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ACI-ASTM CG8M Steel vs. S28200 Stainless Steel

Both ACI-ASTM CG8M steel and S28200 stainless steel are iron alloys. They have 81% 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 ACI-ASTM CG8M steel and the bottom bar is S28200 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
260
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
45
Fatigue Strength, MPa 280
430
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 550
870
Tensile Strength: Yield (Proof), MPa 300
460

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 1020
900
Melting Completion (Liquidus), °C 1450
1380
Melting Onset (Solidus), °C 1400
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 16
18

Otherwise Unclassified Properties

Base Metal Price, % relative 20
12
Density, g/cm3 7.9
7.6
Embodied Carbon, kg CO2/kg material 4.1
2.8
Embodied Energy, MJ/kg 56
41
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 31
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
330
Resilience: Unit (Modulus of Resilience), kJ/m3 220
540
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 19
32
Strength to Weight: Bending, points 19
27
Thermal Shock Resistance, points 12
17

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.15
Chromium (Cr), % 18 to 21
17 to 19
Copper (Cu), % 0
0.75 to 1.3
Iron (Fe), % 58.8 to 70
57.7 to 64.1
Manganese (Mn), % 0 to 1.5
17 to 19
Molybdenum (Mo), % 3.0 to 4.0
0.75 to 1.3
Nickel (Ni), % 9.0 to 13
0
Nitrogen (N), % 0
0.4 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030