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S17700 Stainless Steel vs. ACI-ASTM CK3MCuN Steel

Both S17700 stainless steel and ACI-ASTM CK3MCuN steel are iron alloys. They have 78% 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 S17700 stainless steel and the bottom bar is ACI-ASTM CK3MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 430
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 1.0 to 23
39
Fatigue Strength, MPa 290 to 560
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 1180 to 1650
620
Tensile Strength: Yield (Proof), MPa 430 to 1210
290

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 890
1090
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1350
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 13
29
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.8
5.6
Embodied Energy, MJ/kg 40
76
Embodied Water, L/kg 150
190

Common Calculations

PREN (Pitting Resistance) 17
45
Resilience: Ultimate (Unit Rupture Work), MJ/m3 15 to 210
200
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 3750
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 42 to 59
21
Strength to Weight: Bending, points 32 to 40
20
Thermal Diffusivity, mm2/s 4.1
3.2
Thermal Shock Resistance, points 39 to 54
14

Alloy Composition

Aluminum (Al), % 0.75 to 1.5
0
Carbon (C), % 0 to 0.090
0 to 0.025
Chromium (Cr), % 16 to 18
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 70.5 to 76.8
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), % 6.5 to 7.8
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