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S32304 Stainless Steel vs. EN 1.7720 Steel

Both S32304 stainless steel and EN 1.7720 steel are iron alloys. They have 72% of their average alloy composition in common. There are 31 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 S32304 stainless steel and the bottom bar is EN 1.7720 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 28
19
Fatigue Strength, MPa 330
230
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 670
590
Tensile Strength: Yield (Proof), MPa 460
340

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1050
410
Melting Completion (Liquidus), °C 1420
1470
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 14
2.8
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.8
2.2
Embodied Energy, MJ/kg 40
30
Embodied Water, L/kg 160
51

Common Calculations

PREN (Pitting Resistance) 26
2.1
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
97
Resilience: Unit (Modulus of Resilience), kJ/m3 520
300
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
21
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 18
17

Alloy Composition

Carbon (C), % 0 to 0.030
0.1 to 0.15
Chromium (Cr), % 21.5 to 24.5
0.3 to 0.5
Copper (Cu), % 0.050 to 0.6
0 to 0.3
Iron (Fe), % 65 to 75.4
96.6 to 98.6
Manganese (Mn), % 0 to 2.5
0.4 to 0.7
Molybdenum (Mo), % 0.050 to 0.6
0.4 to 0.6
Nickel (Ni), % 3.0 to 5.5
0 to 0.4
Nitrogen (N), % 0.050 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.45
Sulfur (S), % 0 to 0.030
0 to 0.020
Vanadium (V), % 0
0.22 to 0.3