MakeItFrom.com
Menu (ESC)

S20431 Stainless Steel vs. ACI-ASTM CA40F Steel

Both S20431 stainless steel and ACI-ASTM CA40F steel are iron alloys. They have 85% 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 S20431 stainless steel and the bottom bar is ACI-ASTM CA40F steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
230
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 46
13
Fatigue Strength, MPa 320
320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 710
770
Tensile Strength: Yield (Proof), MPa 350
550

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 890
750
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1360
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
27
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
7.5
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.5
2.0
Embodied Energy, MJ/kg 36
28
Embodied Water, L/kg 140
100

Common Calculations

PREN (Pitting Resistance) 20
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
94
Resilience: Unit (Modulus of Resilience), kJ/m3 310
790
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
28
Strength to Weight: Bending, points 23
24
Thermal Diffusivity, mm2/s 4.0
7.2
Thermal Shock Resistance, points 15
28

Alloy Composition

Carbon (C), % 0 to 0.12
0.2 to 0.4
Chromium (Cr), % 17 to 18
11.5 to 14
Copper (Cu), % 1.5 to 3.5
0
Iron (Fe), % 66.1 to 74.4
81.6 to 88.3
Manganese (Mn), % 5.0 to 7.0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 2.0 to 4.0
0 to 1.0
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0.2 to 0.4