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ACI-ASTM CN7M Steel vs. S28200 Stainless Steel

Both ACI-ASTM CN7M steel and S28200 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 28 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 CN7M steel and the bottom bar is S28200 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
260
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 44
45
Fatigue Strength, MPa 190
430
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 480
870
Tensile Strength: Yield (Proof), MPa 200
460

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 430
410
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1410
1380
Melting Onset (Solidus), °C 1450
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 15
18

Otherwise Unclassified Properties

Base Metal Price, % relative 32
12
Density, g/cm3 8.1
7.6
Embodied Carbon, kg CO2/kg material 5.6
2.8
Embodied Energy, MJ/kg 78
41
Embodied Water, L/kg 210
160

Common Calculations

PREN (Pitting Resistance) 29
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
330
Resilience: Unit (Modulus of Resilience), kJ/m3 110
540
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 17
32
Strength to Weight: Bending, points 17
27
Thermal Shock Resistance, points 12
17

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.15
Chromium (Cr), % 19 to 22
17 to 19
Copper (Cu), % 3.0 to 4.0
0.75 to 1.3
Iron (Fe), % 37.4 to 48.5
57.7 to 64.1
Manganese (Mn), % 0 to 1.5
17 to 19
Molybdenum (Mo), % 2.0 to 3.0
0.75 to 1.3
Nickel (Ni), % 27.5 to 30.5
0
Nitrogen (N), % 0
0.4 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030