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ACI-ASTM CA6NM Steel vs. S31277 Stainless Steel

Both ACI-ASTM CA6NM steel and S31277 stainless steel are iron alloys. They have 59% of their average alloy composition in common. There are 27 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 S31277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 17
45
Fatigue Strength, MPa 380
380
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 850
860
Tensile Strength: Yield (Proof), MPa 620
410

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
430
Maximum Temperature: Mechanical, °C 770
1100
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 10
16

Otherwise Unclassified Properties

Base Metal Price, % relative 10
36
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 2.5
6.7
Embodied Energy, MJ/kg 34
90
Embodied Water, L/kg 110
220

Common Calculations

PREN (Pitting Resistance) 15
51
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
320
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
29
Strength to Weight: Bending, points 26
25
Thermal Shock Resistance, points 31
19

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.020
Chromium (Cr), % 11.5 to 14
20.5 to 23
Copper (Cu), % 0
0.5 to 1.5
Iron (Fe), % 78.4 to 84.6
35.5 to 46.2
Manganese (Mn), % 0 to 1.0
0 to 3.0
Molybdenum (Mo), % 0.4 to 1.0
6.5 to 8.0
Nickel (Ni), % 3.5 to 4.5
26 to 28
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010