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EN 1.3549 Stainless Steel vs. ACI-ASTM CN7M Steel

Both EN 1.3549 stainless steel and ACI-ASTM CN7M steel are iron alloys. They have 63% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.3549 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
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 730
480

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 400
430
Maximum Temperature: Mechanical, °C 910
1100
Melting Completion (Liquidus), °C 1430
1410
Melting Onset (Solidus), °C 1390
1450
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 21
21
Thermal Expansion, µm/m-K 10
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 10
32
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 2.6
5.6
Embodied Energy, MJ/kg 37
78
Embodied Water, L/kg 130
210

Common Calculations

PREN (Pitting Resistance) 22
29
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 Diffusivity, mm2/s 5.6
5.6
Thermal Shock Resistance, points 26
12

Alloy Composition

Carbon (C), % 0.85 to 1.0
0 to 0.070
Chromium (Cr), % 17 to 19
19 to 22
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 77.5 to 82
37.4 to 48.5
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 0.9 to 1.3
2.0 to 3.0
Nickel (Ni), % 0
27.5 to 30.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040
Vanadium (V), % 0.070 to 0.12
0