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ACI-ASTM CG3M Steel vs. S44800 Stainless Steel

Both ACI-ASTM CG3M steel and S44800 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CG3M steel and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
190
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 28
23
Fatigue Strength, MPa 200
300
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
82
Tensile Strength: Ultimate (UTS), MPa 580
590
Tensile Strength: Yield (Proof), MPa 270
450

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
460
Maximum Temperature: Mechanical, °C 1020
1100
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 20
19
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.1
3.8
Embodied Energy, MJ/kg 56
52
Embodied Water, L/kg 160
190

Common Calculations

PREN (Pitting Resistance) 31
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
120
Resilience: Unit (Modulus of Resilience), kJ/m3 190
480
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
21
Strength to Weight: Bending, points 20
20
Thermal Diffusivity, mm2/s 4.1
4.6
Thermal Shock Resistance, points 13
19

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.010
Chromium (Cr), % 18 to 21
28 to 30
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 58.9 to 70
62.6 to 66.5
Manganese (Mn), % 0 to 1.5
0 to 0.3
Molybdenum (Mo), % 3.0 to 4.0
3.5 to 4.2
Nickel (Ni), % 9.0 to 13
2.0 to 2.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.5
0 to 0.2
Sulfur (S), % 0 to 0.040
0 to 0.020