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EN 1.4724 Stainless Steel vs. ACI-ASTM CA15M Steel

Both EN 1.4724 stainless steel and ACI-ASTM CA15M steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 32 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 1.4724 stainless steel and the bottom bar is ACI-ASTM CA15M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
210
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
20
Fatigue Strength, MPa 170
330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
76
Tensile Strength: Ultimate (UTS), MPa 550
690
Tensile Strength: Yield (Proof), MPa 280
510

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 390
390
Maximum Temperature: Mechanical, °C 850
760
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 21
27
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
7.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.0
2.1
Embodied Energy, MJ/kg 28
29
Embodied Water, L/kg 110
100

Common Calculations

PREN (Pitting Resistance) 13
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 73
130
Resilience: Unit (Modulus of Resilience), kJ/m3 210
670
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
25
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 5.6
7.2
Thermal Shock Resistance, points 19
25

Alloy Composition

Aluminum (Al), % 0.7 to 1.2
0
Carbon (C), % 0 to 0.12
0 to 0.15
Chromium (Cr), % 12 to 14
11.5 to 14
Iron (Fe), % 82.2 to 86.6
82.1 to 88.4
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
0.15 to 1.0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0.7 to 1.4
0 to 0.65
Sulfur (S), % 0 to 0.015
0 to 0.040