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AISI 202 Stainless Steel vs. ACI-ASTM CA40 Steel

Both AISI 202 stainless steel and ACI-ASTM CA40 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 (1, in this case) are not shown.

For each property being compared, the top bar is AISI 202 stainless steel and the bottom bar is ACI-ASTM CA40 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 300
310
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 14 to 45
10
Fatigue Strength, MPa 290 to 330
460
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 700 to 980
910
Tensile Strength: Yield (Proof), MPa 310 to 580
860

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 910
750
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1360
1500
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
7.5
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.8
2.0
Embodied Energy, MJ/kg 40
28
Embodied Water, L/kg 150
100

Common Calculations

PREN (Pitting Resistance) 20
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
89
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 840
1910
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25 to 35
33
Strength to Weight: Bending, points 23 to 29
27
Thermal Diffusivity, mm2/s 4.0
6.7
Thermal Shock Resistance, points 15 to 21
33

Alloy Composition

Carbon (C), % 0 to 0.15
0.2 to 0.4
Chromium (Cr), % 17 to 19
11.5 to 14
Iron (Fe), % 63.5 to 71.5
81.5 to 88.3
Manganese (Mn), % 7.5 to 10
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 4.0 to 6.0
0 to 1.0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.060
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040