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ACI-ASTM CA15M Steel vs. AISI 314 Stainless Steel

Both ACI-ASTM CA15M steel and AISI 314 stainless steel are iron alloys. They have 66% 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 ACI-ASTM CA15M steel and the bottom bar is AISI 314 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 20
45
Fatigue Strength, MPa 330
210
Poisson's Ratio 0.28
0.28
Reduction in Area, % 34
57
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 690
590
Tensile Strength: Yield (Proof), MPa 510
230

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Maximum Temperature: Corrosion, °C 390
440
Maximum Temperature: Mechanical, °C 760
1100
Melting Completion (Liquidus), °C 1450
1380
Melting Onset (Solidus), °C 1410
1340
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 27
15
Thermal Expansion, µm/m-K 10
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
25
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.1
4.3
Embodied Energy, MJ/kg 29
62
Embodied Water, L/kg 100
190

Common Calculations

PREN (Pitting Resistance) 15
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
210
Resilience: Unit (Modulus of Resilience), kJ/m3 670
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
21
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 7.2
3.9
Thermal Shock Resistance, points 25
14

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.25
Chromium (Cr), % 11.5 to 14
23 to 26
Iron (Fe), % 82.1 to 88.4
46.7 to 56.5
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0.15 to 1.0
0
Nickel (Ni), % 0 to 1.0
19 to 22
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 0.65
1.5 to 3.0
Sulfur (S), % 0 to 0.040
0 to 0.030