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ACI-ASTM CA6NM Steel vs. S45500 Stainless Steel

Both ACI-ASTM CA6NM steel and S45500 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA6NM steel and the bottom bar is S45500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
280 to 500
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
3.4 to 11
Fatigue Strength, MPa 380
570 to 890
Poisson's Ratio 0.28
0.28
Reduction in Area, % 40
34 to 45
Shear Modulus, GPa 76
75
Tensile Strength: Ultimate (UTS), MPa 850
1370 to 1850
Tensile Strength: Yield (Proof), MPa 620
1240 to 1700

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 390
620
Maximum Temperature: Mechanical, °C 770
760
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 10
11

Otherwise Unclassified Properties

Base Metal Price, % relative 10
17
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.5
3.8
Embodied Energy, MJ/kg 34
57
Embodied Water, L/kg 110
120

Common Calculations

PREN (Pitting Resistance) 15
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
45 to 190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
48 to 65
Strength to Weight: Bending, points 26
35 to 42
Thermal Shock Resistance, points 31
48 to 64

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.050
Chromium (Cr), % 11.5 to 14
11 to 12.5
Copper (Cu), % 0
1.5 to 2.5
Iron (Fe), % 78.4 to 84.6
71.5 to 79.2
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 0.4 to 1.0
0 to 0.5
Nickel (Ni), % 3.5 to 4.5
7.5 to 9.5
Niobium (Nb), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
0.8 to 1.4