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EN 1.4849 Stainless Steel vs. ACI-ASTM CN7M Steel

Both EN 1.4849 stainless steel and ACI-ASTM CN7M steel are iron alloys. They have 88% of their average alloy composition in common. There are 30 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 EN 1.4849 stainless steel and the bottom bar is ACI-ASTM CN7M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 4.5
44
Fatigue Strength, MPa 120
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 480
480
Tensile Strength: Yield (Proof), MPa 250
200

Thermal Properties

Latent Heat of Fusion, J/g 320
310
Maximum Temperature: Corrosion, °C 620
430
Maximum Temperature: Mechanical, °C 1020
1100
Melting Completion (Liquidus), °C 1390
1410
Melting Onset (Solidus), °C 1340
1450
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
21
Thermal Expansion, µm/m-K 15
15

Otherwise Unclassified Properties

Base Metal Price, % relative 42
32
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 7.1
5.6
Embodied Energy, MJ/kg 100
78
Embodied Water, L/kg 200
210

Common Calculations

PREN (Pitting Resistance) 20
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 18
170
Resilience: Unit (Modulus of Resilience), kJ/m3 160
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 17
17
Thermal Diffusivity, mm2/s 3.2
5.6
Thermal Shock Resistance, points 11
12

Alloy Composition

Carbon (C), % 0.3 to 0.5
0 to 0.070
Chromium (Cr), % 18 to 21
19 to 22
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 32.6 to 43.5
37.4 to 48.5
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
2.0 to 3.0
Nickel (Ni), % 36 to 39
27.5 to 30.5
Niobium (Nb), % 1.2 to 1.8
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 1.0 to 2.5
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040