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ACI-ASTM CA15M Steel vs. S20910 Stainless Steel

Both ACI-ASTM CA15M steel and S20910 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 31 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 ACI-ASTM CA15M steel and the bottom bar is S20910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
230 to 290
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 20
14 to 39
Fatigue Strength, MPa 330
310 to 460
Poisson's Ratio 0.28
0.28
Reduction in Area, % 34
56 to 62
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 690
780 to 940
Tensile Strength: Yield (Proof), MPa 510
430 to 810

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 390
460
Maximum Temperature: Mechanical, °C 760
1080
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
13
Thermal Expansion, µm/m-K 10
16

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
22
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.1
4.8
Embodied Energy, MJ/kg 29
68
Embodied Water, L/kg 100
180

Common Calculations

PREN (Pitting Resistance) 15
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 670
460 to 1640
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
28 to 33
Strength to Weight: Bending, points 22
24 to 27
Thermal Diffusivity, mm2/s 7.2
3.6
Thermal Shock Resistance, points 25
17 to 21

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.060
Chromium (Cr), % 11.5 to 14
20.5 to 23.5
Iron (Fe), % 82.1 to 88.4
52.1 to 62.1
Manganese (Mn), % 0 to 1.0
4.0 to 6.0
Molybdenum (Mo), % 0.15 to 1.0
1.5 to 3.0
Nickel (Ni), % 0 to 1.0
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.65
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0
0.1 to 0.3