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ACI-ASTM CA40 Steel vs. EN 1.4826 Stainless Steel

Both ACI-ASTM CA40 steel and EN 1.4826 stainless steel are iron alloys. They have 80% 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 1.4826 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
150
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 10
9.1
Fatigue Strength, MPa 460
140
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 910
500
Tensile Strength: Yield (Proof), MPa 860
260

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
430
Maximum Temperature: Mechanical, °C 750
950
Melting Completion (Liquidus), °C 1440
1400
Melting Onset (Solidus), °C 1500
1360
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 25
14
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
17
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
3.3
Embodied Energy, MJ/kg 28
47
Embodied Water, L/kg 100
160

Common Calculations

PREN (Pitting Resistance) 14
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
39
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 33
18
Strength to Weight: Bending, points 27
18
Thermal Diffusivity, mm2/s 6.7
3.7
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
21 to 23
Iron (Fe), % 81.5 to 88.3
60.4 to 68.7
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
9.0 to 11
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