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S33550 Stainless Steel vs. ASTM Grade HT Steel

Both S33550 stainless steel and ASTM grade HT steel are iron alloys. They have 82% 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 S33550 stainless steel and the bottom bar is ASTM grade HT steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
4.6
Fatigue Strength, MPa 270
130
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 680
500
Tensile Strength: Yield (Proof), MPa 310
270

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 470
400
Maximum Temperature: Mechanical, °C 1100
1010
Melting Completion (Liquidus), °C 1400
1390
Melting Onset (Solidus), °C 1360
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 16
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 24
31
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 4.3
5.4
Embodied Energy, MJ/kg 61
76
Embodied Water, L/kg 190
190

Common Calculations

PREN (Pitting Resistance) 30
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
19
Resilience: Unit (Modulus of Resilience), kJ/m3 250
180
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
18
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 3.9
3.2
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0.040 to 0.1
0.35 to 0.75
Cerium (Ce), % 0.025 to 0.070
0
Chromium (Cr), % 25 to 28
15 to 19
Iron (Fe), % 48.8 to 58.2
38.2 to 51.7
Lanthanum (La), % 0.025 to 0.070
0
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 16.5 to 20
33 to 37
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 2.5
Sulfur (S), % 0 to 0.030
0 to 0.040