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ACI-ASTM CH20 Steel vs. S32906 Stainless Steel

Both ACI-ASTM CH20 steel and S32906 stainless steel are iron alloys. They have a moderately high 92% 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 ACI-ASTM CH20 steel and the bottom bar is S32906 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
270
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 38
28
Fatigue Strength, MPa 290
460
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 78
81
Tensile Strength: Ultimate (UTS), MPa 610
850
Tensile Strength: Yield (Proof), MPa 350
620

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 440
460
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1410
1430
Melting Onset (Solidus), °C 1430
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
13
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 20
20
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.7
3.7
Embodied Energy, MJ/kg 53
52
Embodied Water, L/kg 180
190

Common Calculations

PREN (Pitting Resistance) 25
41
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
220
Resilience: Unit (Modulus of Resilience), kJ/m3 300
950
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
30
Strength to Weight: Bending, points 21
26
Thermal Diffusivity, mm2/s 3.7
3.6
Thermal Shock Resistance, points 15
23

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.030
Chromium (Cr), % 22 to 26
28 to 30
Copper (Cu), % 0
0 to 0.8
Iron (Fe), % 54.7 to 66
56.6 to 63.6
Manganese (Mn), % 0 to 1.5
0.8 to 1.5
Molybdenum (Mo), % 0 to 0.5
1.5 to 2.6
Nickel (Ni), % 12 to 15
5.8 to 7.5
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.030