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ACI-ASTM CG12 Steel vs. S30441 Stainless Steel

Both ACI-ASTM CG12 steel and S30441 stainless steel are iron alloys. They have a moderately high 95% 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 CG12 steel and the bottom bar is S30441 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
45
Fatigue Strength, MPa 190
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 550
580
Tensile Strength: Yield (Proof), MPa 220
230

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 430
460
Maximum Temperature: Mechanical, °C 1040
940
Melting Completion (Liquidus), °C 1410
1420
Melting Onset (Solidus), °C 1370
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 18
18
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.3
3.4
Embodied Energy, MJ/kg 48
50
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 22
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
210
Resilience: Unit (Modulus of Resilience), kJ/m3 120
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
21
Strength to Weight: Bending, points 19
20
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 12
13

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.080
Chromium (Cr), % 20 to 23
17.5 to 19.5
Copper (Cu), % 0
1.5 to 2.5
Iron (Fe), % 60.3 to 70
62 to 71.7
Manganese (Mn), % 0 to 1.5
0 to 2.0
Nickel (Ni), % 10 to 13
8.0 to 10.5
Niobium (Nb), % 0
0.1 to 0.5
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 2.0
1.0 to 2.0
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
0.2 to 0.8