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EN 1.4640 Stainless Steel vs. S38815 Stainless Steel

Both EN 1.4640 stainless steel and S38815 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 29 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 1.4640 stainless steel and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 200
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 51
34
Fatigue Strength, MPa 230 to 250
230
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
74
Shear Strength, MPa 440 to 460
410
Tensile Strength: Ultimate (UTS), MPa 620 to 650
610
Tensile Strength: Yield (Proof), MPa 240 to 260
290

Thermal Properties

Latent Heat of Fusion, J/g 280
370
Maximum Temperature: Corrosion, °C 420
400
Maximum Temperature: Mechanical, °C 930
860
Melting Completion (Liquidus), °C 1420
1360
Melting Onset (Solidus), °C 1380
1310
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 16
15

Otherwise Unclassified Properties

Base Metal Price, % relative 14
19
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 2.8
3.8
Embodied Energy, MJ/kg 40
54
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 20
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250 to 260
170
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 170
220
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22 to 23
22
Strength to Weight: Bending, points 21
21
Thermal Shock Resistance, points 14 to 15
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0.030 to 0.080
0 to 0.030
Chromium (Cr), % 18 to 19
13 to 15
Copper (Cu), % 1.3 to 2.0
0.75 to 1.5
Iron (Fe), % 67.4 to 73.6
56.1 to 67
Manganese (Mn), % 1.5 to 4.0
0 to 2.0
Molybdenum (Mo), % 0
0.75 to 1.5
Nickel (Ni), % 5.5 to 6.9
13 to 17
Nitrogen (N), % 0.030 to 0.11
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.5
5.5 to 6.5
Sulfur (S), % 0 to 0.015
0 to 0.020