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S31727 Stainless Steel vs. ACI-ASTM CG12 Steel

Both S31727 stainless steel and ACI-ASTM CG12 steel are iron alloys. They have 88% 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 CG12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
40
Fatigue Strength, MPa 240
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
78
Tensile Strength: Ultimate (UTS), MPa 630
550
Tensile Strength: Yield (Proof), MPa 270
220

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
430
Maximum Temperature: Mechanical, °C 1010
1040
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 24
18
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 4.7
3.3
Embodied Energy, MJ/kg 64
48
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 35
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
180
Resilience: Unit (Modulus of Resilience), kJ/m3 190
120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
20
Strength to Weight: Bending, points 20
19
Thermal Shock Resistance, points 14
12

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.12
Chromium (Cr), % 17.5 to 19
20 to 23
Copper (Cu), % 2.8 to 4.0
0
Iron (Fe), % 53.7 to 61.3
60.3 to 70
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 3.8 to 4.5
0
Nickel (Ni), % 14.5 to 16.5
10 to 13
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040