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EN 1.4859 Stainless Steel vs. ACI-ASTM CN3MN Steel

Both EN 1.4859 stainless steel and ACI-ASTM CN3MN steel are iron alloys. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4859 stainless steel and the bottom bar is ACI-ASTM CN3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
180
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 23
39
Fatigue Strength, MPa 140
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 490
620
Tensile Strength: Yield (Proof), MPa 210
300

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Maximum Temperature: Corrosion, °C 560
430
Maximum Temperature: Mechanical, °C 1050
1100
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1360
1410
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 13
13
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 36
33
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 6.2
6.2
Embodied Energy, MJ/kg 88
84
Embodied Water, L/kg 190
200

Common Calculations

PREN (Pitting Resistance) 21
46
Resilience: Ultimate (Unit Rupture Work), MJ/m3 91
200
Resilience: Unit (Modulus of Resilience), kJ/m3 110
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
21
Strength to Weight: Bending, points 17
20
Thermal Diffusivity, mm2/s 3.4
3.4
Thermal Shock Resistance, points 11
14

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.030
Chromium (Cr), % 19 to 21
20 to 22
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 40.3 to 49
41.4 to 50.3
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
6.0 to 7.0
Nickel (Ni), % 31 to 33
23.5 to 25.5
Niobium (Nb), % 0.5 to 1.5
0
Nitrogen (N), % 0
0.18 to 0.26
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0.5 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010