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EN 1.4581 Stainless Steel vs. ACI-ASTM CF3M Steel

Both EN 1.4581 stainless steel and ACI-ASTM CF3M steel are iron alloys. Their average alloy composition is basically identical. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4581 stainless steel and the bottom bar is ACI-ASTM CF3M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
150
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
55
Fatigue Strength, MPa 150
270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
78
Tensile Strength: Ultimate (UTS), MPa 510
520
Tensile Strength: Yield (Proof), MPa 210
260

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 490
420
Maximum Temperature: Mechanical, °C 990
990
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 16
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 21
19
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.2
3.8
Embodied Energy, MJ/kg 59
53
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 26
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
240
Resilience: Unit (Modulus of Resilience), kJ/m3 110
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
18
Strength to Weight: Bending, points 18
18
Thermal Diffusivity, mm2/s 3.9
4.3
Thermal Shock Resistance, points 12
12

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 18 to 20
17 to 21
Iron (Fe), % 61.4 to 71
59.9 to 72
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 2.0 to 2.5
2.0 to 3.0
Nickel (Ni), % 9.0 to 12
9.0 to 13
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040