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ACI-ASTM CA6NM Steel vs. S21603 Stainless Steel

Both ACI-ASTM CA6NM steel and S21603 stainless steel are iron alloys. They have 81% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA6NM steel and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
45
Fatigue Strength, MPa 380
360
Poisson's Ratio 0.28
0.28
Reduction in Area, % 40
57
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 850
690
Tensile Strength: Yield (Proof), MPa 620
390

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 770
990
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 10
17

Otherwise Unclassified Properties

Base Metal Price, % relative 10
17
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.5
3.6
Embodied Energy, MJ/kg 34
50
Embodied Water, L/kg 110
160

Common Calculations

PREN (Pitting Resistance) 15
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
270
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
380
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
25
Strength to Weight: Bending, points 26
22
Thermal Shock Resistance, points 31
15

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 11.5 to 14
17.5 to 22
Iron (Fe), % 78.4 to 84.6
57.6 to 67.8
Manganese (Mn), % 0 to 1.0
7.5 to 9.0
Molybdenum (Mo), % 0.4 to 1.0
2.0 to 3.0
Nickel (Ni), % 3.5 to 4.5
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030