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ACI-ASTM CG12 Steel vs. S15500 Stainless Steel

Both ACI-ASTM CG12 steel and S15500 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 32 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 ACI-ASTM CG12 steel and the bottom bar is S15500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
290 to 430
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
6.8 to 16
Fatigue Strength, MPa 190
350 to 650
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
75
Tensile Strength: Ultimate (UTS), MPa 550
890 to 1490
Tensile Strength: Yield (Proof), MPa 220
590 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 430
440
Maximum Temperature: Mechanical, °C 1040
820
Melting Completion (Liquidus), °C 1410
1430
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 18
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.3
2.7
Embodied Energy, MJ/kg 48
39
Embodied Water, L/kg 160
130

Common Calculations

PREN (Pitting Resistance) 22
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
98 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 120
890 to 4460
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
32 to 53
Strength to Weight: Bending, points 19
26 to 37
Thermal Diffusivity, mm2/s 4.0
4.6
Thermal Shock Resistance, points 12
30 to 50

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.070
Chromium (Cr), % 20 to 23
14 to 15.5
Copper (Cu), % 0
2.5 to 4.5
Iron (Fe), % 60.3 to 70
71.9 to 79.9
Manganese (Mn), % 0 to 1.5
0 to 1.0
Nickel (Ni), % 10 to 13
3.5 to 5.5
Niobium (Nb), % 0
0.15 to 0.45
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030