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ACI-ASTM CN7M Steel vs. EN 1.4434 Stainless Steel

Both ACI-ASTM CN7M steel and EN 1.4434 stainless steel are iron alloys. They have 77% 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 ACI-ASTM CN7M steel and the bottom bar is EN 1.4434 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 44
41
Fatigue Strength, MPa 190
270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 480
660
Tensile Strength: Yield (Proof), MPa 200
310

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 430
420
Maximum Temperature: Mechanical, °C 1100
980
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1450
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 15
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 32
21
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 5.6
4.2
Embodied Energy, MJ/kg 78
57
Embodied Water, L/kg 210
160

Common Calculations

PREN (Pitting Resistance) 29
32
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
220
Resilience: Unit (Modulus of Resilience), kJ/m3 110
240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
23
Strength to Weight: Bending, points 17
21
Thermal Diffusivity, mm2/s 5.6
4.0
Thermal Shock Resistance, points 12
15

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 19 to 22
16.5 to 19.5
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 37.4 to 48.5
59.2 to 69.9
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 2.0 to 3.0
3.0 to 4.0
Nickel (Ni), % 27.5 to 30.5
10.5 to 14
Nitrogen (N), % 0
0.1 to 0.2
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 0.015