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EN 1.4945 Stainless Steel vs. ACI-ASTM CD3MN Steel

Both EN 1.4945 stainless steel and ACI-ASTM CD3MN steel are iron alloys. They have 85% of their average alloy composition in common. There are 31 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 EN 1.4945 stainless steel and the bottom bar is ACI-ASTM CD3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 19 to 34
29
Fatigue Strength, MPa 230 to 350
340
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 640 to 740
710
Tensile Strength: Yield (Proof), MPa 290 to 550
460

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 520
430
Maximum Temperature: Mechanical, °C 920
1060
Melting Completion (Liquidus), °C 1490
1450
Melting Onset (Solidus), °C 1440
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
16
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 30
18
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.0
3.6
Embodied Energy, MJ/kg 73
50
Embodied Water, L/kg 150
160

Common Calculations

PREN (Pitting Resistance) 23
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
180
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 760
530
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 25
25
Strength to Weight: Bending, points 20 to 22
23
Thermal Diffusivity, mm2/s 3.7
4.3
Thermal Shock Resistance, points 14 to 16
20

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.030
Chromium (Cr), % 15.5 to 17.5
21 to 23.5
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 57.9 to 65.7
62.6 to 71.9
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 15.5 to 17.5
4.5 to 6.5
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0.1 to 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.3 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020
Tungsten (W), % 2.5 to 3.5
0