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ACI-ASTM CA15 Steel vs. EN 1.4125 Stainless Steel

Both ACI-ASTM CA15 steel and EN 1.4125 stainless steel are iron alloys. They have a moderately high 94% 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 ACI-ASTM CA15 steel and the bottom bar is EN 1.4125 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
250
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
19
Fatigue Strength, MPa 370
300
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 700
800
Tensile Strength: Yield (Proof), MPa 570
470

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 390
390
Maximum Temperature: Mechanical, °C 750
870
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1500
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
9.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
2.3
Embodied Energy, MJ/kg 28
32
Embodied Water, L/kg 100
120

Common Calculations

PREN (Pitting Resistance) 14
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
130
Resilience: Unit (Modulus of Resilience), kJ/m3 820
570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
29
Strength to Weight: Bending, points 23
25
Thermal Diffusivity, mm2/s 6.7
4.1
Thermal Shock Resistance, points 26
29

Alloy Composition

Carbon (C), % 0 to 0.15
1.0 to 1.2
Chromium (Cr), % 11.5 to 14
16 to 18
Iron (Fe), % 81.8 to 88.5
78 to 82.7
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0.4 to 0.8
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.015