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AISI 308L Stainless Steel vs. ACI-ASTM CA15M Steel

Both AISI 308L stainless steel and ACI-ASTM CA15M steel are iron alloys. They have 81% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is AISI 308L stainless steel and the bottom bar is ACI-ASTM CA15M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
20
Fatigue Strength, MPa 180
330
Poisson's Ratio 0.28
0.28
Reduction in Area, % 46
34
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 580
690
Tensile Strength: Yield (Proof), MPa 230
510

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 430
390
Maximum Temperature: Mechanical, °C 1010
760
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
27
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 16
7.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.2
2.1
Embodied Energy, MJ/kg 45
29
Embodied Water, L/kg 160
100

Common Calculations

PREN (Pitting Resistance) 21
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
130
Resilience: Unit (Modulus of Resilience), kJ/m3 140
670
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
25
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 4.1
7.2
Thermal Shock Resistance, points 13
25

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.15
Chromium (Cr), % 19.5 to 22
11.5 to 14
Iron (Fe), % 63.8 to 70.5
82.1 to 88.4
Manganese (Mn), % 1.0 to 2.5
0 to 1.0
Molybdenum (Mo), % 0
0.15 to 1.0
Nickel (Ni), % 9.0 to 11
0 to 1.0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.25 to 0.6
0 to 0.65
Sulfur (S), % 0 to 0.030
0 to 0.040