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S31727 Stainless Steel vs. ACI-ASTM CN3M Steel

Both S31727 stainless steel and ACI-ASTM CN3M steel are iron alloys. They have 86% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is ACI-ASTM CN3M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
34
Fatigue Strength, MPa 240
150
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
80
Tensile Strength: Ultimate (UTS), MPa 630
500
Tensile Strength: Yield (Proof), MPa 270
190

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 420
430
Maximum Temperature: Mechanical, °C 1010
1100
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 24
31
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 4.7
5.9
Embodied Energy, MJ/kg 64
80
Embodied Water, L/kg 180
200

Common Calculations

PREN (Pitting Resistance) 35
38
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
130
Resilience: Unit (Modulus of Resilience), kJ/m3 190
89
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
17
Strength to Weight: Bending, points 20
17
Thermal Shock Resistance, points 14
11

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 17.5 to 19
20 to 22
Copper (Cu), % 2.8 to 4.0
0
Iron (Fe), % 53.7 to 61.3
42.4 to 52.5
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 3.8 to 4.5
4.5 to 5.5
Nickel (Ni), % 14.5 to 16.5
23 to 27
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030