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ACI-ASTM CA6NM Steel vs. EN 1.4878 Stainless Steel

Both ACI-ASTM CA6NM steel and EN 1.4878 stainless steel are iron alloys. They have 87% 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 CA6NM steel and the bottom bar is EN 1.4878 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
45
Fatigue Strength, MPa 380
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 850
610
Tensile Strength: Yield (Proof), MPa 620
210

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
490
Maximum Temperature: Mechanical, °C 770
850
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 10
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.5
3.2
Embodied Energy, MJ/kg 34
46
Embodied Water, L/kg 110
140

Common Calculations

PREN (Pitting Resistance) 15
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
210
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
22
Strength to Weight: Bending, points 26
20
Thermal Diffusivity, mm2/s 6.7
4.0
Thermal Shock Resistance, points 31
13

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.1
Chromium (Cr), % 11.5 to 14
17 to 19
Iron (Fe), % 78.4 to 84.6
65 to 74
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 3.5 to 4.5
9.0 to 12
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0 to 0.8