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AISI 430 Stainless Steel vs. ACI-ASTM CK3MCuN Steel

Both AISI 430 stainless steel and ACI-ASTM CK3MCuN steel are iron alloys. They have 71% of their average alloy composition in common. There are 32 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 AISI 430 stainless steel and the bottom bar is ACI-ASTM CK3MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 24
39
Fatigue Strength, MPa 180
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 500
620
Tensile Strength: Yield (Proof), MPa 260
290

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 870
1090
Melting Completion (Liquidus), °C 1510
1460
Melting Onset (Solidus), °C 1430
1350
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 25
12
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
29
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.1
5.6
Embodied Energy, MJ/kg 30
76
Embodied Water, L/kg 120
190

Common Calculations

PREN (Pitting Resistance) 17
45
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
200
Resilience: Unit (Modulus of Resilience), kJ/m3 170
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
21
Strength to Weight: Bending, points 18
20
Thermal Diffusivity, mm2/s 6.7
3.2
Thermal Shock Resistance, points 18
14

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.025
Chromium (Cr), % 16 to 18
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 79.1 to 84
49.5 to 56.3
Manganese (Mn), % 0 to 1.0
0 to 1.2
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0 to 0.75
17.5 to 19.5
Nitrogen (N), % 0
0.18 to 0.24
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010