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EN 1.4369 Stainless Steel vs. ACI-ASTM CN7MS Steel

Both EN 1.4369 stainless steel and ACI-ASTM CN7MS steel are iron alloys. They have 77% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4369 stainless steel and the bottom bar is ACI-ASTM CN7MS steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
39
Fatigue Strength, MPa 330
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 850
540
Tensile Strength: Yield (Proof), MPa 390
230

Thermal Properties

Latent Heat of Fusion, J/g 290
340
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 940
1040
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1360
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 14
28
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.0
5.1
Embodied Energy, MJ/kg 43
71
Embodied Water, L/kg 150
180

Common Calculations

PREN (Pitting Resistance) 23
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
170
Resilience: Unit (Modulus of Resilience), kJ/m3 380
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31
19
Strength to Weight: Bending, points 26
19
Thermal Diffusivity, mm2/s 4.0
3.2
Thermal Shock Resistance, points 18
13

Alloy Composition

Carbon (C), % 0.070 to 0.15
0 to 0.070
Chromium (Cr), % 17.5 to 19.5
18 to 20
Copper (Cu), % 0
1.5 to 2.0
Iron (Fe), % 63 to 70.2
45.4 to 53.5
Manganese (Mn), % 5.0 to 7.5
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 6.5 to 8.5
22 to 25
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.5 to 1.0
2.5 to 3.5
Sulfur (S), % 0 to 0.015
0 to 0.030