MakeItFrom.com
Menu (ESC)

S20431 Stainless Steel vs. ACI-ASTM CK3MCuN Steel

Both S20431 stainless steel and ACI-ASTM CK3MCuN steel are iron alloys. They have 75% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S20431 stainless steel and the bottom bar is ACI-ASTM CK3MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 46
39
Fatigue Strength, MPa 320
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 710
620
Tensile Strength: Yield (Proof), MPa 350
290

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 890
1090
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1360
1350
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.5
5.6
Embodied Energy, MJ/kg 36
76
Embodied Water, L/kg 140
190

Common Calculations

PREN (Pitting Resistance) 20
45
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
200
Resilience: Unit (Modulus of Resilience), kJ/m3 310
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
21
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 4.0
3.2
Thermal Shock Resistance, points 15
14

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.025
Chromium (Cr), % 17 to 18
19.5 to 20.5
Copper (Cu), % 1.5 to 3.5
0.5 to 1.0
Iron (Fe), % 66.1 to 74.4
49.5 to 56.3
Manganese (Mn), % 5.0 to 7.0
0 to 1.2
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 2.0 to 4.0
17.5 to 19.5
Nitrogen (N), % 0.1 to 0.25
0.18 to 0.24
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010