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S32750 Stainless Steel vs. ACI-ASTM CG8M Steel

Both S32750 stainless steel and ACI-ASTM CG8M steel are iron alloys. They have a moderately high 93% 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 S32750 stainless steel and the bottom bar is ACI-ASTM CG8M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
180
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 17
45
Fatigue Strength, MPa 360
280
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
79
Tensile Strength: Ultimate (UTS), MPa 860
550
Tensile Strength: Yield (Proof), MPa 590
300

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
1020
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 21
20
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.1
4.1
Embodied Energy, MJ/kg 56
56
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 43
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
210
Resilience: Unit (Modulus of Resilience), kJ/m3 860
220
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31
19
Strength to Weight: Bending, points 26
19
Thermal Diffusivity, mm2/s 4.0
4.3
Thermal Shock Resistance, points 25
12

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 24 to 26
18 to 21
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 58.1 to 66.8
58.8 to 70
Manganese (Mn), % 0 to 1.2
0 to 1.5
Molybdenum (Mo), % 3.0 to 5.0
3.0 to 4.0
Nickel (Ni), % 6.0 to 8.0
9.0 to 13
Nitrogen (N), % 0.24 to 0.32
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.5
Sulfur (S), % 0 to 0.020
0 to 0.040