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ACI-ASTM CA6NM Steel vs. EN 1.4589 Stainless Steel

Both ACI-ASTM CA6NM steel and EN 1.4589 stainless steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA6NM steel and the bottom bar is EN 1.4589 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
17
Fatigue Strength, MPa 380
260
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 850
650
Tensile Strength: Yield (Proof), MPa 620
440

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 390
470
Maximum Temperature: Mechanical, °C 770
810
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
25
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.5
2.4
Embodied Energy, MJ/kg 34
34
Embodied Water, L/kg 110
110

Common Calculations

PREN (Pitting Resistance) 15
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
96
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
490
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
23
Strength to Weight: Bending, points 26
22
Thermal Diffusivity, mm2/s 6.7
6.7
Thermal Shock Resistance, points 31
23

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.080
Chromium (Cr), % 11.5 to 14
13.5 to 15.5
Iron (Fe), % 78.4 to 84.6
78.2 to 85
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.4 to 1.0
0.2 to 1.2
Nickel (Ni), % 3.5 to 4.5
1.0 to 2.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.3 to 0.5