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ACI-ASTM CA28MWV Steel vs. AISI 431 Stainless Steel

Both ACI-ASTM CA28MWV steel and AISI 431 stainless steel are iron alloys. They have a moderately high 95% of their average alloy composition in common. There are 32 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 ACI-ASTM CA28MWV steel and the bottom bar is AISI 431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
15 to 17
Fatigue Strength, MPa 470
430 to 610
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 1080
890 to 1380
Tensile Strength: Yield (Proof), MPa 870
710 to 1040

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 380
400
Maximum Temperature: Mechanical, °C 740
850
Melting Completion (Liquidus), °C 1470
1510
Melting Onset (Solidus), °C 1430
1450
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 25
26
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.6
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 5.3
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.0
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 3.1
2.2
Embodied Energy, MJ/kg 44
31
Embodied Water, L/kg 100
120

Common Calculations

PREN (Pitting Resistance) 17
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
140 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 1920
1270 to 2770
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 38
32 to 50
Strength to Weight: Bending, points 30
27 to 36
Thermal Diffusivity, mm2/s 6.6
7.0
Thermal Shock Resistance, points 40
28 to 43

Alloy Composition

Carbon (C), % 0.2 to 0.28
0 to 0.2
Chromium (Cr), % 11 to 12.5
15 to 17
Iron (Fe), % 81.4 to 85.8
78.2 to 83.8
Manganese (Mn), % 0.5 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.3
0
Nickel (Ni), % 0.5 to 1.0
1.3 to 2.5
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0.9 to 1.3
0
Vanadium (V), % 0.2 to 0.3
0