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EN 1.3975 Stainless Steel vs. EN 1.4578 Stainless Steel

Both EN 1.3975 stainless steel and EN 1.4578 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 89% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.3975 stainless steel and the bottom bar is EN 1.4578 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 27
51
Fatigue Strength, MPa 230
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 660
550
Tensile Strength: Yield (Proof), MPa 320
200

Thermal Properties

Latent Heat of Fusion, J/g 340
290
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 910
930
Melting Completion (Liquidus), °C 1360
1430
Melting Onset (Solidus), °C 1320
1390
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 15
19
Density, g/cm3 7.5
7.9
Embodied Carbon, kg CO2/kg material 3.3
3.7
Embodied Energy, MJ/kg 47
51
Embodied Water, L/kg 150
160

Common Calculations

PREN (Pitting Resistance) 21
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
220
Resilience: Unit (Modulus of Resilience), kJ/m3 270
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 24
19
Strength to Weight: Bending, points 22
19
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.040
Chromium (Cr), % 16 to 18
16.5 to 17.5
Copper (Cu), % 0
3.0 to 3.5
Iron (Fe), % 58.2 to 65.4
62.3 to 68.5
Manganese (Mn), % 7.0 to 9.0
0 to 2.0
Molybdenum (Mo), % 0 to 1.0
2.0 to 2.5
Nickel (Ni), % 8.0 to 9.0
10 to 11
Nitrogen (N), % 0.080 to 0.18
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 3.5 to 4.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015