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EN 1.4646 Stainless Steel vs. ACI-ASTM CN7M Steel

Both EN 1.4646 stainless steel and ACI-ASTM CN7M steel are iron alloys. They have 69% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4646 stainless steel and the bottom bar is ACI-ASTM CN7M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
44
Fatigue Strength, MPa 340
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 750
480
Tensile Strength: Yield (Proof), MPa 430
200

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 410
430
Maximum Temperature: Mechanical, °C 910
1100
Melting Completion (Liquidus), °C 1390
1410
Melting Onset (Solidus), °C 1340
1450
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
15

Otherwise Unclassified Properties

Base Metal Price, % relative 13
32
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 2.8
5.6
Embodied Energy, MJ/kg 41
78
Embodied Water, L/kg 160
210

Common Calculations

PREN (Pitting Resistance) 23
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
170
Resilience: Unit (Modulus of Resilience), kJ/m3 460
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
17
Strength to Weight: Bending, points 24
17
Thermal Shock Resistance, points 16
12

Alloy Composition

Carbon (C), % 0.020 to 0.1
0 to 0.070
Chromium (Cr), % 17 to 19
19 to 22
Copper (Cu), % 1.5 to 3.0
3.0 to 4.0
Iron (Fe), % 59 to 67.3
37.4 to 48.5
Manganese (Mn), % 10.5 to 12.5
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
2.0 to 3.0
Nickel (Ni), % 3.5 to 4.5
27.5 to 30.5
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.050
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.040