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AISI 316 Stainless Steel vs. ACI-ASTM CN7M Steel

Both AISI 316 stainless steel and ACI-ASTM CN7M steel are iron alloys. They have 76% of their average alloy composition in common. There are 32 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 AISI 316 stainless steel and the bottom bar is ACI-ASTM CN7M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 360
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 8.0 to 55
44
Fatigue Strength, MPa 210 to 430
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 520 to 1180
480
Tensile Strength: Yield (Proof), MPa 230 to 850
200

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 410
430
Maximum Temperature: Mechanical, °C 590
1100
Melting Completion (Liquidus), °C 1400
1410
Melting Onset (Solidus), °C 1380
1450
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
21
Thermal Expansion, µm/m-K 16
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 19
32
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 3.9
5.6
Embodied Energy, MJ/kg 53
78
Embodied Water, L/kg 150
210

Common Calculations

PREN (Pitting Resistance) 26
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 85 to 260
170
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 1820
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18 to 41
17
Strength to Weight: Bending, points 18 to 31
17
Thermal Diffusivity, mm2/s 4.1
5.6
Thermal Shock Resistance, points 11 to 26
12

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.070
Chromium (Cr), % 16 to 18
19 to 22
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 62 to 72
37.4 to 48.5
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 2.0 to 3.0
2.0 to 3.0
Nickel (Ni), % 10 to 14
27.5 to 30.5
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040