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ACI-ASTM CA6NM Steel vs. S35115 Stainless Steel

Both ACI-ASTM CA6NM steel and S35115 stainless steel are iron alloys. They have 70% 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 ACI-ASTM CA6NM steel and the bottom bar is S35115 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
46
Fatigue Strength, MPa 380
280
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 850
670
Tensile Strength: Yield (Proof), MPa 620
310

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
440
Maximum Temperature: Mechanical, °C 770
1100
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
26
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.5
4.8
Embodied Energy, MJ/kg 34
67
Embodied Water, L/kg 110
190

Common Calculations

PREN (Pitting Resistance) 15
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
250
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
24
Strength to Weight: Bending, points 26
22
Thermal Diffusivity, mm2/s 6.7
3.9
Thermal Shock Resistance, points 31
15

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 11.5 to 14
23 to 25
Iron (Fe), % 78.4 to 84.6
47.6 to 55.8
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.4 to 1.0
1.5 to 2.5
Nickel (Ni), % 3.5 to 4.5
19 to 22
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0.5 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.015