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ACI-ASTM CN7M Steel vs. S15700 Stainless Steel

Both ACI-ASTM CN7M steel and S15700 stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN7M steel and the bottom bar is S15700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
200 to 460
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 44
1.1 to 29
Fatigue Strength, MPa 190
370 to 770
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 480
1180 to 1890
Tensile Strength: Yield (Proof), MPa 200
500 to 1770

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 430
400
Maximum Temperature: Mechanical, °C 1100
870
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1450
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 21
16
Thermal Expansion, µm/m-K 15
11

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 32
15
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.6
3.4
Embodied Energy, MJ/kg 78
47
Embodied Water, L/kg 210
140

Common Calculations

PREN (Pitting Resistance) 29
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
17 to 270
Resilience: Unit (Modulus of Resilience), kJ/m3 110
640 to 4660
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
42 to 67
Strength to Weight: Bending, points 17
32 to 43
Thermal Diffusivity, mm2/s 5.6
4.2
Thermal Shock Resistance, points 12
39 to 63

Alloy Composition

Aluminum (Al), % 0
0.75 to 1.5
Carbon (C), % 0 to 0.070
0 to 0.090
Chromium (Cr), % 19 to 22
14 to 16
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 37.4 to 48.5
69.6 to 76.8
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 2.0 to 3.0
2.0 to 3.0
Nickel (Ni), % 27.5 to 30.5
6.5 to 7.7
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030