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EN 1.4640 Stainless Steel vs. S15500 Stainless Steel

Both EN 1.4640 stainless steel and S15500 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, 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 S15500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 200
290 to 430
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 51
6.8 to 16
Fatigue Strength, MPa 230 to 250
350 to 650
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 440 to 460
540 to 870
Tensile Strength: Ultimate (UTS), MPa 620 to 650
890 to 1490
Tensile Strength: Yield (Proof), MPa 240 to 260
590 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 420
440
Maximum Temperature: Mechanical, °C 930
820
Melting Completion (Liquidus), °C 1420
1430
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 14
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.7
Embodied Energy, MJ/kg 40
39
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 20
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250 to 260
98 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 170
890 to 4460
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22 to 23
32 to 53
Strength to Weight: Bending, points 21
26 to 37
Thermal Diffusivity, mm2/s 4.0
4.6
Thermal Shock Resistance, points 14 to 15
30 to 50

Alloy Composition

Carbon (C), % 0.030 to 0.080
0 to 0.070
Chromium (Cr), % 18 to 19
14 to 15.5
Copper (Cu), % 1.3 to 2.0
2.5 to 4.5
Iron (Fe), % 67.4 to 73.6
71.9 to 79.9
Manganese (Mn), % 1.5 to 4.0
0 to 1.0
Nickel (Ni), % 5.5 to 6.9
3.5 to 5.5
Niobium (Nb), % 0
0.15 to 0.45
Nitrogen (N), % 0.030 to 0.11
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030