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ACI-ASTM CA40 Steel vs. EN 1.4807 Stainless Steel

Both ACI-ASTM CA40 steel and EN 1.4807 stainless steel are iron alloys. They have 57% of their average alloy composition in common.

For each property being compared, the top bar is ACI-ASTM CA40 steel and the bottom bar is EN 1.4807 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 10
4.5
Fatigue Strength, MPa 460
120
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
75
Tensile Strength: Ultimate (UTS), MPa 910
480
Tensile Strength: Yield (Proof), MPa 860
250

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Corrosion, °C 390
600
Maximum Temperature: Mechanical, °C 750
1000
Melting Completion (Liquidus), °C 1440
1390
Melting Onset (Solidus), °C 1500
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
12
Thermal Expansion, µm/m-K 10
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
39
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.0
6.8
Embodied Energy, MJ/kg 28
97
Embodied Water, L/kg 100
190

Common Calculations

PREN (Pitting Resistance) 14
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
18
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
160
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 33
17
Strength to Weight: Bending, points 27
17
Thermal Diffusivity, mm2/s 6.7
3.2
Thermal Shock Resistance, points 33
12

Alloy Composition

Carbon (C), % 0.2 to 0.4
0.3 to 0.5
Chromium (Cr), % 11.5 to 14
17 to 20
Iron (Fe), % 81.5 to 88.3
36.6 to 46.7
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 0 to 1.0
34 to 36
Niobium (Nb), % 0
1.0 to 1.8
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
1.0 to 2.5
Sulfur (S), % 0 to 0.040
0 to 0.030