), % 0
0.3 to 0.6
Iron (Fe), % 52.9 to 64.8
38.3 to 45.3
Manganese (Mn), % 0 to 2.0
2.0 to 4.0
Molybdenum (Mo), % 0 to 0.5
7.0 to 8.0
Nickel (Ni), % 11 to 14
21 to 23
Nitrogen (N), % 0
0.45 to 0.55
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.0050