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ACI-ASTM CA6NM Steel vs. EN 1.4646 Stainless Steel

Both ACI-ASTM CA6NM steel and EN 1.4646 stainless steel are iron alloys. They have 81% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, 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 1.4646 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
220
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
34
Fatigue Strength, MPa 380
340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 850
750
Tensile Strength: Yield (Proof), MPa 620
430

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 770
910
Melting Completion (Liquidus), °C 1450
1390
Melting Onset (Solidus), °C 1400
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 10
17

Otherwise Unclassified Properties

Base Metal Price, % relative 10
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.5
2.8
Embodied Energy, MJ/kg 34
41
Embodied Water, L/kg 110
160

Common Calculations

PREN (Pitting Resistance) 15
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
220
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
460
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
27
Strength to Weight: Bending, points 26
24
Thermal Shock Resistance, points 31
16

Alloy Composition

Carbon (C), % 0 to 0.060
0.020 to 0.1
Chromium (Cr), % 11.5 to 14
17 to 19
Copper (Cu), % 0
1.5 to 3.0
Iron (Fe), % 78.4 to 84.6
59 to 67.3
Manganese (Mn), % 0 to 1.0
10.5 to 12.5
Molybdenum (Mo), % 0.4 to 1.0
0 to 0.5
Nickel (Ni), % 3.5 to 4.5
3.5 to 4.5
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.050
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015