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N08031 Stainless Steel vs. ACI-ASTM CH20 Steel

Both N08031 stainless steel and ACI-ASTM CH20 steel are iron alloys. They have 72% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is N08031 stainless steel and the bottom bar is ACI-ASTM CH20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 45
38
Fatigue Strength, MPa 290
290
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 81
78
Tensile Strength: Ultimate (UTS), MPa 730
610
Tensile Strength: Yield (Proof), MPa 310
350

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Maximum Temperature: Corrosion, °C 460
440
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1390
1430
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 12
14
Thermal Expansion, µm/m-K 18
15

Otherwise Unclassified Properties

Base Metal Price, % relative 39
20
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 7.1
3.7
Embodied Energy, MJ/kg 96
53
Embodied Water, L/kg 240
180

Common Calculations

PREN (Pitting Resistance) 52
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
200
Resilience: Unit (Modulus of Resilience), kJ/m3 230
300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
22
Strength to Weight: Bending, points 22
21
Thermal Diffusivity, mm2/s 3.1
3.7
Thermal Shock Resistance, points 14
15

Alloy Composition

Carbon (C), % 0 to 0.015
0 to 0.2
Chromium (Cr), % 26 to 28
22 to 26
Copper (Cu), % 1.0 to 1.4
0
Iron (Fe), % 29 to 36.9
54.7 to 66
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 6.0 to 7.0
0 to 0.5
Nickel (Ni), % 30 to 32
12 to 15
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.3
0 to 2.0
Sulfur (S), % 0 to 0.010
0 to 0.040