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ACI-ASTM CA6NM Steel vs. S44536 Stainless Steel

Both ACI-ASTM CA6NM steel and S44536 stainless steel are iron alloys. They have a moderately high 90% 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 S44536 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
22
Fatigue Strength, MPa 380
190
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 850
460
Tensile Strength: Yield (Proof), MPa 620
280

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
560
Maximum Temperature: Mechanical, °C 770
990
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
21
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 10
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.5
2.8
Embodied Energy, MJ/kg 34
41
Embodied Water, L/kg 110
140

Common Calculations

PREN (Pitting Resistance) 15
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
89
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
17
Strength to Weight: Bending, points 26
17
Thermal Diffusivity, mm2/s 6.7
5.6
Thermal Shock Resistance, points 31
16

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.015
Chromium (Cr), % 11.5 to 14
20 to 23
Iron (Fe), % 78.4 to 84.6
72.8 to 80
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 3.5 to 4.5
0 to 0.5
Niobium (Nb), % 0
0.050 to 0.8
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0 to 0.8