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S20910 Stainless Steel vs. ACI-ASTM CN3M Steel

Both S20910 stainless steel and ACI-ASTM CN3M steel are iron alloys. They have 85% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S20910 stainless steel and the bottom bar is ACI-ASTM CN3M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14 to 39
34
Fatigue Strength, MPa 310 to 460
150
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
80
Tensile Strength: Ultimate (UTS), MPa 780 to 940
500
Tensile Strength: Yield (Proof), MPa 430 to 810
190

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 460
430
Maximum Temperature: Mechanical, °C 1080
1100
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 13
13
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 22
31
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 4.8
5.9
Embodied Energy, MJ/kg 68
80
Embodied Water, L/kg 180
200

Common Calculations

PREN (Pitting Resistance) 34
38
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
130
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
89
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28 to 33
17
Strength to Weight: Bending, points 24 to 27
17
Thermal Diffusivity, mm2/s 3.6
3.4
Thermal Shock Resistance, points 17 to 21
11

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 20.5 to 23.5
20 to 22
Iron (Fe), % 52.1 to 62.1
42.4 to 52.5
Manganese (Mn), % 4.0 to 6.0
0 to 2.0
Molybdenum (Mo), % 1.5 to 3.0
4.5 to 5.5
Nickel (Ni), % 11.5 to 13.5
23 to 27
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.1 to 0.3
0