EN 1.4859 Stainless Steel vs. ACI-ASTM CN7M Steel
Both EN 1.4859 stainless steel and ACI-ASTM CN7M steel are iron alloys. They have a moderately high 94% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.4859 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 | 200 | |
200 |
Elongation at Break, % | 23 | |
44 |
Fatigue Strength, MPa | 140 | |
190 |
Poisson's Ratio | 0.28 | |
0.28 |
Shear Modulus, GPa | 76 | |
77 |
Tensile Strength: Ultimate (UTS), MPa | 490 | |
480 |
Tensile Strength: Yield (Proof), MPa | 210 | |
200 |
Thermal Properties
Latent Heat of Fusion, J/g | 310 | |
310 |
Maximum Temperature: Corrosion, °C | 560 | |
430 |
Maximum Temperature: Mechanical, °C | 1050 | |
1100 |
Melting Completion (Liquidus), °C | 1410 | |
1410 |
Melting Onset (Solidus), °C | 1360 | |
1450 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 13 | |
21 |
Thermal Expansion, µm/m-K | 16 | |
15 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 1.7 | |
1.6 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 1.9 | |
1.8 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 36 | |
32 |
Density, g/cm3 | 8.0 | |
8.1 |
Embodied Carbon, kg CO2/kg material | 6.2 | |
5.6 |
Embodied Energy, MJ/kg | 88 | |
78 |
Embodied Water, L/kg | 190 | |
210 |
Common Calculations
PREN (Pitting Resistance) | 21 | |
29 |
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 91 | |
170 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 | |
110 |
Stiffness to Weight: Axial, points | 14 | |
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 | 3.4 | |
5.6 |
Thermal Shock Resistance, points | 11 | |
12 |
Alloy Composition
Carbon (C), % | 0.050 to 0.15 | |
0 to 0.070 |
Chromium (Cr), % | 19 to 21 | |
19 to 22 |
Copper (Cu), % | 0 | |
3.0 to 4.0 |
Iron (Fe), % | 40.3 to 49 | |
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), % | 31 to 33 | |
27.5 to 30.5 |
Niobium (Nb), % | 0.5 to 1.5 | |
0 |
Phosphorus (P), % | 0 to 0.040 | |
0 to 0.040 |
Silicon (Si), % | 0.5 to 1.5 | |
0 to 1.5 |
Sulfur (S), % | 0 to 0.030 | |
0 to 0.040 |