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AISI 431 Stainless Steel vs. ASTM Grade HE Steel

Both AISI 431 stainless steel and ASTM grade HE steel are iron alloys. They have 79% 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 AISI 431 stainless steel and the bottom bar is ASTM grade HE steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 15 to 17
10
Fatigue Strength, MPa 430 to 610
160
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
670
Tensile Strength: Yield (Proof), MPa 710 to 1040
310

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 400
450
Maximum Temperature: Mechanical, °C 850
1100
Melting Completion (Liquidus), °C 1510
1400
Melting Onset (Solidus), °C 1450
1360
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 26
14
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
19
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.2
3.5
Embodied Energy, MJ/kg 31
50
Embodied Water, L/kg 120
190

Common Calculations

PREN (Pitting Resistance) 16
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
56
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 2770
240
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 50
24
Strength to Weight: Bending, points 27 to 36
22
Thermal Diffusivity, mm2/s 7.0
3.6
Thermal Shock Resistance, points 28 to 43
14

Alloy Composition

Carbon (C), % 0 to 0.2
0.2 to 0.5
Chromium (Cr), % 15 to 17
26 to 30
Iron (Fe), % 78.2 to 83.8
53.9 to 65.8
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 1.3 to 2.5
8.0 to 11
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