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ACI-ASTM CA40 Steel vs. EN 1.4865 Stainless Steel

Both ACI-ASTM CA40 steel and EN 1.4865 stainless steel are iron alloys. They have 55% 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 1.4865 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 10
6.8
Fatigue Strength, MPa 460
120
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 910
470
Tensile Strength: Yield (Proof), MPa 860
250

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 750
1020
Melting Completion (Liquidus), °C 1440
1380
Melting Onset (Solidus), °C 1500
1330
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
33
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.0
5.8
Embodied Energy, MJ/kg 28
81
Embodied Water, L/kg 100
200

Common Calculations

PREN (Pitting Resistance) 14
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
27
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 33
16
Strength to Weight: Bending, points 27
17
Thermal Diffusivity, mm2/s 6.7
3.1
Thermal Shock Resistance, points 33
11

Alloy Composition

Carbon (C), % 0.2 to 0.4
0.3 to 0.5
Chromium (Cr), % 11.5 to 14
18 to 21
Iron (Fe), % 81.5 to 88.3
34.4 to 44.7
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
36 to 39
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