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S30815 Stainless Steel vs. ACI-ASTM CG8M Steel

Both S30815 stainless steel and ACI-ASTM CG8M steel are iron alloys. They have a very high 96% 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 S30815 stainless steel and the bottom bar is ACI-ASTM CG8M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
45
Fatigue Strength, MPa 320
280
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 680
550
Tensile Strength: Yield (Proof), MPa 350
300

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 430
420
Maximum Temperature: Mechanical, °C 1020
1020
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1360
1400
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 17
20
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.3
4.1
Embodied Energy, MJ/kg 47
56
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 24
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 260
210
Resilience: Unit (Modulus of Resilience), kJ/m3 310
220
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
19
Strength to Weight: Bending, points 22
19
Thermal Diffusivity, mm2/s 4.0
4.3
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0.050 to 0.1
0 to 0.080
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 20 to 22
18 to 21
Iron (Fe), % 62.8 to 68.4
58.8 to 70
Manganese (Mn), % 0 to 0.8
0 to 1.5
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 10 to 12
9.0 to 13
Nitrogen (N), % 0.14 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 1.4 to 2.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040