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EN 1.4438 Stainless Steel vs. S32304 Stainless Steel

Both EN 1.4438 stainless steel and S32304 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4438 stainless steel and the bottom bar is S32304 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 41
28
Fatigue Strength, MPa 220
330
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
79
Shear Strength, MPa 420
440
Tensile Strength: Ultimate (UTS), MPa 620
670
Tensile Strength: Yield (Proof), MPa 250
460

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
440
Maximum Temperature: Mechanical, °C 1000
1050
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 22
14
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.4
2.8
Embodied Energy, MJ/kg 60
40
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 31
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
170
Resilience: Unit (Modulus of Resilience), kJ/m3 150
520
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
24
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 3.7
4.0
Thermal Shock Resistance, points 14
18

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 17.5 to 19.5
21.5 to 24.5
Copper (Cu), % 0
0.050 to 0.6
Iron (Fe), % 57.3 to 66.5
65 to 75.4
Manganese (Mn), % 0 to 2.0
0 to 2.5
Molybdenum (Mo), % 3.0 to 4.0
0.050 to 0.6
Nickel (Ni), % 13 to 16
3.0 to 5.5
Nitrogen (N), % 0 to 0.1
0.050 to 0.2
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030